Stability of a spanwise nonuniform boundary layer flow

被引：1
|
作者：
M. V. Ustinov
机构：
来源：
Fluid Dynamics | 1998年 / 33卷 / 6期
关键词：
Velocity Fluctuation; Boundary Layer Flow; Symmetric Mode; Antisymmetric Mode; Streaky Structure;
D O I：
10.1007/BF02698654
中图分类号：
学科分类号：
摘要：
The linear stability of a boundary layer flow with a spanwise-periodic nonuniformity in the velocity profile is investigated. This flow can be considered as a model of a streaky structure occurring in the boundary layer at a high freestream turbulence level. It is shown that for a small nonuniformity amplitude symmetric modes similar to Tollmien-Schlichting waves are the most unstable. At higher nonuniformity amplitudes, antisymmetric modes, qualitatively different from Tollmien-Schlichting waves and having a larger phase velocity, are the most amplified.
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页码：856 / 863
页数：7
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