Evaluation of DSMC Dissociation Models through Comparison to Measured Cross Sections

Abstract

Recent measurements of collision-induced dissociation (CID) cross sections for Ar2(+)-Ar collisions for vibrationally cold and hot cases are utilized to test and compare several CID models that have been proposed for the direct simulation Monte Carlo (DSMC) technique. The idea that the CID process is strongly favored by vibrational energy is discussed relative to the various models. The Ar data do not show any vibrational favoring of the CID cross sections. It is shown that some DSMC CID models have much more physically realistic behavior in terms of their cross sections than others.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 16, 2001
Accession Number
ADA410919

Entities

People

  • Iain D. Boyd
  • Ingrid J. Wysong
  • Rainer A. Dressler
  • Y. H. Chiu

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Chemical Reaction Properties
  • Chemical Reactions
  • Diatomic Molecules
  • Dissociation
  • Energy
  • Energy Transfer
  • Gas Dynamics
  • Heat Transfer
  • Ionization
  • Kinetic Energy
  • Measurement
  • Military Research
  • Monte Carlo Method
  • Rarefied Gas Dynamics
  • Scattering

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Molecular Photonics/Laser Physics