Accession Number : ADA329891

Title :   Modelling Mixing and Reaction in Turbulent Combustion.

Descriptive Note : Final rept. 15 Feb 94-14 Feb 97,

Corporate Author : CORNELL UNIV ITHACA NY

Personal Author(s) : Pope, S. E.

PDF Url : ADA329891

Report Date : 29 JUL 1997

Pagination or Media Count : 144

Abstract : The overall objective of the research project was to develop, test and demonstrate a combined methodology for modelling turbulent combustion. The method was based on the solution by a particle/Monte Carlo method-of a modelled transport equation for the joint probability density function (PDF) of velocity, turbulence frequency, and thermochemical composition. New contributions were made to several aspects of the method. An improved turbulent mixing model (EMST) was developed and demonstrated in turbulent flames. A new model for turbulence frequency, and a wavevector model that is exact for rapid distortions was developed. The PDF methodology was also extended for incorporation in large eddy simulations. Overall, the PDF method was substantially advanced and demonstrated to be an effective approach for calculating the turbulent reactive flows encountered in propulsion devices.

Descriptors :   *TURBULENT FLOW, *COMBUSTION, EDDIES(FLUID MECHANICS), MONTE CARLO METHOD, PROBABILITY DENSITY FUNCTIONS, PROPULSION SYSTEMS, TRANSPORT PROPERTIES, MATHEMATICAL ANALYSIS, FLAMES, EQUATIONS, DISTORTION, HEAT OF COMBUSTION.

Subject Categories : Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE