A study on the frequency modulation doppler global velocimetry system

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Authors

Wang, T.Y.
Zhang, H.J.
He, C.S.
Chen, H.

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International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics

Abstract

Paper presented at the 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta, 16-18 July, 2012.
The principle of the frequency modulation Doppler global velocimetry (FM-DGV) is presented in this paper. A FM-DGV system has been developed, of which a CCD camera was used as the detector to receive scattering light. The system was made up of a narrow band laser, a light-sheet-generating optics, an iodine cell, a frequency monitor unit, and an image acquisition CCD camera. Based on this system, measurements have been carried out on the velocity distributions of a rotating wheel. The results show that the system works well, and the maximum velocity measurement error is less than 2m/s.

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Keywords

Frequency modulation, Frequency modulation Doppler global velocimetry, Velocity distributions of a rotating wheel, (FM-DGV)

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Citation

Wang, TY, Zhang, HJ, He, CS & Chen, H 2012, A study on the frequency modulation doppler global velocimetry system, Paper presented to the 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta, 16-18 July, 2012.