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Ghost离心叶轮内部湍流流动数值模拟

Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2009-03-31

Journal: 流体机械

Included Journals: CSCD、ISTIC、PKU

Volume: 37

Issue: 3

Page Number: 19-23

ISSN: 1005-0329

Key Words: 离心叶轮;湍流;二次流;数值模拟

Abstract: 应用FLUENT软件对Ghost离心叶轮内部湍流流动进行了数值研究,其中湍流模型采用雷诺应力模型(RSM),转子和定子的耦合采用混合平面模型(MP).计算结果与Johnson的试验结果基本一致,表明了RSM能较好的预测离心叶轮内的湍流流动.分析了离心叶轮内部的湍流流动特性,表明边界层内的二次流对低能流体的输运,使叶轮出口形成"尾迹一射流"现象,同时尾迹区的存在造成能量的损失,且尾迹区位置取决于无量纲数Rossby数.

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