Recent developments in oscillatory thermocapillary flows
Abstract
Recent research aimed at understanding the transition of thermocapillary flows from steady to oscillatory states is described. Particular attention is given to conditions for the onset of the oscillations and how they are influenced by changes in configuration such as geometry and thermal signature. It is shown that, for high Prandtl number fluids, the oscillations are caused by the coupling among the imposed thermal signature, the surface flow, and the surface deformations. The surface deformations cause a time lag between the surface and bulk-return flows and alter the driving force (surface-temperature gradient).
- Publication:
-
AIAA/IKI Microgravity Science Symposium
- Pub Date:
- 1991
- Bibcode:
- 1991ikim.symp...25O
- Keywords:
-
- Capillary Flow;
- Free Convection;
- Oscillating Flow;
- Reduced Gravity;
- Transition Flow;
- Prandtl Number;
- Steady Flow;
- Temperature Distribution;
- Temperature Gradients;
- Fluid Mechanics and Heat Transfer