Doppler global velocimetry - A new way to look at velocityA new laser velocimetry technique, Doppler global velocimetry, is described. This technique is capable of simultaneously measuring in real time the three components of velocity of an entire particle field illuminated by a laser light sheet. A prototype one-component velocimeter is described along with the signal processing electronics. The system was tested by measuring the velocity field from a rotating wheel and a small subsonic jet flow in the laboratory. The first wind tunnel test measured the vortical velocity field above a delta wing. The results are presented and compared with fringe-type laser velocimeter and five-hole probe data.
Document ID
19930039800
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Meyers, James F. (NASA Langley Research Center Hampton, VA, United States)
Komine, Hiroshi (Northrop Research and Technology Center Palos Verdes Peninsula, CA, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1991
Publication Information
Publication: In: Laser anemometry - Advances and applications 1991; Proceedings of the 4th International Conference, Cleveland, OH, Aug. 5-9, 1991. Vol. 1 (A93-23776 08-35)
Publisher: American Society of Mechanical Engineers