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New techniques for multi-component flow velocity measurement using high-frequency pulsed diode lasers

✍ Scribed by D. Dopheide; M. Rinker; V. Strunck

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
302 KB
Volume
3
Category
Article
ISSN
0955-5986

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✦ Synopsis

The application of high-frequency pulsed laser diodes for fringe-type laser Doppler anemometry allows multi-component flow velocity measurements by using only one receiver and one signal processing chain. This is effected by synchronization of the laser pulses with the sampling process of the data acquisition system. Consequently, an identical wavelength can be used for all components. The experimental verification of this new technique is described. The technique permits the design of miniaturized and low cost optical flow sensors which can be used for low and high speed flows.

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