Accession Number : AD0763335

Title :   An Investigation of the Use of Holography in Studying Supersonic Flow in Inlets,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Spring,W. C. , III ; Ragsdale,W. C.

Report Date : 20 APR 1973

Pagination or Media Count : 28

Abstract : Experiments have investigated the usefulness of holographic interferometry as a flow visualization technique for studying supersonic flow in air inlets. A bench-scale two-dimensional supersonic (Mach 3) nozzle diffuser with plexiglass sidewalls was used to simulate inlet flow phenomena. One series of tests was performed with a rectangular tab of metal on the bottom wall of the channel to cause boundary-layer separation. A second series was run with a cone model mounted in the center of the channel. A real image technique of reconstruction was used to obtain photographs of the holographic interferograms from each test series. (Modified author abstract)

Descriptors :   (*DUCT INLETS, *FLOW VISUALIZATION), (*OPTICAL IMAGES, *SUPERSONIC FLOW), SIMULATION, SUPERSONIC NOZZLES, SUPERSONIC DIFFUSERS, FLOW FIELDS, TEST EQUIPMENT, TEST METHODS, LASERS

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE