On the linear stability of channel flow over riblets

被引：28
|
作者：
Ehrenstein, U
机构：
[1] Université Lille 1, Lab. de Mécanique de Lille, URA CNRS 1441, 59655 Villeneuve d'Ascq Cedex, Bd. P. Langevin
来源：
PHYSICS OF FLUIDS | 1996年 / 8卷 / 11期
关键词：
D O I：
10.1063/1.869091
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
In the present study channel flow with the lower wall mounted with streamwise riblets is considered. The laminar flow state is computed and its stability is investigated by superimposing infinitesimal perturbations, which leads to a hydrodynamic stability problem in a complex geometry. Linear stability characteristics for riblets with several scalloped cross sections are computed. The computations show that at the primary instability level the laminar flow in the presence of riblets is more unstable than channel flow with smooth walls. (C) 1996 American Institute of Physics.
引用
收藏
页码：3194 / 3196
页数：3
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