High speed visualization of rapidly varying flows
Abstract
It is noted that high-speed multiple spark visualization leads to quantitative information about unsteady flows by restoring their time history. It is used here for mixing layers, high Reynolds number wakes, and the flow subsequent to riffle firing. A slow motion film, made from visualization pictures, restores the phenomena with a time scale of the order of 10,000. The light beams are symmetrical with respect to the wind tunnel section. The characteristic Reynolds number R varies between 100,000 and 500,000 and the Mach number M varies between 0.3 and 1.0.
- Publication:
-
International Symposium on Flow Visualization
- Pub Date:
- 1981
- Bibcode:
- 1981flvi.symp..383D
- Keywords:
-
- Base Flow;
- Cylindrical Bodies;
- Flow Distribution;
- Flow Visualization;
- Reynolds Number;
- Unsteady Flow;
- Mach Number;
- Mixing Layers (Fluids);
- Multiphase Flow;
- Schlieren Photography;
- Shock Wave Propagation;
- Vortices;
- Wind Tunnel Tests;
- Fluid Mechanics and Heat Transfer