Prediction of Combustion Instability with Detailed Chemical Kinetics

Abstract

Combustion instability in an unstable single element rocket chamber using methane as the fuel is computationally studied. Effects of the kinetics mechanism are examined by comparing the results using a single step global mechanism and a detailed mechanism with 32 species and 177 reactions. Significant differences between the two predictions are identified including the amplitude of the unsteady pressure oscillations, and more importantly, the underlying mechanisms responsible for driving the combustion instabilities.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2014
Accession Number
ADA613690

Entities

People

  • Swanand V. Sardeshmukh
  • Venkateswaran Sankaran
  • William E. Anderson Lmatthew E.

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Amplitude
  • Boundaries
  • Chemical Kinetics
  • Chemistry
  • Combustion
  • Combustion Products
  • Combustors
  • Dynamics
  • Frequency
  • Fuel Consumption
  • Ignition Lag
  • Instability
  • Kinetics
  • Three Dimensional
  • Turbulent Mixing

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Computational Fluid Dynamics (CFD)
  • Control Systems Engineering.