Laminar-turbulent transition in a laminar separation bubble: Influence of disturbance amplitude on bubble size and bursting

被引：0

作者：

Marxen, Olaf ^{[1
]}

机构：

[1] Stanford Univ, Ctr Turbulence Res, Stanford, CA 94305 USA

来源：

HIGH PERFORMANCE COMPUTING IN SCIENCE AND ENGINEERING '07 | 2008年

关键词：

D O I：

10.1007/978-3-540-74739-0_18

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

Direct numerical simulations of a short laminar separation bubble and its bursting are carried out. The bubble is developing on a flat plate due to an externally imposed pressure gradient. Laminar-turbulent transition is triggered by small disturbance input with fixed frequency to keep the bubble short. The short bubble reaches a statistically steady state, while switching off disturbance input yields a growing separation bubble. This phenomenon is denoted as bubble-bursting process. Disturbance input does not only prevent bursting, but can also serve to control the short bubble. Bubble size decreases with increased disturbance amplitude. Performance data on a NEC SX-8 super computer are compared for two different resolutions.

引用

页码：261 / +

页数：4

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