Large Capacity PIV Diagnostic Facility for Turbulence Research
Final technical rept. 1 Mar 95-28 Feb 97
ILLINOIS UNIV AT URBANA DEPT OF THEORETICAL AND APPLIED MECHANICS
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The purpose of this grant was to construct a stereographic particle image velocimeter SPIV for the measurement of three-dimensional velocity vectors on planar slices through fluids defined by laser light sheets. The facility has been constructed from components, requiring the use of multiple vendors. A stereographic particle image velocimeter using two 2,048 x 2,048 pixel video cameras has been constructed and shown to work. An attached paper by Liu, Adrian, and Meinhart 1996 described the system and demonstrated its applicability to turbulence research. The system was used in 1996 to make measurements in planes parallel to the wall of a turbulent boundary layer, at the UIUC boundary layer wind tunnel in order to study the low speed streak spacing of boundary layers and their contribution to the Reynolds shear stress. It was also installed in the National Diagnostic Facility of the Illinois Institute of Technology for use in a collaborative study of non-equilibrium turbulent boundary layers. The system is one of a kind, and it has been an unqualified success.
- Fluid Mechanics