Accession Number : AD0761601

Title :   Interferometric Studies of the Flow in Fast-Expanding Nozzles,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Leverance,Robert A. ; Zimet,Elihu ; Winkler,Eva M.

Report Date : 19 MAR 1973

Pagination or Media Count : 31

Abstract : Interferometric studies have been performed in the test section of the Naval Ordnance Laboratory (NOL) 127 mm shock tunnel under conditions that closely simulate the flow in a gas dynamic laser (GDL) cavity. A Mach-Zehnder interferometer has been used to determine the density distribution in two nozzle configurations. In a two-dimensional fast-expanding nozzle, time-resolved interferograms were obtained at 200 microsecond intervals. For a multiple nozzle module interferograms were obtained in two mutually perpendicular directions. The experimental setup is described and the results are discussed. (Author)

Descriptors :   (*GAS LASERS, *NOZZLE GAS FLOW), STATISTICAL DISTRIBUTIONS, SHOCK TUBES, DENSITY, TEST METHODS, INTERFEROMETERS, DEFLECTION, SHOCK WAVES, NOZZLES, FLOW FIELDS, ARGON, PHOTOGRAPHY

Subject Categories : Lasers and Masers
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE