Coarse grain model for energy transfer and dissociation

Robyn L. Macdonald, Marco Panesi

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


Recent work in the aerothermodynamics community has focused on the development of reduced-order non-equilibrium models which avoid the conventional assumptions found in multi-temperature models, and the prohibitive cost of State-to-State (StS) models. The objective of this work is to present and validate a framework for constructing a reduced order model by coupling the coarse grain model for model reduction with scattering calculations using the Quasi-Classical Trajectory method. The resulting Maximum-Entropy Quasi-Classical Trajectory (ME-QCT) framework provides a general technique for determining the kinetic data required for the coarse grain model, using a grouping scheme and order of reconstruction as the only model parameters. Validation of the ME-QCT method with a system with known StS kinetics confirms the ME-QCT method as an alternative approach to constructing reduced order models while highlighting the drawbacks of constructing reduced order models using endothermic kinetic data.

Original languageEnglish (US)
Title of host publicationAIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105241
StatePublished - 2018
EventAIAA Aerospace Sciences Meeting, 2018 - Kissimmee, United States
Duration: Jan 8 2018Jan 12 2018

Publication series

NameAIAA Aerospace Sciences Meeting, 2018


OtherAIAA Aerospace Sciences Meeting, 2018
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Aerospace Engineering


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