Hybrid reduced order model for N2-N interactions for application to dissociation and energy transfer processes

Robyn L. MacDonald, Richard L. Jaffe, Marco Panesi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This work presents a general framework for model reduction of non-equilibrium energy transfer and dissociation processes. The multi-group maximum-entropy method is coupled with the quasi-classical trajectory method to directly construct a reduced order model for chemical non-equilibrium. Kinetic data is calculated by applying detailed balance at a microscopic level, overcoming the limitation of calculating recombination kinetic data. This approach enables the construction of a reduced order model for kinetics which bypasses the need to compute state-to-state kinetic data. This physics based reduced order model ensures that an equilibrium distribution is reached given infinite time, while allowing for non-equilibrium distributions during the relaxation and dissociation processes. A proof-of-concept test case demonstrates the applicability of this model by comparison with state-to-state kinetic data for the N2(X1ςg+)-N(4Su) system with excellent agreement.

Original languageEnglish (US)
Title of host publication31st International Symposium on Rarefied Gas Dynamics, RGD 2018
EditorsDuncan Lockerby, David R. Emerson, Lei Wu, Yonghao Zhang
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735418745
DOIs
StatePublished - Aug 5 2019
Event31st International Symposium on Rarefied Gas Dynamics, RGD 2018 - Glasgow, United Kingdom
Duration: Jul 23 2018Jul 27 2018

Publication series

NameAIP Conference Proceedings
Volume2132
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference31st International Symposium on Rarefied Gas Dynamics, RGD 2018
Country/TerritoryUnited Kingdom
CityGlasgow
Period7/23/187/27/18

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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