Accession Number : ADA311340

Title :   Instrumentation for Real-Time Optical Diagnostics in Compressible Turbulent Flows.

Descriptive Note : Final rept. 15 Jan 95-14 Apr 96,

Corporate Author : OHIO STATE UNIV COLUMBUS

Personal Author(s) : Sawiny, M.

PDF Url : ADA311340

Report Date : JUN 1996

Pagination or Media Count : 7

Abstract : Over the past several years, the Principal Investigator has made significant contributions to the to the understanding of compressible turbulent flows. He has utilized innovative modern optical diagnostics to explore (1) the turbulence structure of wall bounded shear layers, (2) the effects of extra strain rates, such as convex curvature and favorable pressure gradient, on the turbulence structure of wall bounded shear layers, (3) the effect of compressibility on the Reynolds stresses and the turbulence structure of free shear layers, and (4) control of supersonic jets. The latest state-of-the-art optical diagnostics that the PI has been using include Filtered Rayleigh Scattering (FRS) technique for flow visualizations, and Planar Doppler Velocimetry (PDV) technique for 4-instantaneous velocity measurements.

Descriptors :   *TURBULENT FLOW, *COMPRESSIBLE FLOW, *OPTICAL DETECTORS, PRESSURE GRADIENTS, YAG LASERS, REAL TIME, TURBULENCE, OPTICAL IMAGES, PULSED LASERS, FLOW VISUALIZATION, STRAIN RATE, FLOW FIELDS, OPTICAL ANALYSIS, RAYLEIGH SCATTERING, SHEAR STRESSES, SUPERSONIC FLOW, REYNOLDS NUMBER, SHEAR FLOW, LASER VELOCIMETERS, CONTROL JETS.

Subject Categories : Optical Detection and Detectors
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE