On-axis laser doppler velocimetry for turbomachinery applications using optical fiber techniques

David A. Egan; Stephen W. James; Ralph P. Tatam

doi:10.1117/12.293392

21 November 1997 On-axis laser doppler velocimetry for turbomachinery applications using optical fiber techniques

David A. Egan, Stephen W. James, Ralph P. Tatam

Proceedings Volume 3172, Optical Technology in Fluid, Thermal, and Combustion Flow III; (1997) https://doi.org/10.1117/12.293392
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

Conventional laser Doppler velocimeters, based on the Doppler difference technique are capable of characterizing 3D flow fields. However, when working with limited optical access, there is an increase in the uncertainties in the measurement of the velocity component of the flow directed along the axis of the instrument. In this paper schemes incorporating interferometric and intensity based techniques are proposed to measure the on-axis velocity component over a wide range of velocities, operating within the constraints imposed by the limited optical access available in turbomachinery applications.

Citation Download Citation

David A. Egan, Stephen W. James, and Ralph P. Tatam "On-axis laser doppler velocimetry for turbomachinery applications using optical fiber techniques", Proc. SPIE 3172, Optical Technology in Fluid, Thermal, and Combustion Flow III, (21 November 1997); https://doi.org/10.1117/12.293392

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