Modal interactions in a Bickley jet: comparison of theory with direct numerical simulation

被引：1

作者：

Mallier, R ^{[1
]}

Haslam, M ^{[1
]}

机构：

[1] Univ Western Ontario, Dept Math Appl, London, ON, Canada

来源：

MATHEMATICS AND COMPUTERS IN SIMULATION | 2003年 / 62卷 / 1-2期

关键词：

plane jet; nonlinear stability; numerical simulation;

D O I：

10.1016/S0378-4754(02)00181-7

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

This study is concerned with three-dimensional transition in plane wakes and jets. Nonlinear stability theory has predicted that interactions between different instability modes can play an important role in that transition. In this paper, we consider interactions between varicose and sinuous oblique disturbances in the Bickley jet, using both nonlinear stability theory (in its nonlinear critical layer form) and direct numerical simulation using a spectral method. We will first present an overview of the nonlinear stability theory which indicates that a (nonlinear) interaction between the modes should occur, and then present simulations that appear to support the theory. (C) 2002 IMACS. Published by Elsevier Science B.V. All rights reserved.

引用

页码：109 / 115

页数：7

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