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Determination of Optimal Structural Parameters for Wind Barriers Using Numerical Simulation

Xiaoxu Wu 1, Xiaofan Yang2, Zhongquan Charlie Zheng3, Xueyong Zou1, Chunlai Zhang1, Alan Wei Zheng3
1Beijing Normal University, Beijing, China, 2Pacific Northwest National Laboratory, Richland, WA, USA, 3University of Kansas, Lawrence, KS, USA

 

In this study, a series of wind barriers with different structural parameters were simulated by using computational fluid dynamics (CFD) techniques and then the optimal structural parameters of wind barriers were determined. We compared airflow fields and shelter effects of wind barriers (constructed with different structural parameters) between simulations and measurements. Excellent agreements between simulations and wind-tunnel experiments have been achieved at upwind measuring locations; while minor discrepancies in the velocity profile comparisons have been noticed in the downwind direction. Based on the airflow field and shelter effect comparisons of single-row wind barriers with different porosities, the porosity of 0.3-0.4 is determined to be the optimal value for constructing wind barriers. Shelter effect comparisons for wind barriers with different inter-row spacing and row numbers suggest that multi-row wind barriers be constructed with a row spacing of 5-7h for optimal blown-sand control.