Three dimensional heat and mass transfer effects across high speed reattaching flows
Abstract
A theoretical study is made of periodic spanwise disturbances in nominally two-dimensional or axisymmetric reattaching laminar and turbulent separated flows. A compressible small disturbance flow analysis of the local vortex instability mechanism involved is made emphasizing the three dimensional heat transfer effects including blowing or suction through the surface. It is shown that Reynolds analogy does not apply between the disturbance skin friction and heat transfer. The corresponding thermal response of the wall surface is also analyzed taking into account the spanwise heat conduction within the underlying surface material; it is governed by the characteristic ratio of boundary layer heat transfer to the spanwise heat conduction. The theoretical predictions are in good agreement with experimental observations.
- Publication:
-
AIAA, Aerospace Sciences Meeting
- Pub Date:
- January 1976
- Bibcode:
- 1976aiaa.meetQ....I
- Keywords:
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- Axisymmetric Flow;
- Conductive Heat Transfer;
- Mass Transfer;
- Reattached Flow;
- Separated Flow;
- Flow Distortion;
- Flow Velocity;
- Hypersonic Flow;
- Laminar Flow;
- Turbulent Flow;
- Two Dimensional Flow;
- Fluid Mechanics and Heat Transfer