Accession Number : ADA189690

Title :   Turbulent Reacting Flows and Supersonic Combustion.

Descriptive Note : Annual report 15 Sep 86-30 Sep 87,

Corporate Author : STANFORD UNIV CA HIGH TEMPERATURE GASDYNAMICS LAB

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

PDF Url : ADA189690

Report Date : 30 Sep 1987

Pagination or Media Count : 28

Abstract : An experimental and computational investigation of supersonic combustion flows is in progress. The principal objective of the research is to gain a more fundamental understanding of mixing and chemical reaction in supersonic flows. The research effort comprises three inter-related elements: 1) an experimental study of mixing and combustion in a supersonic plane mixing layer; 2) development of laser-induced fluorescence techniques for time-resolved two-dimensional imaging of species concentration, temperature, velocity and pressure; and, 3) numerical simulations of compressible reacting flows. The design of the supersonic plane mixing layer was completed and the high-pressure gas storage system was installed. The pulsed lasers and camera systems, to be used for two-dimension flow field imaging, were installed and initial performance evaluations are in progress. This work has focussed on development of appropriate numerical methods for performing full-turbulence simulations of high-speed compressible flows and on the application of these methods to temporally and spatially developing compressible mixing layers. The effort to date has identified several promising numerical methods for compressible flow problems. In addition, a code was developed for compressible mixing layers, and initial simulation using this code shows interesting features, such as imbedded shock waves, in high-speed mixing layers. Keywords: Turbulent reacting flow, Laser diagnostics, Computational fluid dynamics.

Descriptors :   *COMPRESSIBLE FLOW, *TURBULENT FLOW, *SUPERSONIC COMBUSTION, *SUPERSONIC FLOW, CAMERAS, CHEMICAL REACTIONS, COMPUTATIONS, DIAGNOSIS(GENERAL), FLOW FIELDS, FLUID DYNAMICS, GASES, HIGH PRESSURE, HIGH VELOCITY, IMAGES, LASER INDUCED FLUORESCENCE, LASER APPLICATIONS, LAYERS, MIXING, NUMERICAL ANALYSIS, NUMERICAL METHODS AND PROCEDURES, PULSED LASERS, SHOCK WAVES, SIMULATION, STORAGE, SUPERSONIC CHARACTERISTICS, TEST AND EVALUATION, TIME, TWO DIMENSIONAL FLOW, CONCENTRATION(CHEMISTRY), TEMPERATURE, PRESSURE MEASUREMENT

Subject Categories : Combustion and Ignition
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE