Generation of Richtmyer-Meshkov and secondary instabilities during the interaction of an energy release with a cylinder shock layer

被引：17
|
作者：
Azarova, O. A. [1 ]
机构：
[1] RAS, Dorodnicyn Comp Ctr, Dept Math Modeling Comp Aided Design Syst, Moscow 119333, Russia
来源：
AEROSPACE SCIENCE AND TECHNOLOGY | 2015年 / 42卷
关键词：
Supersonic flow; Richtmyer-Meshkov instability; Secondary instability; Vortex drag reduction; Complex conservative difference schemes; SHEAR-LAYER; DEPOSITION; GAS;
D O I：
10.1016/j.ast.2015.01.027
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
The instabilities and vortices which arise as a result of an energy release effect on a shock layer produced by a blunt cylinder in a supersonic flow are considered. An energy deposition is supposed to have a shape of an infinite heated rarefied channel. The Richtmyer-Meshkov instability accompanied by the secondary instability is simulated inside a front separation area at Mach 1.9. The secondary Kelvin-Helmholtz instability is shown to be generated on the shear layers inside the density stratified vortex caused by the Richtmyer-Meshkov instability. Vortex drag reduction via the Richtmyer-Meshkov instability origination is discussed. The baroclinic nature of the vorticity production is established for the instabilities. Complex conservative difference schemes are used in the calculations. (C) 2015 Elsevier Masson SAS. All rights reserved.
引用
收藏
页码：376 / 383
页数：8
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