Wind Tunnel Experiment and Numerical Simulation of Wind Pressure Distribution of Large-Span Membrane Structure

To determinate the wind loads on the roof structure of stadium in Zhejiang Industry and Commerce University,the wind tunnel experiment is carried out and the numerical simulation of wind pressure is completed for comparison.The organic class model with aspect ratio of 1∶200 is made and located at the big section of the architectural regurgitant tunnel.Through the tunnel experiment the wind pressure coefficient of every measure point is obtained when the wind blow along 24 different orientations.The wind pressures on the roof are simulated using four turbulence models,standard k-e,renormalization group k-e,realizable k-e and reynolds stress model(RSM),and the comparison with the wind tunnel experimental results is archived.The results show that the wind loads on the roof structure are mainly suctions,and the coefficients on wind ward sides and projecting locations are big while the coefficients on the end of wind stream and concave locations are small.The results of numerical simulation are consistent with those of tunnel experiment and the differences among the results of four turbulence models are not notable.