Study on stall behavior of a straight-bladed vertical axis wind turbine with numerical and experimental investigations

This paper presents a straight-bladed vertical axis wind turbine (VAWT) model for the evaluation of the stall phenomenon associated with unsteady flow around the airfoil surface with numerical and experimental investigations. In wind tunnel experiments, in order to investigate flow visualization, light-weight tufts attached to the inner surface of blade are used to gain insight on the flow characteristics of VAWT during rotation in the low Reynolds numbers. In numerical analysis, a 2D computational investigation on the stall phenomenon and aerodynamic characteristics at the VAWT airfoil is associated with the standard κ−e model and Shear Stress Transport κ−ω (SST κ−ω) turbulence model. And then, the stall behavior is validated according to compare the results of wind tunnel experiment and numerical analysis. From this study, it is concluded that the numerical simulation captures well the vortex-shedding predominated flow structure which is experimentally obtained and the results quantitatively agree well with the wind tunnel experimental data. Moreover, the flow separation behavior of the airfoil shows the importance of stall phenomenon and the interaction of the separated vortex with the blade as mechanisms in lift and drag coefficients.

[1]  Takao Maeda,et al.  Wind tunnel and numerical study of a straight-bladed vertical axis wind turbine in three-dimensional analysis (Part I: For predicting aerodynamic loads and performance) , 2016 .

[2]  Carlos Simao Ferreira,et al.  2D PIV Visualization of Dynamic Stall on a Vertical Axis Wind Turbine , 2007 .

[3]  S. Roh,et al.  Effects of a blade profile, the Reynolds number, and the solidity on the performance of a straight bladed vertical axis wind turbine , 2013 .

[4]  Maria Vahdati,et al.  Dynamic Stall for a Vertical Axis Wind Turbine in a Two-Dimensional Study , 2011 .

[5]  Samir Ziada,et al.  Computational fluid dynamics simulation of the aerodynamics of a high solidity, small‐scale vertical axis wind turbine , 2012 .

[6]  Erik Dick,et al.  A free vortex simulation method for the straight bladed vertical axis wind turbine , 1987 .

[7]  Shengyi Wang,et al.  Numerical investigations on dynamic stall of low Reynolds number flow around oscillating airfoils , 2010 .

[8]  M. Raciti Castelli,et al.  Effect of Dynamic Stall, Finite Aspect Ratio and Streamtube Expansion on VAWT Performance Prediction using the BE-M Model , 2012 .

[9]  Yannick Hoarau,et al.  Turbulence modelling of the flow past a pitching NACA0012 airfoil at 105 and 106 Reynolds numbers , 2008 .

[10]  L. A. Danao,et al.  An Experimental Investigation into the Influence of Unsteady Wind on the Performance of a Vertical Axis Wind Turbine , 2013 .

[11]  Richard E. Brown,et al.  Simulating the aerodynamic performance and wake dynamics of a vertical‐axis wind turbine , 2011 .

[12]  K. Mcmanus,et al.  Control of dynamic stall using pulsed vortex generator jets , 1998 .

[13]  Ervin Bossanyi,et al.  Wind Energy Handbook , 2001 .

[14]  Krishna Vijayaraghavan,et al.  The effects of aerofoil profile modification on a vertical axis wind turbine performance , 2015 .

[15]  J. H. Strickland,et al.  A Vortex Model of the Darrieus Turbine: An Analytical and Experimental Study , 1979 .

[16]  M. Raffel,et al.  Experimental and numerical investigations of dynamic stall on a pitching airfoil , 1996 .

[17]  Lin Lu,et al.  Weather data and probability analysis of hybrid photovoltaic–wind power generation systems in Hong Kong , 2003 .

[18]  Zhi Tao,et al.  Turbulence modeling of deep dynamic stall at relatively low Reynolds number , 2012 .

[19]  Mohamed. A. El-Samanoudy,et al.  Effect of some design parameters on the performance of a Giromill vertical axis wind turbine , 2010 .

[20]  Takao Maeda,et al.  Fundamental study on aerodynamic force of floating offshore wind turbine with cyclic pitch mechanism , 2016 .

[21]  Maria Vahdati,et al.  Unsteady flow simulation of a vertical axis augmented wind turbine: A two-dimensional study , 2014 .

[22]  Hongxing Yang,et al.  Investigation on feasibility of ionic liquids used in solar liquid desiccant air conditioning system , 2012 .

[23]  Takao Maeda,et al.  Effect of number of blades on aerodynamic forces on a straight-bladed Vertical Axis Wind Turbine , 2015 .

[24]  James F. Manwell,et al.  Book Review: Wind Energy Explained: Theory, Design and Application , 2006 .

[25]  Ning Qin,et al.  Unsteady Flow Simulation and Dynamic Stall Behaviour of Vertical Axis Wind Turbine Blades , 2011 .

[26]  T. Maeda,et al.  Visualization of the flow field and aerodynamic force on a Horizontal Axis Wind Turbine in turbulent inflows , 2016 .

[27]  A. Laneville,et al.  Dynamic Stall: The Case of the Vertical Axis Wind Turbine , 1986 .

[28]  T. Maeda,et al.  Effect of turbulent inflows on airfoil performance for a Horizontal Axis Wind Turbine at low Reynolds numbers (part I: Static pressure measurement) , 2016 .

[29]  Ning Qin,et al.  Wind tunnel and numerical study of a small vertical axis wind turbine , 2008 .

[30]  Ken Badcock,et al.  Investigation of Three-Dimensional Dynamic Stall Using Computational Fluid Dynamics , 2005 .

[31]  Ernesto Benini,et al.  The Darrieus wind turbine: Proposal for a new performance prediction model based on CFD , 2011 .

[32]  Takao Maeda,et al.  Measurement of the flow field around straight-bladed vertical axis wind turbine , 2016 .

[33]  Nobuyuki Fujisawa,et al.  Observations of dynamic stall on Darrieus wind turbine blades , 2001 .

[34]  Takao Maeda,et al.  Study on power performance for straight-bladed vertical axis wind turbine by field and wind tunnel test , 2016 .

[35]  F. Scarano,et al.  Visualization by PIV of dynamic stall on a vertical axis wind turbine , 2009 .

[36]  Takao Maeda,et al.  Analysis of aerodynamic load on straight-bladed vertical axis wind turbine , 2014 .

[37]  H. Bijl,et al.  Simulating Dynamic Stall in a 2D VAWT: Modeling strategy, verification and validation with Particle Image Velocimetry data , 2007 .

[38]  Ion Paraschivoiu,et al.  Double-multiple streamtube model for studying vertical-axis wind turbines , 1988 .

[39]  Derek B. Ingham,et al.  Computational fluid dynamics (CFD) mesh independency techniques for a straight blade vertical axis wind turbine , 2013 .

[40]  Hester Bijl,et al.  Simulating dynamic stall in a two‐dimensional vertical‐axis wind turbine: verification and validation with particle image velocimetry data , 2010 .

[41]  S. Tullis,et al.  Flow separation on a high Reynolds number, high solidity vertical axis wind turbine with straight and canted blades and canted blades with fences , 2012 .

[42]  C MandalA,et al.  The Effects of Dynamic Stall and Flow Curvature on the Aerodynamics of Darrieus Turbines Applying the Cascade Model. , 1994 .