Accession Number : ADA299395

Title :   Research on Supersonic Reacting Flows.

Descriptive Note : Annual technical rept. 15 Feb 94-14 Feb 95,

Corporate Author : STANFORD UNIV CA DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Bowman, C. T. ; Hanson, R. K. ; Mungal, M. G. ; Reynolds, W. C.

PDF Url : ADA299395

Report Date : 15 MAR 1995

Pagination or Media Count : 144

Abstract : An experimental and computational investigation of supersonic reacting flows, with the objective of gaining a fundamental understanding of the flow physics and chemistry interactions, is in progress. During the past year, experiments were conducted in a supersonic shear flow facility to visualize the instantaneous, three-dimensional structure of the compressible mixing layer and to measure the mixing efficiency. The mixing efficiency was measured by applying a new planar laser-induced fluorescence (PLIF) technique, termed "cold chemistry." The PLIF techniques, developed previously in our laboratory, were refined to allow measurements of temperature, velocity and multiple species in transient high-speed flows. Current codes for direct numerical simulation of time-developing, three-dimensional, reacting, compressible mixing layers were adapted for a new generation of supercomputers. Previously-developed stability analyses were extended to the range of conditions being investigated in the supersonic reacting flow experiments. (AN)

Descriptors :   *TURBULENT FLOW, *COMPRESSIBLE FLOW, *SUPERSONIC COMBUSTION, *SUPERSONIC FLOW, MATHEMATICAL MODELS, COMPUTERIZED SIMULATION, IMAGE PROCESSING, TRANSIENTS, AIR BREATHING ENGINES, LOW TEMPERATURE, STABILITY, LASER INDUCED FLUORESCENCE, AIR FLOW, BOUNDARY LAYER, PARALLEL PROCESSING, COMPUTATIONAL FLUID DYNAMICS, FLOW VISUALIZATION, PROPULSION SYSTEMS, MIE SCATTERING, FLOW FIELDS, COMBUSTION STABILITY, NITROGEN OXIDES, ACETONES, HYDROXYL RADICALS, SHEAR FLOW, THREE DIMENSIONAL FLOW, JET MIXING FLOW, HIGH SPEED CAMERAS.

Subject Categories : Fluid Mechanics
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE