Modelling Mixing and Reaction in Turbulent Combustion.
Final rept. 15 Feb 94-14 Feb 97,
CORNELL UNIV ITHACA NY
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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 particleMonte 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.
- Combustion and Ignition