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中文摘要：
基于Reynolds时均N—S方程中的Realizable κ-ε模型对上海闵浦大桥桥址处风环境进行数值模拟。数值模拟采用有限体积法对控制微分方程进行离散，并采用SIMPLE压力校正算法来实现非线性方程的迭代求解。数值结果与在同济大学TJ-3风洞中的试验值进行了对比分析，总体吻合较好。由于风剖面是结构抗风设计中一个极为重要的因素，在比对试验的基础上，分析了双曲冷却塔对桥址风剖面的干扰影响。数值模拟表明，由于冷却塔的存在，当在一定的风偏角范围，桥址处在冷却塔的尾流中，风速明显偏小，在冷却塔高度范围，风剖面并不符合B类地貌选取0．16的指数分布率。
英文摘要：
Based on Reynolds-averaged N-S equations and Realizable κ-ε model, the wind environment with complex terrain around Minpu Bridge in Shanghai was numerically simulated. The finite volume method was employed to discrete the governing differential equations, and SIMPLE pressure correction iteration algorithm was adopted to solve the nonlinear equations. The results of numerical simulation were compared with wind tunnel test data performed in TJ-3 wind tunnel. The numerical results were found to have a good agreement with experimental results. Because the wind profile is of great importance to structural design of bridges as well as safety assessment, the effect of two cooling towers on the wind pro- file was investigated. The numerical results show that, the wind speed decreases obviously when wind blows from the direction of the two cooling towers, and that wind profiles in the height of cooling towers do not obey the power exponent rule of terrain category B, whose index is 0.16.
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