摘要
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,用SIMPLE算法求解,对混流式水轮机内部流动进行了三维非定常紊流计算,较准确地预测了一混流式水轮机在各工况下的内部流动,尤其是尾水管和转轮内的漩涡流动。
A three-dimensional unsteady turbulent flow is calculated numerically for the flow inside the passage of Francis turbine based on the Navier-Stokes equations and LES （large-eddy simulation） model. SIMPLE algorithm with the body-fitted coordinate and tetrahedron grid system is applied for the solution of the LES equations to accurately predict the inside flow under different working conditions of Francis turbine, especially the vortex flow inside the draft tube and the runner.
出处
《中国农村水利水电》
北大核心
2007年第3期55-58,63,共5页
China Rural Water and Hydropower
基金
国家自然科学基金资助(50179021)
