摘要
基于三维定常N-S方程和标准k-ε湍流模型,采用贴体坐标、结构化网格和基于有限体上的有限元法,对400m水头水泵水轮机模型转轮泵工况进行内部流场模拟,通过转轮内部有限体上的速度、压力积分求解转轮扬程、净正吸出高度和效率,从而预测转轮泵工况的能量、扬程及空化性能,并对转轮的内部流速分布、涡分布和叶片压力分布进行了分析研究。
Based on 3-D-steady Navier - Stokes equations with the standard k -ε turbulence closure models, the structure mesh with fitted body coordinate and the finite element based finite volume method, the 400 meters head pump-turbine runner inner flow was simulated in the pump mode. The head, efficiency and net positive suction head of the pump-turbine have been calculated through integrating the velocity and pressure of the finite volume in the runner. The velocity, vorticity and the blade pressure distribution rules were all discussed. The meridional velocity near the leading edge of the blade had the ＂S＂ shape along the radius, and that near the trailing edge of the blade had the ＂M＂ shape along the radius. The vorticity mainly appeared on the blade, crown and band of the runner.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2008年第4期69-72,82,共5页
Transactions of the Chinese Society for Agricultural Machinery
关键词
水泵水轮机
转轮
泵工况
流场
数值模拟
Pump-turbine, Runner, Pump mode, Flow field, Numerical simulation
