Accession Number : ADA330735

Title :   A PIV System for Time-Resolved Measurements at High Reynolds Numbers in the National Diagnostic Facility.

Descriptive Note : Final rept. 15 Mar 95-14 Mar 97,

Corporate Author : ILLINOIS INST OF TECH CHICAGO FLUID DYNAMICS RESEARCH CENTER

Personal Author(s) : Wark, Candace ; Naguib, Ahmed ; Fabris, Drazen ; Nagib, Hassan

PDF Url : ADA330735

Report Date : 30 JUN 1997

Pagination or Media Count : 5

Abstract : The necessary equipment for a two camera DPIV system was purchased. It included two cameras, two frame grabbers, a PC based computer, a laser and shutter, optics for the camera, optics for the laser, a workstation for computational processing, and control and signal conditioning electronics. A unique feature of this system is the utilization of special cameras which allow externally synchronized acquisition of two frames separated by only 1- 5 microns, permitting cross-correlation PIV analysis for flows up to 250 m/s. The DPIV system has been put together and tested in the Mark V Morkovin wind tunnel at IIT. Comparison between the statistics of the resulting velocity field and earlier hot-wire measurements in the same wind tunnel reveals the ability of the new DPIV system to provide high spatial resolution measurements with high accuracy. The new system is currently being adapted for use in the National Diagnostic Facility (NDF) at IIT.

Descriptors :   *LASER VELOCIMETERS, EXPERIMENTAL DESIGN, FLOW RATE, TWO DIMENSIONAL FLOW.

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE