Numerical study of a naturally cross-ventilated building

Abstract This paper deals with the numerical three-dimensional prediction of the induced flow patterns around and inside a building, which is cross-ventilated in a natural way. The air change rate is controlled by two opposite openings on the building envelope, as a function of wind velocity and its incidence angle. The numerical methodology is based on the finite volume numerical solution of the Navier–Stokes equations, using the CFD commercial code FLUENT. The numerical results are compared with available experimental data regarding the refresh rate of the building's room and the relative velocity profiles at the window openings, indicating a good agreement. Furthermore, a detailed description of the natural ventilation process is provided, whilst additional information regarding the induced velocity and pressure field is presented; information which cannot be easily extrapolated by experimental methodologies. Finally, the impact of the inner topology of the building on the induced flow field is investigated.

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

[2]  B. J. Bailey,et al.  Measurement and prediction of greenhouse ventilation rates , 1992 .

[3]  Malcolm J. Cook,et al.  CFD Modelling of Natural Ventilation: Combined Wind and Buoyancy Forces , 2003 .

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

[5]  Elena G. Dascalaki,et al.  Predicting single sided natural ventilation rates in buildings , 1995 .

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

[7]  Christopher Baker,et al.  Experimental measurements and computations of the wind-induced ventilation of a cubic structure , 2000 .

[8]  Matthew Peter Straw.  Computation and measurement of wind induced ventilation , 2000 .

[9]  Yi Jiang,et al.  Study of natural ventilation in buildings with large eddy simulation , 2001 .

[10]  M. Orme.  Estimates of the energy impact of ventilation and associated financial expenditures , 2001 .

[11]  Shigeki Nishizawa,et al.  A Wind Tunnel Full-Scale Building Model Comparison between Experimental and CFD Results Based on the Standard k-ε Turbulence Representation , 2004 .

[12]  Leon R. Glicksman,et al.  Design analysis of single-sided natural ventilation , 2003 .

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

[14]  Ronald L. Petersen.  Wind Tunnel Investigation of the Effect of Platform-Type Structures on Dispersion of Effluents from Short Stacks , 1986 .

[15]  Per Heiselberg,et al.  Single-sided natural ventilation driven by wind pressure and temperature difference , 2008 .

[16]  Qingyan Chen,et al.  Using computational tools to factor wind into architectural environment design , 2004 .

[17]  Joel H. Ferziger,et al.  Status of Large Eddy Simulation: Results of a Workshop , 1997 .

[18]  Mahroo Eftekhari,et al.  Air flow distribution in and around a single-sided naturally ventilated room , 2003 .

[19]  Peter V. Nielsen,et al.  Large Eddy Simulations of the Flow in Three-Dimensional Ventilated Room , 1996 .

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

[21]  Masaaki Ohba.  11th International Conference on Air Distribution in Rooms , 2009 .

[22]  W. A. Dalgliesh,et al.  Comparison of model/full-scale wind pressures on a high-rise building , 1975 .

[23]  Nyuk Hien Wong,et al.  The study of active stack effect to enhance natural ventilation using wind tunnel and computational fluid dynamics (CFD) simulations , 2004 .

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

[25]  B. A. Kader.  Temperature and concentration profiles in fully turbulent boundary layers , 1981 .

[26]  C. J. Koinakis,et al.  Combined thermal and natural ventilation modeling for long-term energy assessment: validation with experimental measurements , 2005 .

[27]  Tine Steen Larsen,et al.  Natural Ventilation Driven by Wind and Temperature Difference , 2006 .