Theories of Turbulent Combustion in High Speed Flows

Abstract

This research involves theoretical studies of the chemical and fluid- mechanical phenomena which make turbulent combustion in high-speed flows different from such combustion in low-speed flows. Finite-rate chemistry plays a significant role in high-speed flows because of the small ratios of flow times to chemical times. The studies address ignition and extinction phenomena in nonpremixed turbulent combustion of hydrogen-air systems by both numerical and asymptotic methods. Attention also is paid to effects of compressibility in high-speed turbulent combustion, with consideration given to interdispersal configurations of shocklets and flamelets. Efforts are made to provide a firmer foundation for the modeling of high-speed turbulent reacting flows, to aid in the development of a formulation which gives results that can be compared with experiments on turbulent combustion.

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Document Details

Document Type
Technical Report
Publication Date
May 25, 1994
Accession Number
ADA280933

Entities

People

  • F. A. Williams
  • P. A. Libby

Organizations

  • University of California, San Diego

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Chemical Kinetics
  • Chemical Reaction Properties
  • Chemistry
  • Combustion
  • Equations
  • Extinction
  • Fluid Dynamics
  • Fluid Mechanics
  • Hydrogen
  • Ignition
  • Mechanical Phenomena
  • Mechanics
  • Numerical Analysis
  • Steady State
  • Strain Rate
  • Turbulence
  • Turbulent Diffusion

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Fluid Mechanics and Fluid Dynamics.
  • Theoretical Analysis.