Accession Number : ADA319698

Title :   Combustion and Mixing Studies in Compressible Flows.

Descriptive Note : Final rept. 18 Nov 93-31 May 96,

Corporate Author : TAITECH INC BEAVERCREEK OH

Personal Author(s) : Chen, T. H. ; Creese, A. ; Dasgupta, S. ; Fuller, R. P. ; Wu, P. K.

PDF Url : ADA319698

Report Date : SEP 1996

Pagination or Media Count : 234

Abstract : Single and two phase fuel injection into compressible flows was studied. Mixing was measured under a variety of injection conditions as governed by injector geometry and fuel chemistry, phase, velocity, temperature and pressure. The impact of flow conditions on the state of mixing was also investigated. Several diagnostic methods were used, including optical diagnostic techniques and mechanical probing. Combinations of mechanical probe measurements were used to calculate such flow properties as Mach number, velocity, static temperature, and species concentration. For mixing studies, both the scalar and vector quantities were measured to assess the Schmidt number effect Information obtained using laser diagnostic techniques was compared with the probe measurements. Results of the comparisons suggest that data obtained through laser diagnostic techniques and probe measurements can complement each other, contributing to the development of a broad understanding of the physical processes of running under a variety of conditions. These basic mixing studies have led to the successful development of several mixing enhancement schemes, which have been tested and reported elsewhere.

Descriptors :   *COMBUSTION, *COMPRESSIBLE FLOW, *MIXING, *FUEL INJECTION, MEASUREMENT, METHODOLOGY, OPTICS, PROBES, TEMPERATURE, MECHANICAL PROPERTIES, OPTIMIZATION, QUANTITY, LASERS, GAS DYNAMICS, CHEMISTRY, FUELS, RAMJET ENGINES, VECTOR ANALYSIS, DIAGNOSIS(GENERAL), MACH NUMBER, INJECTORS, STATICS.

Subject Categories : Fluid Mechanics
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE