Photon correlation techniques for wind-tunnel anemometry
Abstract
This paper reviews the experience gained at the Royal Aircraft Establishment in laser anemometry techniques, using a photon correlator. The theory of operation of the equipment is summarised for both laminar and turbulent flows and methods of data-reduction discussed, with particular reference to the optical criteria which should be met. Flow seeding requirements are considered and a practical system described. The results of a number of experiments on subsonic and supersonic airflows, both laminar and turbulent, are presented.
- Publication:
-
ICIASF 1977; 7th International Congress on Instrumentation in Aerospace Simulation Facilities
- Pub Date:
- 1977
- Bibcode:
- 1977icia.cong...40A
- Keywords:
-
- Flow Measurement;
- Laser Doppler Velocimeters;
- Photon Beams;
- Signal Analysis;
- Wind Tunnel Tests;
- Wind Velocity Measurement;
- Autocorrelation;
- Correlators;
- Data Reduction;
- Graphs (Charts);
- Laminar Flow;
- Parallel Processing (Computers);
- Systems Engineering;
- Turbulent Flow;
- Instrumentation and Photography