Improved Kinetic Models for High-Speed Combustion Simulation

Abstract

Report developed under an STTR contract. The overall goal of this STTR project has been to improve the realism of chemical kinetics in computational fluid dynamics modeling of hydrocarbon-fueled scramjet combustors. A new, pressure-dependent detailed chemical kinetic model for a JP-8 surrogate has been created. Extinction strain rate measurements have been performed with an opposed-jet burner at subatmospheric conditions for a variety of fuels, namely: methane, ethylene, n-heptane, Jet A, n-decane, trimethylbenzene, and blends of n-decane and trimethylbenzene. Skeletal and quasi-steady-state (QSS) reduced mechanisms have been created based on the new mechanism and mechanisms from the literature for ethylene, JP-8, and n-decane. Parallel strategies for the in situ adaptive tabulation (ISAT) algorithm have been implemented and tested. Reduced mechanisms and ISAT have been demonstrated in the CFD++ and VULCAN CFD codes.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2008
Accession Number
ADA488176

Entities

People

  • A. F. Sarofim
  • C. J. Montgomery
  • E. M. Fisher
  • F. C. Gouldin
  • J. K. Gritton
  • J. W. Bozzelli
  • M. J. Bockelie
  • Qing Tang
  • S. Chakravarthy

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alkanes
  • Alkenes
  • Chemical Compounds
  • Chemical Kinetics
  • Chemical Reaction Properties
  • Chemical Reactions
  • Chemical Synthesis
  • Chemistry
  • Combustion
  • Computational Fluid Dynamics
  • Computational Science
  • Fluid Dynamics
  • Hydrocarbon Fuels
  • Ignition Lag
  • Measurement
  • Organic Chemistry

Readers

  • Combustion science or combustion engineering.
  • Computational Fluid Dynamics (CFD)
  • Petroleum Engineering