Forest of octree DSMC simulations of flow through porous media

Revathi Jambunathan, Deborah A. Levin

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

Abstract

In this work, a linear space filling Morton Z-curve is employed to represent the three dimensional octree structure in an array. The advantages and implementation of this linearized octree for the Direct Simulation Monte Carlo (DSMC) method is demonstrated. A hybrid MPI-CUDA multi-GPU solver is used to model gas flow through two types of immersed bodies, a fractal-like spherical aggregate and a fibrous microstructure of a Morgan carbon Felt material. The permeability of this material is calculated by modeling the diffusion of argon gas and the calculated continuum permeability values match very well with other published data. Strong scaling has shown that the multi-GPU octree-based DSMC solve is 85% efficient with 16 GPUs for a large-scale problem.

Original languageEnglish (US)
Title of host publication30th International Symposium on Rarefied Gas Dynamics, RGD 2016
EditorsHenning Struchtrup, Andrew Ketsdever
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735414488
DOIs
StatePublished - Nov 15 2016
Event30th International Symposium on Rarefied Gas Dynamics, RGD 2016 - Victoria, Canada
Duration: Jul 10 2016Jul 15 2016

Publication series

NameAIP Conference Proceedings
Volume1786
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other30th International Symposium on Rarefied Gas Dynamics, RGD 2016
CountryCanada
CityVictoria
Period7/10/167/15/16

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Jambunathan, R., & Levin, D. A. (2016). Forest of octree DSMC simulations of flow through porous media. In H. Struchtrup, & A. Ketsdever (Eds.), 30th International Symposium on Rarefied Gas Dynamics, RGD 2016 [050009] (AIP Conference Proceedings; Vol. 1786). American Institute of Physics Inc.. https://doi.org/10.1063/1.4967559