Measurement of surface rheological effects on a rotating flow
Abstract
Experiments are reported in which laser Doppler anemometry was used to measure azimuthal velocity as a function of radius near the boundary between a liquid annulus and a rigid freely floating cylinder (case 1) and between a liquid annulus and an air core contained in a rapidly rotating horizontal cylindrical container (case 2). In the first case, good agreement is obtained with theoretical predictions, thus verifying the method. In the case of a free surface (case 2), it is concluded that (1) the interface can support stress and that (2) the radial scale of azimuthal velocity variations is distinctly different from that observed in the case of a rigid surface.
- Publication:
-
Materials Processing in the Reduced Gravity Environment of Space
- Pub Date:
- 1982
- Bibcode:
- 1982mprg.proc..177G
- Keywords:
-
- Flow Measurement;
- Laser Doppler Velocimeters;
- Rotating Cylinders;
- Rotating Fluids;
- Velocity Measurement;
- Angular Velocity;
- Cylindrical Tanks;
- Liquid-Solid Interfaces;
- Reduced Gravity;
- Solid Surfaces;
- Space Commercialization;
- Fluid Mechanics and Heat Transfer