Turbulent flow visualization - A technique for extracting accurate quantitative information
Abstract
An automated data reduction procedure for studying the physics of coherent structures in turbulent flows is described. The hydrogen bubble technique is used to obtain accurate quantitative information in a turbulent flat plate boundary layer flow facility. Motion pictures of hydrogen bubble motion are scanned by a standard TV camera, and the signal is then digitized by a high-speed video digitizer. The frame advance, digitizing, and data storage procedure are performed by an interfaced mini-computer. It is concluded that this procedure provides practical means of minimizing the time and tediousness in reducing flow visualization data.
- Publication:
-
5th Biennial Symposium on Turbulence
- Pub Date:
- 1979
- Bibcode:
- 1979turb.symp..287C
- Keywords:
-
- Data Reduction;
- Flat Plates;
- Flow Visualization;
- Turbulent Boundary Layer;
- Turbulent Flow;
- Bubbles;
- Coherence;
- Data Storage;
- Minicomputers;
- Motion Pictures;
- Television Cameras;
- Instrumentation and Photography