Transport Algorithms for Methane Flames

Abstract

The effects of three different methods of approximating multispecies transport phenomena in models of premixed, laminar, steady-state flames have been studied. The most precise, the most simple and a compromise transport algorithm were used to model methane-oxygen flames at one atmosphere with diluents of nitrogen, argon or helium. The thermodynamic and Lennard-Jones (Stockmayer) coefficients for individual species were held fixed together with the kinetic network and rate coefficients. ONly the computational algorithms were changed. Within factors of 10-20% we found that the computed flame speeds and species and temperature profiles were independent of the algorithm employed. Since we have previously reported a similar independence for hydrogen-oxygen- nitrogen flames, we infer that this result is a general one.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1983
Accession Number
ADA133213

Entities

People

  • Joseph M. Heimerl
  • Terence P. Coffee

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Chemical Engineering
  • Chemical Kinetics
  • Chemical Reactions
  • Chemistry
  • Coefficients
  • Combustion
  • Computational Science
  • Diffusion Coefficient
  • Elements
  • Jet Propulsion
  • Military Research
  • Steady State
  • Temperature Gradients
  • Thermal Conductivity
  • Thermal Diffusion
  • Transport Properties

Readers

  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Combustion science or combustion engineering.

Technology Areas

  • AI & ML
  • AI & ML - Bayesian Inference
  • AI & ML - Machine Learning Algorithms