混流式水轮机效率的数值预测  

Numerical efficiency hill chart prediction for a complete Francis turbine

作　　者：肖惠民[1] 杨建东[1] 杨建明[2] 吴玉林[3] 

机构地区：[1]武汉大学水文水资源与水电工程科学国家重点实验室 [2]湖北清江水电开发有限责任公司,湖北宜昌443000 [3]清华大学热能工程系,北京100084

出　　处：《水力发电学报》2005年第6期100-103,共4页Journal of Hydroelectric Engineering

摘　　要：随着计算机技术及计算流体动力学的进步,三维粘性流动数值模拟逐步被应用于水轮机的设计和优化。本文在雷诺时均N-S方程基础上,采用有限体积法和标准k-ε紊流模型,计算了混流式模型水轮机多部件、动静耦合的三维粘性流动,并利用数值计算结果预测了模型水轮机的水力效率,预测的水轮机等效率曲线与模型试验结果相吻合。The efficiency hill chart of a complete turbine is predicted by Navier-Stokes flow analysis. The numerical simulation of a complete Francis turbine including rotor-stator interaction is based on the Reynolds-averaged NavierStokes equations with the standard k-ε turbulence model. The governing equations are discretizated with nonstaggered grid by means of the finite volume method. Calculated efficiency hill chart and the measured results are compared

关 键 词：动力机械工程 效率曲线预测 三维紊流计算 混流式水轮机 耦合计算 动静干涉 

分 类 号：TK730.2[交通运输工程—轮机工程]