Three-dimensional spatial secondary instability in boundary-layer flows
Abstract
The analysis of Nayfeh and Bozatli (1979) is extended to the case of nonparallel three-dimensional secondary instability, with allowance made for the growth of the primary wave. The basic flow consists of the superposition of the Blasius flow and a two-dimensional Tollmien-Schlichting (primary) wave which acts as a parametric exciter for the secondary wave. The results obtained show that the principal parametric resonance is very effective in exciting the Squire mode for values of the spanwise wave number larger than a small critical value (of the order of 0.05), whereas it is ineffective in exciting the Orr-Sommerfeld mode unless the spanwise wave number exceeds 0.4.
- Publication:
-
AIAA, 18th Fluid Dynamics and Plasmadynamics and Lasers Conference
- Pub Date:
- July 1985
- Bibcode:
- 1985fdpd.confT....N
- Keywords:
-
- Boundary Layer Stability;
- Computational Fluid Dynamics;
- Secondary Flow;
- Spatial Distribution;
- Three Dimensional Boundary Layer;
- Blasius Flow;
- Tollmien-Schlichting Waves;
- Fluid Mechanics and Heat Transfer