Global linear stability analysis of time-averaged flows

被引：42

作者：

Mittal, Sanjay ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Aerosp Engn, Kanpur 208016, Uttar Pradesh, India

来源：

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS | 2008年 / 58卷 / 01期

关键词：

circular cylinder; linear stability analysis; finite element method; Reynolds averaged Navier-Stokes equations;

D O I：

10.1002/fld.1714

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The global linear stability analysis (LSA) of stationary/steady flows has been applied to various flows ill the past and is fairly well understood. The LSA of time-averaged flows is explored in this paper. It is shown that the LSA of time-averaged flows call result in useful information regarding its stability. The method is applied to Study flow past a cylinder at Reynolds number (Re) beyond the onset of vortex shedding. Compared with the direct numerical simulation, LSA of the Re = 100 steady flow severely Underpredicts the vortex shedding frequency. However, the LSA of the time-averaged flow results in the correct value of the non-dimensional frequency, St, of the associated instability. Copyright P 2007 John Wiley & Sons, Ltd.

引用

页码：111 / 118

页数：8

共 18 条

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