An open-source hybrid CFD-DSMC solver for high speed flows

Daniel Espinoza, Vincent Casseau, Thomas Scanlon, Richard Brown

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

5 Citations (Scopus)
149 Downloads (Pure)


During re-entry, a spacecraft will experience flow conditions ranging from highly rarefied to continuum. To simulate regions in between, a hydrodynamic-molecular gas hybrid solver should be used to provide accuracy and effciency. Currently available hybrid codes are in-house codes or do not provide the capabilities to simulate all of the phenomena a spacecraft will experience during re-entry. An open-source CFD-DSMC hybrid code is being developed within the OpenFOAM framework, coupling the solvers dsmcFoam and hy2Foam. In this paper, comparison between the CFD, DSMC and hybrid codes have been performed for simple cases. The dsmcFoam and the hybrid code have shown to compare satisfactorily.
Original languageEnglish
Title of host publicationProceedings of the 30th International Symposium on Rarefied Gas Dynamics
EditorsHenning Struchtrup, Andrew Ketsdever
Place of PublicationMelville, N.Y.
Number of pages8
Publication statusPublished - 15 Nov 2016
Event30th International Symposium on Rarefied Gas Dynamics - University of Victoria, Victoria BC, Canada
Duration: 10 Jul 201615 Jul 2016

Publication series

NameAIP Conference Proceedings


Conference30th International Symposium on Rarefied Gas Dynamics
CityVictoria BC
Internet address


  • space vehicles
  • flow simulations
  • re-entry
  • highly-rarefied regime
  • continuum
  • hybrid solvers
  • spacecraft
  • OpenFOAM
  • computational fluid dynamics
  • direct simulation Monte Carlo

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