Accession Number : ADA329556

Title :   Large Capacity PIV Diagnostic Facility for Turbulence Research

Descriptive Note : Final technical rept. 1 Mar 95-28 Feb 97

Corporate Author : ILLINOIS UNIV AT URBANA DEPT OF THEORETICAL AND APPLIED MECHANICS

Personal Author(s) : Adrian, Ronald J.

PDF Url : ADA329556

Report Date : 23 JUL 1997

Pagination or Media Count : 37

Abstract : 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.

Descriptors :   *COMPUTATIONAL FLUID DYNAMICS, *LASER VELOCIMETERS, TURBULENT BOUNDARY LAYER, SHEAR STRESSES, IMAGES, NONEQUILIBRIUM FLOW, WIND TUNNELS, MOMENTUM TRANSFER, TELEVISION CAMERAS, STEREOMAPPING.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE