Accession Number : ADA314041

Title :   Shocktube Planar Laser Induced Fluorescence Measurements in Support of the AEDC Impulse Facility,

Corporate Author : ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFS TN

Personal Author(s) : Smith, M. S. ; Williams, W. D. ; Price, L. L. ; Jones, J. H.

PDF Url : ADA314041

Report Date : 1994

Pagination or Media Count : 8

Abstract : This paper describes the status of a program underway at AEDC to develop the Planar Laser Induced Fluorescence (PLIF) method of measurement of temperature and number density for use in the AEDC Impulse Shock Tunnel Facility. The technique is being developed in a laboratory shocktube environment which economically provides repeatable, well-characterized flow fields. A laboratory of this type is critical for the demonstration, validation, and calibration of facility diagnostics systems. PLIF nitric oxide images in shocktube flows for selected incident Mach numbers between Ms = 2.0 and 2.5 and temperatures between 1,000 and 1,500 K for spherical, 30-deg half-angle cone, and 10-deg half-angle blunt cone model geometries are presented. PLIF nitric oxide images of the flow field around a 10-deg half-angle blunt cone recorded during initial runs of the Impulse Facility are shown. Emission spectroscopy measurements in the nose cone bowshock region of the model in the AEDC Impulse Facility flow field are reported.

Descriptors :   *LASER INDUCED FLUORESCENCE, *FLOW FIELDS, *SHOCK TUBES, YAG LASERS, HIGH TEMPERATURE, HIGH PRESSURE, COMPUTATIONAL FLUID DYNAMICS, LASER BEAMS, GAS DYNAMICS, LASER APPLICATIONS, EMISSION SPECTROSCOPY, MACH NUMBER, FREE STREAM, NITROUS OXIDE, HYPERSONIC FLOW, STAGNATION POINT, NOSE CONES, SHOCK TUNNELS.

Subject Categories : Lasers and Masers
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE