Optimized LDA system for application to high-speed wind tunnels
Abstract
A complete LDA system is described which is optimized for applications to high-speed wind tunnels in general and to blow-down tunnels in particular. This system, however, can also be used in many other high-speed facilities such as free jets, combustion chambers, etc. A description of the optical part of the instrument which includes a novel traverse system is given. Thereafter, the data acquisition system is presented which not only is adapted to a high traverse speed even in flow fields with high velocity gradients, but makes it possible to determine all kinds of statistics including statistical bias correction as well as auto- and crosscorrelation functions.
- Publication:
-
2nd International Symposium on Applications of Laser Anemometry to Fluid Mechanics
- Pub Date:
- 1985
- Bibcode:
- 1985alaf.symp...10P
- Keywords:
-
- Blowdown Wind Tunnels;
- Laser Anemometers;
- Velocity Measurement;
- Computer Programs;
- High Speed;
- Laser Applications;
- Microcomputers;
- Signal Processing;
- Supersonic Wind Tunnels;
- Instrumentation and Photography