Study of hot flow through turbines using laser anemometry

Sohail H. Zaidi; Robin L. Elder

doi:10.1117/12.150560

6 August 1993 Study of hot flow through turbines using laser anemometry

Sohail H. Zaidi, Robin L. Elder

Proceedings Volume 2052, Fifth International Conference on Laser Anemometry: Advances and Applications; (1993) https://doi.org/10.1117/12.150560
Event: Laser Anemometry: Advances and Applications: Fifth International Conference, 1993, Koningshof, Veldhoven, Netherlands

Abstract

The use of laser anemometry as a technique for flow investigation within turbomachines is now well established. Difficulties in using this technique, however, vary from machine to machine and depend upon the nature of flow involved. Various parameters such as optical access, temperature and turbulence level influence the difficulties. In this paper we explain how laser anemometry was used to investigate the flow downstream the two radial inflow turbines which variously involve such difficulties. Small radial inflow turbines have various applications in industry and are successfully used as major components of small gas turbines and turbochargers. Units were provided by american (USA) industry. Flow conditions involved in the two units were very different as one unit was operated at 400 degree(s)C inlet temperature and the other at near ambient inlet conditions but which involved subzero turbine outlet temperatures. The paper presents a comparative study of laser anemometry techniques used to measure flow in these two very different situations. Problems such as seeding, optical access have been detailed. Finally, typical results are presented.

Citation Download Citation

Sohail H. Zaidi and Robin L. Elder "Study of hot flow through turbines using laser anemometry", Proc. SPIE 2052, Fifth International Conference on Laser Anemometry: Advances and Applications, (6 August 1993); https://doi.org/10.1117/12.150560

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