Experience with laboratory LDA by measuring flow fields in rotating turbomachinery
Abstract
A laboratory LDA system is operated in the one-color dual-beam mode with confocal annular detection and polarizational separation of the backscattered Doppler signal, allowing for measurements of axial or tangential velocity components up to 600 m/s in absolute coordinates. Doppler signals between the blade passages are gated and evaluated by a counter. The operation of the system is illustrated by measurements of the axial-flow-field velocity component at the impeller of a research turbocharger.
- Publication:
-
IN: Optical methods in dynamics of fluids and solids; Proceedings of the International Symposium
- Pub Date:
- 1985
- Bibcode:
- 1985omdf.proc...65G
- Keywords:
-
- Flow Measurement;
- Laser Doppler Velocimeters;
- Rotor Blades (Turbomachinery);
- Argon Lasers;
- Lenses;
- Mirrors;
- Superchargers;
- Tracers;
- Two Phase Flow;
- Velocity Distribution;
- Instrumentation and Photography