Susceptibility of a boundary layer to acoustic perturbations
Abstract
A solution is presented to the problem of the excitation of Tollmien-Schlichting waves by external acoustic waves that are scattered by small local surface irregularities. The amplitudes of the generated instability waves in a boundary layer on a plane plate are calcuated for incoming flow Mach 0.2-0.8. The results are found to be in good agreement with the available experimental data. A comparison is made between the efficiencies of the excitation of Tollmien-Schlichting waves by sound at local irregularities and at distributed flow inhomogeneities due to the nonparallelism of the boundary layer.
- Publication:
-
PMTF Zhurnal Prikladnoi Mekhaniki i Tekhnicheskoi Fiziki
- Pub Date:
- February 1987
- Bibcode:
- 1987PMTF........30Z
- Keywords:
-
- Acoustic Instability;
- Boundary Layer Stability;
- Boundary Layer Transition;
- Computational Fluid Dynamics;
- Surface Roughness Effects;
- Tollmien-Schlichting Waves;
- Compressible Flow;
- Gas Flow;
- Laminar Boundary Layer;
- Navier-Stokes Equation;
- Turbulent Boundary Layer;
- Fluid Mechanics and Heat Transfer