Spatial direct numerical simulation of transition phenomena in supersonic flat-plate boundary layers

被引：0
|
作者：
Fezer, A [1 ]
Kloker, M [1 ]
机构：
[1] Univ Stuttgart, Inst Aerodynam & Gasdynam, D-70550 Stuttgart, Germany
来源：
LAMINAR-TURBULENT TRANSITION | 2000年
关键词：
D O I：
暂无
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Direct Numerical Simulations (DNS) are carried out for flat-plate boundary layers at Ma = 2.0 and 6.8 to investigate subharmonic combination-mode phenomena caused by the interaction of two three-dimensional disturbance waves with fundamental and subharmonic frequency. An unexpected long growth of the nonlinearly generated subharmonic combination mode is observed which is independent of the disturbance amplitudes. The relevance of the subharmonic modes for transition is examined by comparison with a pure oblique-type breakdown scenario.
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页码：415 / 420
页数：6
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