三元离心叶轮内部紊流流场的数值分析  

NUMERICAL ANALYSIS OF THREE DIMENSIONAL TURBULENT FLOW FIELD INSIDE A CENTRIFUGA L IMPELLER

作　　者：张谋进[1] 谷传纲[1] 苗永淼[1] 

机构地区：[1]西安交通大学

出　　处：《航空动力学报》1995年第1期21-23,共3页Journal of Aerospace Power

摘　　要：应用ｋ－ε紊流模型及非交错网格ＳＩＭＰＬＥ方法，求解了三维时均Ｎ－Ｓ方程。对一三元离心式叶轮在设计工况下的内部流场进行了数值分析，并将计算结果与实验结果进行了对比，两者相符较好。本文的数值分析能够反映出三元离心叶轮内部的实际流动情况，特别是在叶轮出口附近射流－尾流这一特殊现象的形式。Since the flow fields inside centrifugal impellers are turbulent with strong eff ect of secondary flows and of complex ge ometry,it is hard to use S1 S2 theory an d invicid viscous iteration method for n umerical analysis,even at the design poi nt.For the above reasons,it is necessary to investigate the flows inside centrif ugal impeller by solving three dimension al Navier Stokes equations.In the presen t paper,the three dimensional Reynolds a veraged N S equations are solved,coupled with the high Reynolds number k ε turbu lence model.The Semi Implicit Method for Pressure Linked Equations (SIMPLE) algo rithm is employed,and the nonstaggered g rid arrangement is also used.The compute d results are in good agreement with pub lished experimental data.

关 键 词：紊流 叶轮 数值计算 三元离心叶轮 航空发动机 

分 类 号：V232.4[航空宇航科学与技术—航空宇航推进理论与工程] O357.5[理学—流体力学]