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并列双圆柱绕流中宽窄尾流的识别方法

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Indexed by:期刊论文

Date of Publication:2016-05-31

Journal:中国舰船研究

Included Journals:PKU、ISTIC、CSCD

Volume:11

Issue:3

Page Number:37-42

ISSN No.:1673-3185

Key Words:边界瞬时涡量守恒;并列双圆柱;宽尾流;窄尾流;高雷诺数

Abstract:采用基于边界瞬时涡量守恒(IVCBC)的纯拉格朗日涡方法,结合并列双圆柱的结构特点,建立双圆柱绕流数值计算模型。在间隙率T/D=1.1~2.6时,并列双圆柱绕流会出现宽尾流(WW)和窄尾流(NW)现象。利用两圆柱间隙中心点的诱导速度方向与间隙流的偏转方向同步的特性,提出一种区别宽、窄尾流的数值计算方法;比较间隙流的偏转方向与该间隙中点的速度偏转方向,并进行典型的算例分析。结果表明:该方法能准确区别宽尾流和窄尾流,可为数值研究这一特殊区域的流体特征提供重要的数值计算方法。

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