Large-eddy simulation of vortex breakdown in compressible swirling jet flow

被引：12
|
作者：
Mueller, S. B. [1 ]
Kleiser, L. [1 ]
机构：
[1] Swiss Fed Inst Technol, Inst Fluid Dynam, CH-8092 Zurich, Switzerland
来源：
COMPUTERS & FLUIDS | 2008年 / 37卷 / 07期
关键词：
D O I：
10.1016/j.compfluid.2007.04.010
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
Vortex breakdown in a compressible swirling jet flow is investigated by large-eddy simulation (LES) using the approximate deconvolution model. Conditions are chosen similar to recent experimental investigations by Liang and Maxworthy [Liang H, Maxworthy T. An experimental investigation of swirling jets. J Fluid Mech 2005;525:115] for incompressible flow. LES results are presented for two simulations of a swirling jet at Mach number Ma = 0.6 with and without inflow forcing by imposed linear instability disturbances. Both the forced and the self-excited jet show three-dimensional helical waves developing in the jet breakdown zone. The features observed in the two simulations are compared to each other as well as to the experiments with respect to flow statistics and instability behaviour. Both simulations show favourable qualitative agreement with the experiment. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：844 / 856
页数：13
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