Vortex/wave interaction in compressible boundary-layer transition

1996 ◽  
Author(s):  
Dominic Davis ◽  
A. Khorrami ◽  
Frank Smith
Keyword(s):  
Boundary Layer ◽  
Wave Interaction ◽  
Boundary Layer Transition ◽  
Compressible Boundary Layer ◽  
Layer Transition

A Surrogate-Based eN Method for Compressible Boundary-Layer Transition Prediction

2021 ◽  
pp. 1-14
Author(s):  
Han Nie ◽  
Wenping Song ◽  
Zhonghua Han ◽  
Jianqiang Chen ◽  
Guohua Tu
Keyword(s):  
Boundary Layer ◽  
Boundary Layer Transition ◽  
Compressible Boundary Layer ◽  
Layer Transition ◽  
Transition Prediction

The resonant interaction of disturbances at laminar-turbulent transition in a boundary layer

1984 ◽  
Vol 138 ◽  
pp. 209-247 ◽  
Author(s):  
Yu. S. Kachanov ◽  
V. Ya. Levchenko
Keyword(s):  
Boundary Layer ◽  
Three Dimensional ◽  
Low Frequency ◽  
Wave Interaction ◽  
Resonant Interaction ◽  
Boundary Layer Transition ◽  
Layer Transition ◽  
Turbulent Transition ◽  
Random Priming ◽  
Tollmien Schlichting

The three-dimensional resonant interaction of a plane Tollmien-Schlichting wave, having a frequency f1, with a pair of oblique waves having frequencies ½ f1, was observed and studied experimentally. In the initial stages, the interaction proved to be a parametric resonance, resulting in the amplification of small random priming (background) oscillations of frequency ½ f1, and of a packet of low-frequency oscillations. The resonant interaction of waves in a boundary layer was investigated also by introducing a priming oscillation with frequency f’ = ½ f1 + Δf for different values of the frequency detuning Δf. The importance of the discovered wave interaction in boundary-layer transition is demonstrated. Causes of realization of different types of laminar-flow breakdown are discussed.

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