Numerical Investigation of Turbulent Flame Sheets

Abstract

Direct numerical simulations of turbulence are being performed to study fundamental processes of turbulent combustion. In the flame-sheet regime of turbulent premixed combustion an important process is the stretching and bending of the surface by the turbulence. These processes have been comprehensively studied for material surfaces, and a similar study for propagating surfaces is nearing completion. A new closure methodology recently proposed by Kraichnan holds much promise for turbulent reacting flows. An analytic solution to the model equations has been obtained; and it is found that the results are in remarkable agreement with those from our earlier direct numerical simulations. Keywords: Turbulent flames, Premixed flames, Turbulence simulations, Surfaces.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1990
Accession Number
ADA218553

Entities

People

  • Stephen B. Pope

Organizations

  • Cornell University

Tags

Communities of Interest

  • Human Systems

DTIC Thesaurus Topics

  • Agreements
  • Availability
  • Classification
  • Combustion
  • Curvature
  • Diffusion
  • Diffusion Coefficient
  • Equations
  • Fluid Dynamics
  • Fluid Mechanics
  • Mechanics
  • Security
  • Shape
  • Simulations
  • Statistics
  • Students
  • Turbulence

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Computational Modeling and Simulation
  • Fluid Dynamics.