Reaction Cross Sections for Two DSMC Models: Accuracy and Sensitivity Analysis
Abstract
The Quantum Kinetic chemical reaction model proposed by Bird for the direct simulation Monte Carlo method is based on collision kinetics with no assumed Arrhenius-related parameters. It demonstrates an excellent agreement with the best estimates for thermal reaction rates coefficients and with two-temperature nonequilibrium rate coefficients for high-temperature air reactions. This paper investigates this model further, concentrating on the non-thermal reaction cross sections as a function of collision energy, and compares its predictions with those of the earlier total collision energy model, also by Bird, as well as with available quasi-classical trajectory cross section predictions (this paper also publishes for the first time the complete sets of these computed reaction cross sections). A rarefied hypersonic flow over a cylinder is used to examine the sensitivity of the number of exchange reactions to the differences in the two models under a strongly nonequilibrium velocity distribution.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 15, 2011
- Accession Number
- ADA555547
Entities
People
- Fabrizio Esposito
- Ingrid Wysong
- Natalia Gimelshein
- Sergey F. Gimelshein
- William Mckeon
Organizations
- Air Force Research Laboratory