Reduced-order modeling for non-equilibrium air flows

Alessandro Munafò, Simone Venturi, Maitreyee P. Sharma, Marco Panesi

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


This work deals with the development and application of reduced-order models for nonequilibrium hypersonic air flows. Starting from a State-to-State formulation, the reduction of kinetics mechanism to a more tractable form for Computational-Fluid-Dynamics (CFD) applications is realized by grouping the atom/molecule internal states within bins with prescribed population distributions. The group/bin-averaged kinetic parameters (e.g., rate coefficients) are computed in conjunction with Quasi-Classical-Trajectory (QCT) calculations. This allows for treating diatom-diatom systems (e.g., N2-N2) for which a State-to-State method is simply impractical. The proposed physico-chemical models are first compared against State-to-State formulations in zero and one-dimensional configurations to assess their accuracy, and later applied to realistic multi-dimensional simulations to demonstrate their maturity and predictive capabilities.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2020 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105951
StatePublished - 2020
EventAIAA Scitech Forum, 2020 - Orlando, United States
Duration: Jan 6 2020Jan 10 2020

Publication series

NameAIAA Scitech 2020 Forum
Volume1 PartF


ConferenceAIAA Scitech Forum, 2020
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Aerospace Engineering


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