匝道声屏障工程平均风压系数数值风洞模拟

Numerical wind tunnel simulation of mean wind pressure coefficient on ramp sound barrier

基于FLUENT计算流体动力学数值模拟平台,采用雷诺平均法对匝道声屏障工程的复杂形体结构进行了数值模拟,计算区域的划分采用具有良好适应性的非结构网格,计算得到其表面的风压分布,并分析了结构多风向角下的结构风载体型系数。同时,探讨了屏障内表面风压对整个结构的影响,计算过程采用有限体积法对控制微分方程进行离散,并用SIMPLE压力校正算法来实现非线性方程的迭代求解。

Based on the FLUENT computational fluid dynamics simulation platform, the complicated structure of the ramp sound barrier was simulated by the Reynolds-averaged approach, and dividing the calculate region with the good adaptive unstructured grid, the wind pressure distribution of barrier under action of multi angle wind load was simulated, and the shape coefficients of wind load were obtained. And investigated the influence of the inner surface＇s wind pressure on the whole structure, used the finite volume method to discretize differential equations, and achieved nonlinear equations iteratively with SIMPLE pressure correction algorithm in the calculation.