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以南水北调引江中线工程清河渡槽设计为背景，采用弱可压流体运动方程的大涡模拟方法分析风对渡槽的绕流．首先通过方形柱体绕流计算与前人实验和计算的比较来证明本文方法的有效性，进而计算渡槽风绕流，通过计算得到精细的绕流流态，作用在渡槽上的平均压力，不稳定的脉动压力及绕流尾流的旋涡脱落特性等重要成果．
Taking the design of Qinghe Aqueduct of the Middle Route of South-North Water Diversion Project as a background, a large eddy simulation method of weakly compressible fluid equations is used to analyze the flow around the aqueduct. First, the validity of the proposed method is verified by comparison of the flow around a square cylinder with the previous experiments and calculations, and then the flow around the aqueduct is calculated. By calculating the flow around the aqueduct, the average pressure acting on the aqueduct is not Stable pulsating pressure and vortex shedding flow around the wake of the important achievements.