Numerical Simulation of Wind Pressure on Spatial Structures

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Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (4) : 121-126,.

论文

Numerical Simulation of Wind Pressure on Spatial Structures

Li Qingya, Ye Jihong

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Abstract

Based on FLUENT soft platform with Reynolds Stress Model (RMS) and Large Eddy Simulation (LES), the wind pressure distributions on the structures such as dome, cylinder, catenoid, saddle and elliptic hyperbolic paraboloid are obtained in steady and unsteady numerical simulation. The auto-regressive model is adopted to generate the time history of pulse wind speed. The time series satisfy the target spectrum and spatial correlations. Then the time series of pulse wind speed are imposed on the inflow boundary of omputational zone. The steady numerical results conform to the experimental data much at one. The unsteady numerical results match the experimental data a little worse, and the simulation precision of positive Gaussian structures is better than that of negative Gaussian structures.