Open Source DSMC Chemistry Modelling for Hypersonic Flows

T. J. Scanlon, Craig White, Matthew Borg, Rodrigo C. Palharini, erin farbar, iain boyd, Jason Reese, Richard Brown

Research output: Contribution to journalArticlepeer-review

Abstract

An open source implementation of chemistry modelling for the direct simulation
Monte Carlo (DSMC) method is presented. Following the recent work of Bird [1] an approach known as the quantum kinetic (Q-K) method has been adopted to describe chemical reactions in a 5-species air model using DSMC procedures based on microscopic gas information. The Q-K technique has been implemented within the framework of the dsmcFoam code, a derivative of the open source CFD code OpenFOAM. Results for vibrational relaxation, dissociation and exchange reaction rates for an adiabatic bath demonstrate the success of the Q-K model implementation in dsmcFoam when compared with analytical solutions for both inert and reacting conditions. A comparison is also made between the Q-K and total collision energy (TCE) chemistry approaches for a hypersonic flow benchmark case.
Original languageEnglish
Pages (from-to)1670
Number of pages1680
JournalAIAA Journal
Volume53
Issue number6
DOIs
Publication statusPublished - Nov 2015

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