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Article
Kinetic Rates for Gas-Phase Chemistry of Phenolic-Based Carbon Ablator in Atmospheric Air
Journal of Thermophysics and Heat Transfer (2015)
  • Alexandre Martin, University of Kentucky
  • Ioana Cozmuta, NASA Ames Research Center
  • Michael J. Wright, NASA Ames Research Center
  • Iain D. Boyd
Abstract

A comparison between three chemistry models used for the aerothermodynamic modeling of carbon-based phenolic ablative heat shields in atmospheric air is presented. The differences between the models, as well as the results they produced for the boundary-layer composition and prediction of convective and radiative heat fluxes, are put forward. A new model, built by optimizing and reducing a baseline model constructed using kinetic rates from a combustion database, is presented. Some of the important reactions, such as the CN/CO exchange, are highlighted, and their effects on surface heating are discussed. The resulting model comprises an extensive set of reactions that are relevant to carbon-phenolic ablators in high-enthalpy re-entry environments. The analysis presented in this paper shows that this model preserves the important features of the three existing chemistry models while correcting their deficiencies for a more accurate description pertinent to re-entry conditions.

Keywords
  • Kinetic Rates,
  • Gas-Phase Chemistry,
  • Phenolic-Based Carbon Ablator,
  • Atmospheric Air,
  • Aerothermodynamic modeling,
  • Heat fluxes
Publication Date
2015
Citation Information
Alexandre Martin, Ioana Cozmuta, Michael J. Wright and Iain D. Boyd. "Kinetic Rates for Gas-Phase Chemistry of Phenolic-Based Carbon Ablator in Atmospheric Air" Journal of Thermophysics and Heat Transfer (2015)
Available at: http://works.bepress.com/alexandre_martin/27/