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本文基于N-S方程和大涡模拟(LES)模型,采用贴体坐标和四面体网格系统和SIMPLE算法,较准确地对混流式水轮机内部三维非稳定湍流流动及其尾水管内的旋涡压力脉动进行了数值模拟。
Based on NS equations and large eddy simulation (LES) models, the three-dimensional unsteady turbulent flow in a Francis turbine and the eddy pressure pulsation in the draft tube are accurately predicted by using body-fitted coordinates and tetrahedron grid systems and the SIMPLE algorithm. Numerical simulation.