Accession Number:

AD1036614

Title:

DSMC Modeling of Flows with Recombination Reactions

Descriptive Note:

Journal Article

Corporate Author:

Air Force Research Laboratory (AFMC) AFRL/RQRC Edwards AFB United States

Personal Author(s):

• Gimelshein, S.
• Wysong,I.

Report Date:

2017-06-23

Pagination or Media Count:

12.0

Abstract:

An empirical microscopic recombination model is developed for the direct simulation Monte Carlo method that complements the extended weak vibrational bias model of dissociation. The model maintains the correct equilibrium reaction constant in awide range of temperatures by using the collision theory to enforce the number of recombination events. It also strictly follows the detailed balance requirement for equilibrium gas. The model and its implementation are verified with oxygen andnitrogen heat bath relaxation and compared with available experimental data on atomic oxygen recombination in argon and molecular nitrogen.

Descriptors:

• chemical reactions
• monte carlo method
• gas flow
• recombination reactions
• oxygen
• nitrogen

Subject Categories:

• Statistics and Probability
• Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE