Wang, T.Y.Zhang, H.J.He, C.S.Chen, H.2014-12-152014-12-152012Wang, 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, 2012.9781868549863http://hdl.handle.net/2263/42980Paper 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.5 pagesPDFenUniversity of PretoriaFrequency modulationFrequency modulation Doppler global velocimetryVelocity distributions of a rotating wheel(FM-DGV)Presentation