Effect of transverse curvature on the stability of compressible boundary layers
Abstract
Linear stability theory is used to determine the effect of transverse curvature on the location of the onset of transition for supersonic boundary layers. Results have been obtained for Mach 5 and Mach 1.25 boundary layers formed over cylinders and sharp cones. As transverse curvature increases, the growth rates for the first mode (asymmetric) instability increase, while those for the second mode decrease. The overall effect of increasing curvature is to lower the transition Reynolds number. Transverse curvature is also shown to introduce a unit Reynolds number effect on transition location. For a given cylinder, transition Reynolds number increases with increasing unit Reynolds number.
- Publication:
-
AIAA, Fluid Dynamics, 21st Plasma Dynamics and Lasers Conference, 21st, Seattle, WA, June 18-20, 1990. 17 p.
- Pub Date:
- June 1990
- Bibcode:
- 1990fdpd.confS....S
- Keywords:
-
- Boundary Layer Stability;
- Compressible Boundary Layer;
- Computational Fluid Dynamics;
- Curvature;
- Reynolds Number;
- Supersonic Boundary Layers;
- Boundary Layer Transition;
- Cones;
- Cylinders;
- Laminar Boundary Layer;
- Turbulence;
- Wind Tunnel Models;
- Fluid Mechanics and Heat Transfer