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本文应用大涡模拟方法建立了管道流在高雷诺数条件下的数值求解方法，推导了用求和下标所表示的三维控制方程在贴体坐标下的张量形式．应用有限差分法对控制方程进行离散求解，用编制的三维湍流场LES计算程序对方弯管内的流动进行了计算验证．
In this paper, a large eddy simulation method is used to establish the numerical solution of the pipe flow under high Reynolds number conditions. The tensor form of the three-dimensional governing equations represented by the subscript subscript is deduced. The governing equations were discretized by finite difference method. The flow in the other elbows was calculated and verified by using the LES calculation program of three-dimensional turbulence field.