Development of an AMR octree DSMC approach for shock dominated flows

Saurabh S. Sawant, Burak Korkut, Ozgur Tumuklu, Deborah A. Levin

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

Abstract

Key strategies used in the development of a scalable, three-dimensional direct simu-lation Monte Carlo (DSMC) program are described. The code employs an Octree based adaptive mesh refinement (AMR) that gives flexibility in capturing multiscale physics. It is coupled with a robust cut-cell algorithm to incorporate complex triangulated geome-tries. With the use of distributed memory systems and Message-Passing-Interface (MPI) for communication, the code is highly scalable. The paper explains special considerations required for embedded geometries in parallel environment. An efficient algorithm is men-tioned that allows checking of particle-surface interaction only if they are close enough to the geometry. The code employs Borgnakke-Larsen continuous relaxation model to simu-late inelastic collisions of diatomic molecules. Finally, it has been validated by simulating hypersonic flow of argon and nitrogen over a hemisphere and double-wedge configuration and is compared with the results obtained from the SMILE code.

Original languageEnglish (US)
Title of host publication53rd AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624103438
DOIs
StatePublished - Jan 1 2015
Event53rd AIAA Aerospace Sciences Meeting, 2015 - Kissimmee, United States
Duration: Jan 5 2015Jan 9 2015

Publication series

Name53rd AIAA Aerospace Sciences Meeting

Other

Other53rd AIAA Aerospace Sciences Meeting, 2015
CountryUnited States
CityKissimmee
Period1/5/151/9/15

ASJC Scopus subject areas

  • Aerospace Engineering

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  • Cite this

    Sawant, S. S., Korkut, B., Tumuklu, O., & Levin, D. A. (2015). Development of an AMR octree DSMC approach for shock dominated flows. In 53rd AIAA Aerospace Sciences Meeting [AIAA 2015-0070] (53rd AIAA Aerospace Sciences Meeting). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2015-0070