Nonlinear Instability in the Region of Laminar-Turbulent Transition in Supersonic Three-Dimensional Flow over a Flat Plate

被引：0

作者：

I. I. Lipatov

R. Ya. Tugazakov

机构：

[1] Central Aerohydrodynamic Institute (TsAGI),

来源：

Fluid Dynamics | 2018年 / 53卷

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摘要：

Direct numerical simulation is applied to obtain laminar-turbulent transition in supersonic flow over a flat plate. It is shown that, due to the nonlinear instability, Tollmien–Schlichting waves generated in the boundary layer lead to the formation of oblique disturbances in the flow. These represent a combination of compression and expansion waves, whose intensities can be two orders higher than that of external harmonic disturbances. The patterns of the three-dimensional flow over the plate are presented and the structures of the turbulent flat-plate boundary layers are described for the freestream Mach numbers M = 2 and 4.

引用

页码：285 / 295

页数：10

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