LES over RANS in building simulation for outdoor and indoor applications: A foregone conclusion?

Large Eddy Simulation (LES) undeniably has the potential to provide more accurate and more reliable results than simulations based on the Reynolds-averaged Navier-Stokes (RANS) approach. However, LES entails a higher simulation complexity and a much higher computational cost. In spite of some claims made in the past decades that LES would render RANS obsolete, RANS remains widely used in both research and engineering practice. This paper attempts to answer the questions why this is the case and whether this is justified, from the viewpoint of building simulation, both for outdoor and indoor applications. First, the governing equations and a brief overview of the history of LES and RANS are presented. Next, relevant highlights from some previous position papers on LES versus RANS are provided. Given their importance, the availability or unavailability of best practice guidelines is outlined. Subsequently, why RANS is still frequently used and whether this is justified or not is illustrated by examples for five application areas in building simulation: pedestrian-level wind comfort, near-field pollutant dispersion, urban thermal environment, natural ventilation of buildings and indoor airflow. It is shown that the answers vary depending on the application area but also depending on other—less obvious—parameters such as the building configuration under study. Finally, a discussion and conclusions including perspectives on the future of LES and RANS in building simulation are provided.

[1]  Hsin Yu,et al.  Scale model study of airflow performance in a ceiling slot-ventilated enclosure: isothermal condition , 2003 .

[2]  H Hamid Montazeri,et al.  CFD evaluation of new second-skin facade concept for wind comfort on building balconies : case-study for the Park Tower in Antwerp , 2013 .

[3]  Takashi Kurabuchi,et al.  Numerical Study of Cross-Ventilation Using Two-Equation RANS , 2005 .

[4]  Yoshihide Tominaga,et al.  Comparison of various k-ε models and DSM applied to flow around a high-rise building - report on AIJ cooperative project for CFD prediction of wind environment - , 2002 .

[5]  Ming Gu,et al.  CFD simulation of snow transport over flat, uniformly rough, open terrain: Impact of physical and computational parameters , 2018, Journal of Wind Engineering and Industrial Aerodynamics.

[6]  R. Tovar,et al.  Flow generated by a thermal plume in a cooled-ceiling system , 2011 .

[7]  F. Livesey,et al.  A scour technique for the evaluation of pedestrian winds , 1990 .

[8]  Robert N. Meroney,et al.  Gas dispersion near a cubical model building. Part II. Concentration fluctuation measurements , 1983 .

[9]  Hamid Montazeri,et al.  CFD simulation and validation of urban microclimate: A case study for Bergpolder Zuid, Rotterdam , 2015 .

[10]  Theodore Stathopoulos,et al.  Design and fabrication of a wind tunnel for building aerodynamics , 1984 .

[11]  Chia-Ren Chu,et al.  Wind-driven cross ventilation with internal obstacles , 2013 .

[12]  Paul G. Tucker,et al.  Introduction to grid and mesh generation for CFD , 2001 .

[13]  Bje Bert Blocken,et al.  CFD simulation of cross-ventilation for a generic isolated building : impact of computational parameters , 2012 .

[14]  Tetsuro Tamura,et al.  LES of turbulent wind and gas dispersion in a city , 2012 .

[15]  Guoqiang Zhang,et al.  Scale model experiments to determine the effects of internal airflow and floor design on gaseous emissions from animal houses , 2008 .

[16]  Riccardo Buccolieri,et al.  The impact of trees on street ventilation, NOx and PM2.5 concentrations across heights in Marylebone Rd street canyon, central London , 2018, Sustainable Cities and Society.

[17]  P. Spalart.  A One-Equation Turbulence Model for Aerodynamic Flows , 1992 .

[18]  R. M. Reynolds,et al.  Detailed Simulations of Atmospheric Flow and Dispersion in Downtown Manhattan: An Application of Five Computational Fluid Dynamics Models , 2006 .

[19]  N. J. Cook,et al.  A boundary layer wind tunnel for building aerodynamics , 1975 .

[20]  H. Timmermans,et al.  CFD analysis of transpirational cooling by vegetation: Case study for specific meteorological conditions during a heat wave in Arnhem, Netherlands , 2015 .

[21]  Jay P. Boris,et al.  Large Scale Urban Contaminant Transport Simulations With Miles , 2007 .

[22]  Peter V. Nielsen,et al.  Evaluation of methods for determining air exchange rate in a naturally ventilated dairy cattle building with large openings using computational fluid dynamics (CFD) , 2012 .

[23]  D. Lilly,et al.  A proposed modification of the Germano subgrid‐scale closure method , 1992 .

[24]  Shuzo Murakami,et al.  Amplification of wind speed at ground level due to construction of high-rise building in urban area , 1979 .

[25]  Geoffrey P. Hammond,et al.  ‘APPROPRIATE’ CALCULATION METHODS FOR CONVECTIVE HEAT TRANSFER FROM BUILDING SURFACES. , 1984 .

[26]  Bert Blocken,et al.  Wind tunnel analysis of flow and dispersion in cross-ventilated isolated buildings: Impact of opening positions , 2016 .

[27]  Yasushi Uematsu,et al.  Effects of the corner shape of high-rise buildings on the pedestrian-level wind environment with consideration for mean and fluctuating wind speeds , 1992 .

[28]  Peter Richards,et al.  Pedestrian level wind speeds in downtown Auckland , 2002 .

[29]  Lewis F. Richardson,et al.  Weather Prediction by Numerical Process , 1922 .

[30]  George H. Fichtl,et al.  A boundary-layer analysis of atmospheric motion over a semi-elliptical surface obstruction , 1974 .

[31]  Kit Ming Lam,et al.  Evaluation of pedestrian-level wind environment around a row of tall buildings using a quartile-level wind speed descripter , 1995 .

[32]  Caskey,et al.  GENERAL CIRCULATION EXPERIMENTS WITH THE PRIMITIVE EQUATIONS I . THE BASIC EXPERIMENT , 1962 .

[33]  Jianming He,et al.  Evaluation of pedestrian winds in urban area by numerical approach , 1999 .

[34]  Peter V. Nielsen,et al.  Flow in Air Conditioned Rooms , 1974 .

[35]  Ryuichiro Yoshie,et al.  CFD modelling of unsteady cross ventilation flows using LES , 2008 .

[36]  Bert Blocken,et al.  Influence of avenue-trees on air quality at the urban neighborhood scale. Part II: traffic pollutant concentrations at pedestrian level. , 2015, Environmental pollution.

[37]  Bert Blocken,et al.  CFD evaluation of wind speed conditions in passages between parallel buildings : effect of wall-function roughness modifications for the atmospheric boundary layer flow , 2007 .

[38]  Theodore Stathopoulos,et al.  Numerical simulation of pollutant dispersion around a building complex , 2010 .

[39]  Michael A. Leschziner,et al.  Modelling engineering flows with Reynolds stress turbulence closure , 1990 .

[40]  Theodore Stathopoulos,et al.  Computational evaluation of wind effects on buildings , 1989 .

[41]  Michael Schatzmann,et al.  Some remarks on the validation of small-scale dispersion models with field and laboratory data , 1997 .

[42]  An-Shik Yang,et al.  Optimization procedures for enhancement of city breathability using arcade design in a realistic high-rise urban area , 2017 .

[43]  Peter V. Nielsen,et al.  Moisture Transfer in Air Conditioned Rooms and Cold Stores , 1974 .

[44]  Yong Xu,et al.  Large-eddy simulations of pedestrian-level ventilation for assessing a satellite-based approach to urban geometry generation , 2017, Graph. Model..

[45]  Peter V. Nielsen,et al.  The Velocity Characteristics of Ventilated Rooms , 1978 .

[46]  W. Snow,et al.  Ventilation of buildings , 1906 .

[47]  J. W. Verkaik.  On Wind and Roughness over Land , 2006 .

[48]  Michael Schatzmann,et al.  Wind-tunnel and numerical modeling of flow and dispersion about several building shapes , 1999 .

[49]  C. Baker.  Wind engineering—Past, present and future , 2007 .

[50]  Yusuf Cihat Aydin,et al.  Wind-driven ventilation improvement with plan typology alteration: A CFD case study of traditional Turkish architecture , 2017 .

[51]  Bje Bert Blocken,et al.  Pedestrian-level wind conditions around buildings: Review of wind-tunnel and CFD techniques and their accuracy for wind comfort assessment , 2016 .

[52]  Patrick Rambaud,et al.  CFD modelling of small particle dispersion: The influence of the turbulence kinetic energy in the atmospheric boundary layer , 2009 .

[53]  B. Blocken,et al.  Large-Eddy Simulation of pollutant dispersion around a cubical building: analysis of the turbulent mass transport mechanism by unsteady concentration and velocity statistics. , 2012, Environmental pollution.

[54]  Andrea Freda,et al.  Wind tunnel measurements of the urban boundary layer development over a historical district in Italy , 2017 .

[55]  Stephan Hachinger,et al.  CFD simulation of CO2 dispersion from urban thermal power plant: Analysis of turbulent Schmidt number and comparison with Gaussian plume model and measurements , 2017 .

[56]  Tetsuro Tamura,et al.  AIJ guide for numerical prediction of wind loads on buildings , 2006 .

[57]  P. Monks,et al.  Ranking current and prospective NO2 pollution mitigation strategies: An environmental and economic modelling investigation in Oxford Street, London. , 2017, Environmental pollution.

[58]  Paul Linden,et al.  Validity of thermally-driven small-scale ventilated filling box models , 2013 .

[59]  Yasunobu Ashie,et al.  Urban‐scale CFD analysis in support of a climate‐sensitive design for the Tokyo Bay area , 2011 .

[60]  L F Richardson,et al.  A Freehand Graphic way of determining Stream Lines and Equipotentials , 1907 .

[61]  David Hamlyn,et al.  City breathability as quantified by the exchange velocity and its spatial variation in real inhomogeneous urban geometries: an example from central London urban area. , 2013, The Science of the total environment.

[62]  Marina K.-A. Neophytou,et al.  Air flow and pollution in a real, heterogeneous urban street canyon: A field and laboratory study , 2017 .

[63]  A. D. Gosman,et al.  Developments in CFD for industrial and environmental applications in wind engineering , 1999 .

[64]  J. Deardorff.  Numerical Investigation of Neutral and Unstable Planetary Boundary Layers , 1972 .

[65]  J. Deardorff,et al.  A three‐dimensional numerical investigation of the idealized planetary boundary layer , 1970 .

[66]  Christopher J. Roy,et al.  A Complete Framework for Verification, Validation, and Uncertainty Quantification in Scientific Computing (Invited) , 2010 .

[67]  Y. Matsuo,et al.  Numerical predictions of three-dimensional flow in a ventilated room using turbulence models , 1980 .

[68]  Pietro Salizzoni,et al.  Street canyon ventilation and atmospheric turbulence , 2009 .

[69]  Frank Baetke,et al.  Numerical simulation of turbulent flow over surface-mounted obstacles with sharp edges and corners , 1990 .

[70]  Yoshihiko Hayashi,et al.  Numerical study on velocity-pressure field and wind forces for bluff bodies by κ-ϵ, ASM and LES , 1992 .

[71]  J. Fung,et al.  Sensitivity of inflow boundary conditions on downstream wind and turbulence profiles through building obstacles using a CFD approach , 2013 .

[72]  Yoshihide Tominaga,et al.  Turbulent Schmidt numbers for CFD analysis with various types of flowfield , 2007 .

[73]  I P Castro,et al.  NUMERICAL WIND ENGINEERING: THE WAY AHEAD ? , 1999 .

[74]  A. Leonard.  Energy Cascade in Large-Eddy Simulations of Turbulent Fluid Flows , 1975 .

[75]  Alexis K.H. Lau,et al.  Air ventilation impacts of the "wall effect" resulting from the alignment of high-rise buildings , 2009 .

[76]  Guixiang Cui,et al.  Study on micro-atmospheric environment by coupling large eddy simulation with mesoscale model , 2012 .

[77]  D. Etheridge.  Natural Ventilation of Buildings Theory Measurement and Design , 2011 .

[78]  Ferdinand Baer,et al.  Numerical weather prediction , 2000, Adv. Comput..

[79]  Y. Toparlar,et al.  Simulating the cooling effects of water spray systems in urban landscapes: A computational fluid dynamics study in Rotterdam, The Netherlands , 2017 .

[80]  S. Takakura,et al.  Numerical Simulation of Flowfield around Buildings in an Urban Area , 1993 .

[81]  Joel H. Ferziger,et al.  Simulation of complex turbulent flows: recent advances and prospects in wind engineering , 1993 .

[82]  Yoshihide Tominaga,et al.  On the accuracy of CFD simulations of cross-ventilation flows for a generic isolated building: Comparison of RANS, LES and experiments , 2017 .

[83]  Zhiqiang John Zhai,et al.  Evaluation of Various Turbulence Models in Predicting Airflow and Turbulence in Enclosed Environments by CFD: Part 2—Comparison with Experimental Data from Literature , 2007 .

[84]  Pierre Sagaut,et al.  Wind comfort assessment by means of large eddy simulation with lattice Boltzmann method in full scale city area , 2018, Building and Environment.

[85]  Peter V. Nielsen,et al.  CFD and ventilation research. , 2011, Indoor air.

[86]  Atila Novoselac,et al.  Lagrangian particle modeling in the indoor environment: A comparison of RANS and LES turbulence methods (RP-1512) , 2014 .

[87]  T. Shih,et al.  A new k-ϵ eddy viscosity model for high reynolds number turbulent flows , 1995 .

[88]  Bje Bert Blocken,et al.  Pedestrian wind comfort around a large football stadium in an urban environment: CFD simulation, validation and application of the new Dutch wind nuisance standard , 2009 .

[89]  K. Ghia,et al.  Editorial Policy Statement on the Control of Numerical Accuracy , 1986 .

[90]  Theodore Stathopoulos,et al.  Effect of stack height and exhaust velocity on pollutant dispersion in the wake of a building , 2011 .

[91]  Per Heiselberg,et al.  Ventilation of Large Spaces in Buildings , 1998 .

[92]  A. Robins,et al.  A wind tunnel investigation of plume dispersion in the vicinity of a surface mounted cube—II. The concentration field , 1977 .

[93]  Nuno R. Martins,et al.  Validation of numerical simulation tools for wind-driven natural ventilation design , 2016 .

[94]  Guixiang Cui,et al.  Large eddy simulation of wind field and pollutant dispersion in downtown Macao , 2011 .

[95]  David Surry,et al.  Pressure measurements on the Texas tech building: Wind tunnel measurements and comparisons with full scale , 1991 .

[96]  S. Orszag,et al.  Renormalization group analysis of turbulence. I. Basic theory , 1986 .

[97]  Zhang Hao,et al.  CFD simulations of wind distribution in an urban community with a full-scale geometrical model , 2017 .

[98]  J. Carmeliet,et al.  PIV measurements of a plane wall jet in a confined space at transitional slot Reynolds numbers , 2012 .

[99]  P. Moin,et al.  A dynamic subgrid‐scale eddy viscosity model , 1990 .

[100]  Theodore Stathopoulos,et al.  The numerical wind tunnel for industrial aerodynamics: Real or virtual in the new millennium? , 2002 .

[101]  M. J. Holmes,et al.  How accurate are the predictions of complex air movement models? , 1987 .

[102]  Yoshihide Tominaga,et al.  Steady and unsteady RANS simulations of pollutant dispersion around isolated cubical buildings: Effect of large-scale fluctuations on the concentration field , 2017 .

[103]  W. Jones,et al.  The prediction of laminarization with a two-equation model of turbulence , 1972 .

[104]  Yoshihiko Hayashi,et al.  Examining the κ-ϵ model by means of a wind tunnel test and large-eddy simulation of the turbulence structure around a cube , 1990 .

[105]  Bert Blocken,et al.  Wind tunnel experiments on cross-ventilation flow of a generic building with contaminant dispersion in unsheltered and sheltered conditions , 2015 .

[106]  B. Maiheu,et al.  The effect of an urban park on the microclimate in its vicinity: a case study for Antwerp, Belgium , 2018 .

[107]  C. J. Apelt,et al.  Simulation of flow past a cube in a turbulent boundary layer , 1990 .

[108]  M. Sandberg,et al.  Building Ventilation: Theory and Measurement , 1996 .

[109]  Bje Bert Blocken,et al.  On the effect of wind direction and urban surroundings on natural ventilation of a large semi-enclosed stadium , 2010 .

[110]  Maya Milliez,et al.  High resolution unsteady RANS simulation of wind, thermal effects and pollution dispersion for studying urban renewal scenarios in a neighborhood of Toulouse , 2018 .

[111]  S. Murakami,et al.  COMPARISON OF VARIOUS TURBULENCE MODELS APPLIED TO A BLUFF BODY , 1993 .

[112]  Rex Britter,et al.  Velocity measurements and order of magnitude estimates of the flow between two buildings in a simulated atmospheric boundary layer , 1979 .

[113]  Zhao Zhang,et al.  Evaluation of Various Turbulence Models in Predicting Airflow and 1 Turbulence in Enclosed Environments by CFD : Part-1 : 2 Summary of Prevalent Turbulence Models 3 4 , 2007 .

[114]  G. Van Tendeloo,et al.  Quantifying inflow uncertainties in RANS simulations of urban pollutant dispersion , 2017 .

[115]  D. Grawe,et al.  BEST PRACTICE GUIDELINE FOR THE CFD SIMULATION OF FLOWS IN THE URBAN ENVIRONMENT , 2007 .

[116]  Theodore Stathopoulos,et al.  Influence of computational parameters on the evaluation of wind effects on the building envelope , 1992 .

[117]  J. Smagorinsky,et al.  GENERAL CIRCULATION EXPERIMENTS WITH THE PRIMITIVE EQUATIONS , 1963 .

[118]  Theodore Stathopoulos,et al.  Boundary treatment for the computation of three-dimensional wind flow conditions around a building , 1990 .

[119]  William L. Oberkampf,et al.  Guide for the verification and validation of computational fluid dynamics simulations , 1998 .

[120]  J. Deardorff.  Convective Velocity and Temperature Scales for the Unstable Planetary Boundary Layer and for Rayleigh Convection , 1970 .

[121]  Theodore Stathopoulos,et al.  Computational wind engineering: Past achievements and future challenges , 1997 .

[122]  Michael Schatzmann,et al.  Issues with validation of urban flow and dispersion CFD models , 2011 .

[123]  Yoshihiko Hayashi,et al.  Numerical simulation of velocity field and diffusion field in an urban area , 1990 .

[124]  Jan Carmeliet,et al.  Modification of pedestrian wind comfort in the Silvertop Tower passages by an automatic control system , 2004 .

[125]  Denis Flick,et al.  Airflow patterns in a slot-ventilated enclosure partially loaded with empty slotted boxes , 2007 .

[126]  Theodore Stathopoulos,et al.  Further experiments on Irwin's surface wind sensor , 1994 .

[127]  Theodore Stathopoulos,et al.  A numerical study on the existence of the Venturi-effect in passages between perpendicular buildings , 2008 .

[128]  Donal Finn,et al.  Sensitivity of air change rates in a naturally ventilated atrium space subject to variations in external wind speed and direction , 2008 .

[129]  Bje Bert Blocken,et al.  PIV measurements of isothermal plane turbulent impinging jets at moderate Reynolds numbers , 2017 .

[130]  Robert N. Meroney,et al.  Gas dispersion near a cubical model building. Part I. Mean concentration measurements , 1983 .

[131]  Joel H. Ferziger,et al.  A fluid mechanicians view of wind engineering: Large eddy simulation of flow past a cubic obstacle , 1997 .

[132]  Bert Blocken,et al.  Coupled urban wind flow and indoor natural ventilation modelling on a high-resolution grid: A case study for the Amsterdam ArenA stadium , 2010, Environ. Model. Softw..

[133]  A. Chan,et al.  Large-Eddy Simulations on Indoor/Outdoor Air Quality Relationship in an Isolated Urban Building , 2007 .

[134]  Peter Richards,et al.  Appropriate boundary conditions for computational wind engineering models revisited , 2011 .

[135]  A. Kolmogorov,et al.  The local structure of turbulence in incompressible viscous fluid for very large Reynolds numbers , 1991, Proceedings of the Royal Society of London. Series A: Mathematical and Physical Sciences.

[136]  H.P.A.H. Irwin,et al.  A simple omnidirectional sensor for wind-tunnel studies of pedestrian-level winds , 1981 .

[137]  A Gadilhe,et al.  Numerical and experimental modelling of the three-dimensional turbulent wind flow through an urban square , 1993 .

[138]  L. Richardson,et al.  Atmospheric Diffusion Shown on a Distance-Neighbour Graph , 1926 .

[139]  Sumio Kawamura,et al.  Environmental wind characteristics around the base of a tall building - a comparison between model test and full scale experiment - , 1988 .

[140]  A. Mochida,et al.  Methods for controlling airflow in and around a building under cross-ventilation to improve indoor thermal comfort , 2005 .

[141]  S. Murakami,et al.  Three-dimensional numerical simulation of air flow around a cubic model by means of large eddy simulation , 1987 .

[142]  Shuzo Murakami,et al.  Current status and future trends in computational wind engineering , 1997 .

[143]  Paul Linden,et al.  Contaminants in ventilated filling boxes , 2007, Journal of Fluid Mechanics.

[144]  Theodore Stathopoulos,et al.  Numerical evaluation of pollutant dispersion in the built environment: comparisons between models and experiments , 2008 .

[145]  Shuzo Murakami,et al.  3-D numerical simulation of airflow around a cubic model by means of the k-ϵ model , 1988 .

[146]  Bjarne W. Olesen,et al.  Ventilation and indoor environmental quality , 2007 .

[147]  Bje Bert Blocken,et al.  CFD evaluation of natural ventilation of indoor environments by the concentration decay method: CO2 gas dispersion from a semi-enclosed stadium , 2013 .

[148]  J. Deardorff,et al.  Preliminary Results from Numerical Integrations of the Unstable Planetary Boundary Layer , 1970 .

[149]  M. Boussinesq.  Essai sur la théorie des eaux courantes , 1873 .

[150]  Theodore Stathopoulos,et al.  Numerical simulation of wind-induced pressures on buildings of various geometries , 1993 .

[151]  Michael Schatzmann,et al.  MODEL EVALUATION GUIDANCE AND PROTOCOL DOCUMENT , 2007 .

[152]  Jiyuan Tu,et al.  Numerical studies of indoor airflow and particle dispersion by large Eddy simulation , 2007 .

[153]  B. Blocken,et al.  CFD simulation of pollutant dispersion around isolated buildings: on the role of convective and turbulent mass fluxes in the prediction accuracy. , 2011, Journal of hazardous materials.

[154]  J.,et al.  Numerical Integration of the Barotropic Vorticity Equation , 1950 .

[155]  P. Roache.  Perspective: A Method for Uniform Reporting of Grid Refinement Studies , 1994 .

[156]  Jonas Allegrini,et al.  Wind sheltering effect of a small railway station shelter and its impact on wind comfort for passengers , 2017 .

[157]  Qingyan Chen,et al.  Effect of fluctuating wind direction on cross natural ventilation in buildings from large eddy simulation , 2002 .

[158]  R. Selvam.  Computation of pressures on Texas Tech University building using large eddy simulation , 1997 .

[159]  Michael Schatzmann,et al.  Flue gas discharge from cooling towers. Wind tunnel investigation of building downwash effects on ground-level concentrations , 1987 .

[160]  Bje Bert Blocken,et al.  Computational Fluid Dynamics for urban physics: Importance, scales, possibilities, limitations and ten tips and tricks towards accurate and reliable simulations , 2015 .

[161]  Ryozo Ooka,et al.  CFD analysis of wind climate from human scale to urban scale , 1999 .

[162]  P. Nielsen,et al.  The Selection of Turbulence Models for Prediction of Room Airflow , 1998 .

[163]  Qingyan Chen,et al.  Prediction of room air motion by Reynolds-stress models , 1996 .

[164]  Nielsen Pv,et al.  [Computation of air movement in a pressure-ventilated room]. , 1973 .

[165]  Peter Richards,et al.  Computational and wind tunnel modelling of mean wind loads on the Silsoe structures building , 1992 .

[166]  Robert N. Meroney,et al.  Ten questions concerning hybrid computational/physical model simulation of wind flow in the built environment , 2016 .

[167]  J. Allegrini,et al.  Simulations of local heat islands in Zürich with coupled CFD and building energy models , 2017, Urban Climate.

[168]  Bert Blocken,et al.  Ten iterative steps for model development and evaluation applied to Computational Fluid Dynamics for Environmental Fluid Mechanics , 2012, Environ. Model. Softw..

[169]  G. Evola,et al.  Computational analysis of wind driven natural ventilation in buildings , 2006 .

[170]  Qingyan Chen,et al.  Influence of surrounding buildings on wind flow around a building predicted by CFD simulations , 2018, Building and Environment.

[171]  Theodore Stathopoulos,et al.  Application of computational fluid dynamics in building performance simulation for the outdoor environment: an overview , 2011 .

[172]  F. Menter.  Eddy Viscosity Transport Equations and Their Relation to the k-ε Model , 1997 .

[173]  Bert Blocken,et al.  50 years of Computational Wind Engineering: Past, present and future , 2014 .

[174]  Bje Bert Blocken,et al.  Pedestrian wind comfort around buildings : comparison of wind comfort criteria based on whole-flow field data for a complex case study , 2013 .

[175]  Qingyan Chen,et al.  Comparing Turbulence Models for Buoyant Plume and Displacement Ventilation Simulation , 1997 .

[176]  Takeshi Ohkuma,et al.  Numerical prediction of wind loading on buildings and structures : Activities of AIJ cooperative project on CFD , 1997 .

[177]  Bje Bert Blocken,et al.  CFD simulation of cross-ventilation flow for different isolated building configurations: validation with wind tunnel measurements and analysis of physical and numerical diffusion effects , 2012 .

[178]  Nicolas G. Wright,et al.  Development and validation of a non-linear k-ε model for flow over a full-scale building , 2001 .

[179]  C. J. Apelt,et al.  Computation of wind flows over three-dimensional buildings , 1986 .

[180]  Gary R. Hunt,et al.  The fluid mechanics of natural ventilation—displacement ventilation by buoyancy-driven flows assisted by wind , 1999 .

[181]  Douglas K. Li ly.  Numerical Solutions for the Shape-Preserving Two-Dimensional Thermal Convection Element. , 1964 .

[182]  Richard D. Marshall,et al.  On the wind-tunnel simulation of the atmospheric surface layer for the study of wind loads on low-rise buildings , 1978 .

[183]  Shuzo Murakami,et al.  Numerical and experimental study on room airflow—3-D predictions using the k-ϵ turbulence model , 1989 .

[184]  Marko Princevac,et al.  Scaling of building affected plume rise and dispersion in water channels and wind tunnels—Revisit of an old problem , 2012 .

[185]  Andreas K. Athienitis,et al.  Airflow assessment in cross-ventilated buildings with operable façade elements , 2011 .

[186]  Hiroshi Yoshino,et al.  Total analysis of cooling effects of cross-ventilation affected by microclimate around a building , 2006 .

[187]  K. McKee.  Book Reviews : Wind Effects On Structures: E. Simiu and R.H. Scanlan John Wiley & Sons, New York, New York 1980, $33.50 , 1981 .

[188]  Y. Tominaga,et al.  Numerical simulation of dispersion around an isolated cubic building: Model evaluation of RANS and LES , 2010 .

[189]  Lisette Klok,et al.  The surface heat island of Rotterdam and its relationship with urban surface characteristics , 2012 .

[190]  D. M. Summers,et al.  Validation of a computer simulation of wind flow over a building model , 1986 .

[191]  Tadahisa Katayama,et al.  Full-scale measurements and wind tunnel tests on cross-ventilation , 1992 .

[192]  Dubravka Vasilic-Melling,et al.  Three-dimensional turbulent flow past rectangular bluff bodies , 1977 .

[193]  Jan Carmeliet,et al.  Pedestrian wind conditions at outdoor platforms in a high-rise apartment building: generic sub-configuration validation, wind comfort assessment and uncertainty issues , 2008 .

[194]  Cheuk Ming Mak,et al.  Modelling of pedestrian level wind environment on a high-quality mesh: A case study for the HKPolyU campus , 2018, Environ. Model. Softw..

[195]  Kenny C. S Kwok,et al.  Wind tunnel study of pedestrian level wind environment around tall buildings: Effects of building dimensions, separation and podium , 2012 .

[196]  J. Anderson,et al.  Computational fluid dynamics : the basics with applications , 1995 .

[197]  A. Z. Dhunny,et al.  Investigation of multi-level wind flow characteristics and pedestrian comfort in a tropical city , 2018, Urban Climate.

[198]  J. C. R. Hunt,et al.  LEWIS FRY RICHARDSON AND HIS CONTRIBUTIONS TO MATHEMATICS, METEOROLOGY, AND MODELS OF CONFLICT , 1998 .

[199]  Simon J. Rees,et al.  Large-eddy simulation of buoyancy-driven natural ventilation in an enclosure with a point heat source , 2007 .

[200]  David A. Smeed,et al.  Emptying filling boxes: the fluid mechanics of natural ventilation , 1990, Journal of Fluid Mechanics.

[201]  J Wilson,et al.  Best Practice Guidelines , 2020, Restorative Justice for Survivors of Sexual Abuse.

[202]  Da-Wen Sun,et al.  Assessing the ventilation effectiveness of naturally ventilated livestock buildings under wind dominated conditions using computational fluid dynamics , 2009 .

[203]  K. Pericleous,et al.  Laminar and turbulent natural convection in an enclosed cavity , 1984 .

[204]  T. Stathopoulos,et al.  Computer simulation of wind environmental conditions around buildings , 1996 .

[205]  Bert Blocken,et al.  CFD simulation for pedestrian wind comfort and wind safety in urban areas: General decision framework and case study for the Eindhoven University campus , 2012, Environ. Model. Softw..

[206]  Reginald Storms,et al.  Wind environmental conditions in passages between buildings , 1986 .

[207]  Bje Bert Blocken,et al.  Quality assessment of Large-Eddy Simulation of wind flow around a high-rise building : validation and solution verification , 2013 .

[208]  Shuzo Murakami,et al.  Overview of turbulence models applied in CWE–1997 , 1998 .

[209]  Peter V. Nielsen,et al.  Computational fluid dynamics in ventilation design , 2007 .

[210]  Rex Britter,et al.  Simulations of pollutant dispersion within idealised urban-type geometries with CFD and integral models , 2007 .

[211]  Julia E. Flaherty,et al.  Computational Fluid Dynamic Simulations of Plume Dispersion in Urban Oklahoma City , 2007 .

[212]  Sandrine Aubrun,et al.  Sand erosion technique applied to wind resource assessment , 2012 .

[213]  Shuzo Murakami,et al.  Numerical Simulation of flowfield around Texas Tech Building by Large Eddy Simulation , 1993 .

[214]  P. Linden.  THE FLUID MECHANICS OF NATURAL VENTILATION , 1999 .

[215]  S. Murakami,et al.  Comparison of various revised k–ε models and LES applied to flow around a high-rise building model with 1:1:2 shape placed within the surface boundary layer , 2008 .

[216]  Yoshihide Tominaga,et al.  CFD simulations of the effect of evaporative cooling from water bodies in a micro-scale urban environment: Validation and application studies , 2015 .

[217]  W. J. Beranek,et al.  Visual techniques for the determination of wind environment , 1979 .

[218]  N. Sudhakaran,et al.  Best practice guidelines: fetal surgery. , 2012, Early human development.

[219]  Michael A. Leschziner,et al.  Computational modelling of complex turbulent flow -expectations, reality and prospects , 1993 .

[220]  J. S. Turner,et al.  QUANTIFICATION OF UNCERTAINTY IN COMPUTATIONAL FLUID DYNAMICS , 2006 .

[221]  Jong-Jin Baik,et al.  Urban Flow and Dispersion Simulation Using a CFD Model Coupled to a Mesoscale Model , 2009 .

[222]  O. Reynolds.  On the dynamical theory of incompressible viscous fluids and the determination of the criterion , 1995, Proceedings of the Royal Society of London. Series A: Mathematical and Physical Sciences.

[223]  Girma Bitsuamlak,et al.  Pedestrian level wind assessment through city development: A study of the financial district in Toronto , 2017 .

[224]  Jörg Franke,et al.  The COST 732 Best Practice Guideline for CFD simulation of flows in the urban environment: a summary , 2011 .

[225]  Theodore Stathopoulos,et al.  Application of infrared thermography for pedestrian wind evaluation , 1997 .

[226]  Florian R. Menter,et al.  CFD Best Practice Guidelines for CFD Code Validation for Reactor- Safety Applications , 2002 .

[227]  Bje Bert Blocken,et al.  A review on the CFD analysis of urban microclimate , 2017 .

[228]  C. Wen,et al.  Numerical simulation of cooling effect of vegetation enhancement in a subtropical urban park , 2017 .

[229]  Theodore Stathopoulos,et al.  Numerical evaluation of wind-induced dispersion of pollutants around a building , 1997 .

[230]  W. Rodi.  Comparison of LES and RANS calculations of the flow around bluff bodies , 1997 .

[231]  Edward Ng,et al.  Evaluation of satellite-derived building height extraction by CFD simulations: A case study of neighborhood-scale ventilation in Hong Kong , 2018 .

[232]  S. M. Fraser,et al.  Numerical and experimental analysis of flow around isolated and shielded cubes , 1990 .

[233]  Bje Bert Blocken,et al.  Reduction of outdoor particulate matter concentrations by local removal in semi-enclosed parking garages: a preliminary case study for Eindhoven city center , 2016 .

[234]  Bert Blocken,et al.  Near-field pollutant dispersion in an actual urban area: Analysis of the mass transport mechanism by high-resolution Large Eddy Simulations , 2015 .

[235]  Qingyan Chen,et al.  Large eddy simulation of indoor airflow with a filtered dynamic subgrid scale model , 2000 .

[236]  Yoshihide Tominaga,et al.  Cooperative project for CFD prediction of pedestrian wind environment in the Architectural Institute of Japan , 2007 .

[237]  Hazim B. Awbi,et al.  Application of computational fluid dynamics in room ventilation , 1989 .

[238]  A. D. Gosman,et al.  The Flow Properties of Rooms With Small Ventilation Openings , 1980 .

[239]  Kenji Shimada,et al.  Use of large eddy simulation to measure fluctuating pressure fields around buildings with wall openings , 1993 .

[240]  David Hargreaves,et al.  Unsteady CFD Simulations for Natural Ventilation , 2006 .

[241]  Wei Chen,et al.  Large Eddy Simulation of Natural and Mixed Convection Airflow Indoors with Two Simple Filtered Dynamic Subgrid Scale Models , 2000 .

[242]  Kemal Hanjalic.  Will RANS Survive LES? A View of Perspectives , 2004 .

[243]  Joel H. Ferziger,et al.  APPROACHES TO TURBULENT FLOW COMPUTATION - APPLICATIONS TO FLOW OVER OBSTACLES , 1990 .

[244]  Sophie Papst,et al.  Computational Methods For Fluid Dynamics , 2016 .

[245]  Qingyan Chen,et al.  Natural Ventilation in Buildings: Measurement in a Wind Tunnel and Numerical Simulation with Large Eddy Simulation , 2003 .

[246]  W. Tollmien,et al.  Über Flüssigkeitsbewegung bei sehr kleiner Reibung , 1961 .

[247]  Chao-Hsin Lin,et al.  Advanced turbulence models for predicting particle transport in enclosed environments , 2012 .

[248]  Edward Ng,et al.  Practical application of CFD on environmentally sensitive architectural design at high density cities: A case study in Hong Kong , 2013, Urban Climate.

[249]  Akashi Mochida,et al.  Prediction of wind environment and thermal comfort at pedestrian level in urban area , 2006 .

[250]  Anthony J. Jakeman,et al.  Ten iterative steps in development and evaluation of environmental models , 2006, Environ. Model. Softw..

[251]  T. Stathopoulos,et al.  CFD simulation of the atmospheric boundary layer: wall function problems , 2007 .

[252]  P. Nielsen,et al.  Buoyancy-Affected Flows In Ventilated Rooms , 1979 .

[253]  T. Chang,et al.  Numerical Study of the Effect of Ventilation Pattern on Coarse, Fine, and Very Fine Particulate Matter Removal in Partitioned Indoor Environment , 2007, Journal of the Air & Waste Management Association.

[254]  J. G. Bartzis,et al.  CFD-RANS prediction of the dispersion of a hazardous airborne material released during a real accident in an industrial environment , 2017 .

[255]  Jianming He,et al.  Computation of Wind Flow around a Tall Building and the Large–Scale Vortex Structure , 1993 .

[256]  Soo-Jin Park,et al.  Development of a computational fluid dynamics model with tree drag parameterizations: Application to pedestrian wind comfort in an urban area , 2017 .

[257]  U. Renz,et al.  Calculations of the temperature and flow field in a room ventilated by a radial air distributor , 1984 .

[258]  Stephen B. Pope,et al.  A PERSPECTIVE ON TURBULENCE MODELING , 1999 .

[259]  G.Th. Visser,et al.  Wind comfort predictions by wind tunnel tests: comparison with full-scale data , 1994 .

[260]  P V Nielsen,et al.  Computational fluid dynamics and room air movement. , 2004, Indoor air.

[261]  William H. Snyder,et al.  Wind tunnel investigation of the effects of a rectangular-shaped building on dispersion of effluents from short adjacent stacks , 1982 .

[262]  A.L.S. Chan,et al.  Pedestrian level wind environment assessment around group of high-rise cross-shaped buildings: Effect of building shape, separation and orientation , 2016, Building and Environment.

[263]  Y. Tominaga.  Flow around a high-rise building using steady and unsteady RANS CFD: Effect of large-scale fluctuations on the velocity statistics , 2015 .

[264]  Emil Simiu,et al.  Wind Effects on Structures: An Introduction to Wind Engineering , 1980 .

[265]  B. Launder,et al.  Progress in the development of a Reynolds-stress turbulence closure , 1975, Journal of Fluid Mechanics.

[266]  M Michiel Bottema,et al.  Wind climate and urban geometry , 1993 .

[267]  A. Robins,et al.  The flow around a surface-mounted cube in uniform and turbulent streams , 1977, Journal of Fluid Mechanics.

[268]  M. Kato.  The modeling of turbulent flow around stationary and vibrating square cylinders , 1993 .

[269]  Qingyan Chen,et al.  Ventilation performance prediction for buildings: A method overview and recent applications , 2009 .

[270]  Peter Lynch,et al.  The origins of computer weather prediction and climate modeling , 2008, J. Comput. Phys..

[271]  Peter V. Nielsen.  Berechnung der Luftbewegung in einem zwangsbelüfteten Raum , 1973 .

[272]  Yoshihide Tominaga,et al.  Ten Questions Concerning Modeling of Near-Field Pollutant Dispersion in the Built Environment. , 2016 .

[273]  Alessandro Parente,et al.  Improved k–ε model and wall function formulation for the RANS simulation of ABL flows , 2011 .

[274]  Pietro Salizzoni,et al.  Experimental Study of Pollutant Dispersion Within a Network of Streets , 2010 .

[275]  Jan Carmeliet,et al.  PIV measurements and analysis of transitional flow in a reduced- scale model: ventilation by a free plane jet with Coanda effect , 2012 .

[276]  Peter V. Nielsen,et al.  Fifty years of CFD for room air distribution , 2015 .

[277]  Farzad Bazdidi-Tehrani,et al.  Grid resolution assessment in large eddy simulation of dispersion around an isolated cubic building , 2013 .

[278]  Hansheng Pan,et al.  Lateral channeling within rectangular arrays of cubical obstacles , 2010 .

[279]  Douglas K. Lilly,et al.  The Meteorological Development of Large Eddy Simulation , 2000 .

[280]  K. M. Lam,et al.  Wind environment around the base of a tall building with a permeable intermediate floor , 1992 .

[281]  A. D. Penwarden,et al.  Wind environment around buildings , 1975 .

[282]  Gianluca Iaccarino,et al.  Numerical analysis and modeling of plume meandering in passive scalar dispersion downstream of a wall-mounted cube , 2013 .

[283]  T. Trucano,et al.  Verification, Validation, and Predictive Capability in Computational Engineering and Physics , 2004 .

[284]  Yasushi Uematsu,et al.  Application of infrared thermography and a knowledge-based system to the evaluation of the pedestrian-level wind environment around buildings , 1997 .

[285]  A. Robins,et al.  A wind tunnel investigation of plume dispersion in the vicinity of a surface mounted Cube—I. The flow field , 1977 .

[286]  Jia-ping Liu,et al.  Wind weakening in a dense high-rise city due to over nearly five decades of urbanization , 2018, Building and Environment.

[287]  P. Heiselberg,et al.  Ventilation of Large Spaces in Buildings: Analysis and Prediction Techniques , 1998 .

[288]  N. Isyumov,et al.  Comparison of full-scale and wind tunnel wind speed measurements in the commerce court plaza , 1975 .

[289]  D. P. Karadimou,et al.  Modelling of two-phase, transient airflow and particles distribution in the indoor environment by Large Eddy Simulation , 2015 .

[290]  Shuzo Murakami,et al.  Numerical simulation of turbulent flowfield around cubic model current status and applications of model and LES , 1990 .

[291]  Theodore Stathopoulos,et al.  Wind environmental conditions in passages between two long narrow perpendicular buildings , 2008 .

[292]  D. Lilly,et al.  On the numerical simulation of buoyant convection , 1962 .

[293]  Yoshihide Tominaga,et al.  AIJ guidelines for practical applications of CFD to pedestrian wind environment around buildings , 2008 .

[294]  Michael Schatzmann,et al.  Recommendations on the use of CFD in wind engineering , 2004 .

[295]  Shuzo Murakami,et al.  Three-dimensional numerical simulation of turbulent flow around buildings using the k−ε turbulence model , 1989 .

[296]  Andrew W. Woods,et al.  Natural ventilation of a building with heating at multiple levels , 2007 .

[297]  Yoshihide Tominaga,et al.  CFD Simulation of Near-Field Pollutant Dispersion in the Urban Environment: A Review of Current Modeling Techniques , 2013 .

[298]  Steven J. Emmerich,et al.  Application of a large eddy simulation model to study room airflow , 1998 .

[299]  P. J. Jones,et al.  Computational fluid dynamics for building air flow prediction—current status and capabilities , 1992 .

[300]  N. Isyumov,et al.  Studies of the pedestrian level wind environment at the boundary layer wind tunnel laboratory of the University of Western Ontario , 1978 .

[301]  Sang Joon Lee,et al.  Improvement of natural ventilation in a large factory building using a louver ventilator , 2008 .

[302]  Roger A. Pielke,et al.  Large eddy simulation of microburst winds flowing around a building , 1993 .

[303]  Yoshihide Tominaga,et al.  CFD prediction of gaseous diffusion around a cubic model using a dynamic mixed SGS model based on composite grid technique , 1997 .

[304]  P. Richards,et al.  Appropriate boundary conditions for computational wind engineering models using the k-ε turbulence model , 1993 .

[305]  David P. Hamilton,et al.  Ten steps applied to development and evaluation of process-based biogeochemical models of estuaries , 2008, Environ. Model. Softw..

[306]  Christopher J. Roy,et al.  Review of code and solution verification procedures for computational simulation , 2005 .

[307]  Yoshihide Tominaga,et al.  Numerical simulation of dispersion around an isolated cubic building: Comparison of various types of k–ɛ models , 2009 .

[308]  Enes Yasa,et al.  Computational evaluation of building physics—The effect of building form and settled area, microclimate on pedestrian level comfort around buildings , 2016 .

[309]  Mats Sandberg,et al.  CFD and wind-tunnel analysis of outdoor ventilation in a real compact heterogeneous urban area: Evaluation using “air delay” , 2017 .

[310]  Xinyang Jin,et al.  New inflow boundary conditions for modelling the neutral equilibrium atmospheric boundary layer in computational wind engineering , 2009 .

[311]  Hans-Jürgen Niemann,et al.  The boundary layer wind tunnel: an experimental tool in building aerodynamics and environmental engineering , 1993 .

[312]  J. Deardorff.  A numerical study of three-dimensional turbulent channel flow at large Reynolds numbers , 1970, Journal of Fluid Mechanics.

[313]  Qingyan Chen,et al.  Assessment of Various Turbulence Models for Transitional Flows in an Enclosed Environment (RP-1271) , 2009 .

[314]  S. Orszag,et al.  Renormalization group analysis of turbulence. I. Basic theory , 1986, Physical review letters.

[315]  Junjie Liu,et al.  Predicting contaminant dispersion using modified turbulent Schmidt numbers from different vortex structures , 2017, Building and Environment.

[316]  Qingyan Chen.  COMPARISON OF DIFFERENT k-ε MODELS FOR INDOOR AIR FLOW COMPUTATIONS , 1995 .

[317]  Christos N. Markides,et al.  An experimental study of the flow through and over two dimensional rectangular roughness elements: Deductions for urban boundary layer parameterizations and exchange processes , 2014 .

[318]  Bert Blocken,et al.  CFD simulation of near-field pollutant dispersion on a high-resolution grid : a case study by LES and RANS for a building group in downtown Montreal , 2011 .

[319]  Shuzo Murakami.  Computational wind engineering , 1990 .

[320]  Yoshihide Tominaga,et al.  Velocity-pressure field of cross ventilation with open windows analyzed by wind tunnel and numerical simulation , 1992 .

[321]  Nicolas G. Wright,et al.  On the use of the k–ε model in commercial CFD software to model the neutral atmospheric boundary layer , 2007 .

[322]  Panagiota Karava,et al.  Wind-Induced Internal Pressures in Buildings with Large Façade Openings , 2012 .

[323]  C. J. Apelt,et al.  Simulation of wind flow around three-dimensional buildings , 1989 .

[324]  C. W. Hirt,et al.  Calculating three-dimensional flows around structures and over rough terrain☆ , 1972 .

[325]  Andrea Freda,et al.  Local-scale forcing effects on wind flows in an urban environment: Impact of geometrical simplifications , 2017 .

[326]  D N Sørensen,et al.  Quality control of computational fluid dynamics in indoor environments. , 2003, Indoor Air: International Journal of Indoor Environment and Health.