A method to deduce plane stream line pictures from photographed particle traces
Abstract
A method to obtain a quantitative picture of the two-dimensional velocity field of a flow is described. The method is based on a multiple snapshot on film or videotape and uses computer aided interactive evaluation. The measurement setup and the calibration procedure are described. Pictures are shown for two examples. The water-aluminum powder mixture is well suited for water flow visualization. The laser is a very good light source to produce a narrow section of illumination. The limitations of the evaluation procedure are given.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- July 1985
- Bibcode:
- 1985STIN...8713686O
- Keywords:
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- Flow Distribution;
- Flow Visualization;
- Two Dimensional Flow;
- Calibrating;
- Photographic Film;
- Video Data;
- Fluid Mechanics and Heat Transfer