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Pore-Scale Simulation for Predicting Material Transport Through Porous Media

[+] Author Affiliations
Goichi Itoh, Jinya Nakamura, Koji Kono

FUJI Research Institute Corporation, Tokyo, Japan

Tadashi Watanabe

Japan Atomic Energy Research Institute, Tokai, Ibaraki, Japan

Hirotada Ohashi, Yu Chen, Shinya Nagasaki

University of Tokyo, Tokyo, Japan

Paper No. ICONE10-22563, pp. 397-404; 8 pages
doi:10.1115/ICONE10-22563
From:
  • 10th International Conference on Nuclear Engineering
  • 10th International Conference on Nuclear Engineering, Volume 4
  • Arlington, Virginia, USA, April 14–18, 2002
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 0-7918-3598-7 | eISBN: 0-7918-3589-8
  • Copyright © 2002 by ASME

abstract

Microscopic models of real-coded lattice gas automata (RLG) method with a special boundary condition and lattice Boltzmann method (LBM) are developed for simulating three-dimensional fluid dynamics in complex geometry. Those models enable us to simulate pore-scale fluid dynamics that is an essential part for predicting material transport in porous media precisely. For large-scale simulation of porous media with high resolution, the RLG and LBM programs are designed for parallel computation. Simulation results of porous media flow by the LBM with different pressure gradient conditions show quantitative agreements with macroscopic relations of Darcy’s law and Kozeny-Carman equation. As for the efficiency of parallel computing, a standard parallel computation by using MPI (Message Passing Interface) is compared with the hybrid parallel computation of MPI-node parallel technique. The benchmark tests conclude that in case of using large number of computing node, the parallel performance declines due to increase of data communication between nodes and the hybrid parallel computation totally shows better performance in comparison with the standard parallel computation.

Copyright © 2002 by ASME

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