Modelling Mixing and Reaction in Turbulent Combustion.

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.

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Document Details

Document Type
Technical Report
Publication Date
Jul 29, 1997
Accession Number
ADA329891

Entities

People

  • S. E. Pope

Organizations

  • Cornell University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Chemical Reactions
  • Combustion
  • Computational Fluid Dynamics
  • Computational Science
  • Differential Equations
  • Fluid Dynamics
  • Fluid Flow
  • Large Eddy Simulation
  • Mechanical Phenomena
  • Mechanical Properties
  • Monte Carlo Method
  • Random Variables
  • Reynolds Number
  • Stratified Fluids
  • Turbulence
  • Turbulent Mixing
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Computational Fluid Dynamics (CFD)
  • Fluid Mechanics and Fluid Dynamics.