Modeling backward chemical rate processes in the direct simulation Monte Carlo method Journal Article uri icon



  • The direct simulation Monte Carlo (DSMC) method is a general particle based technique for computation of nonequilibrium gas flows. A number of chemistry models have been developed for DSMC that make it possible to analyze high-energy flows including the aerothermodynamics of planetary entry vehicles. In the present work, an important limitation of existing DSMC models for simulating the backward (exothermic) direction of chemical reactions is identified. A new model is proposed to address the problem. Results obtained with the new chemistry model demonstrate the ability to accurately predict backward rate coefficients and chemical composition under equilibrium conditions. Application of the new model to a high-velocity, nonequilibrium flow condition indicates differences in species concentrations in comparison to the existing, physically inaccurate approach for modeling the backward reaction steps.

publication date

  • December 1, 2007

has restriction

  • closed

Date in CU Experts

  • August 13, 2019 12:07 PM

Full Author List

  • Boyd ID

author count

  • 1

Other Profiles

International Standard Serial Number (ISSN)

  • 1070-6631

Electronic International Standard Serial Number (EISSN)

  • 1089-7666

Additional Document Info


  • 19


  • 12