Attention is given to a technique for flow visualization by the use of optically activated tracers. The technique does not require disturbing inserts or measuring probes located within the flow. The flow is produced in a cylindrical vessel completely filled with fluid. So that the solid particles will have the same density as the surrounding medium, high-density phosphorescent crystals of copper-doped zinc sulfide are used. The technique yields observations of single particles, is not influenced by the scattering of the illuminating light, and employs direct electronic recording without a photographic interstage.
International Symposium on Flow Visualization
- Pub Date:
- Flow Measurement;
- Flow Visualization;
- Zinc Sulfides;
- Instrumentation and Photography