HPC Fluid Flow Simulations in Porous Media Geometries

M. Lieb, M. Mehl, T. Neckel, K. Unterweger

Research output: Contribution to conferencePaperpeer-review

Abstract

The simulation of flows in porous media on the microscale level requires a high number of unknowns to resolve the geometry of the fissures in-between the sand grains. For the geometric representation of the sand grains we use fracture network-like structures in 2D and sphere packings in 3D. These geometries are created with an in-house scenario generator, based on a modified and extended version of the Lubachevsky-Stillinger algorithm in 3D. The incompressible Navier-Stokes flow solver of the PDE framework Peano is used to compute the overall flow through the reference volume. The throughput results allow, in combination with suitable criteria, for the estimation of the necessary resolution of a simulation setup. Highly parallel runs have been performed with several thousands of compute nodes on a HPC system showing good scalability results even for this kind of unbalanced geometry data.

Original languageEnglish
StatePublished - 2012
Event7th International Conference on Computational Fluid Dynamics, ICCFD 2012 - Big Island, United States
Duration: 9 Jul 201213 Jul 2012

Conference

Conference7th International Conference on Computational Fluid Dynamics, ICCFD 2012
Country/TerritoryUnited States
CityBig Island
Period9/07/1213/07/12

Keywords

  • Adaptive grids
  • Cartesian grids
  • Computational fluid dynamics
  • Geometry generation
  • Hpc
  • Porous media

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