摘要
本文基于N -S方程和标准的k -ε紊流模型 ,采用贴体座标和交错网格系统 ,用SIMPLEC算法的水轮机通流部件内部的流动[1] 进行数值模拟 ,提出了基于周期边界条件的性质 ,把它纳入计算域的处理办法 ,并与传统的办法进行比较 ,结果表明 :此处理方法更接近真实流动 ,并且可以用于水轮机转轮内部的流动分析中 。
In this paper,the simulations of the three dimensional turbulent flows through hydraulic turbine's components have been presented based on the solution of Navier Stokes equations,using the standard k-ε turbulent model with body fitted coordination and staggering grid system.SIMPLEC algorithm is adopted in the numerical procedure.A new method to treat the periodic boundary condition is submitted,in which the periodic boundary conditions is included in the calculated domain.The calculating results of the new method are compared with those of traditional ones.This indicated that the new method can give us a much better result to approach true flow.It can be used in simulation flow through rotational impeelers,and can apply alternative turbulent model or large eddy simulation to do this job.
出处
《水力发电学报》
EI
CSCD
北大核心
2002年第2期78-84,共7页
Journal of Hydroelectric Engineering
