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Published May 4, 2014 | Version v1
Working paper Open

Application of CFD and CSM Open Source Codes for Solving Multiscale Multiphysics Problems

  • 1. IT4Innovations, VŠB-Technical University of Ostrava (VSB)
  • 1. IT4Innovations, VŠB-Technical University of Ostrava (VSB)

Description

Solution of multiscale and/or multiphysics problems is one of the domains which can most benefit from use of
supercomputers. Those problems are often very complex and their accurate description and numerical solution requires use of
several different solvers. For example problems of Fluid Structure Interaction (FSI) are usually solved using two different
discretization schemes, Finite volumes to solve Computational Fluid Dynamics (CFD) part and Finite elements to solve the
structural part of the problem. This paper summarizes different libraries and solvers used by the PRACE community that are
able to deal with multiscale and/or multiphysic problems such as Elmer, Code_Saturne and Code_Aster, and OpenFOAM.
The main bottlenecks in performance and scalability on the side of Computational Structure Mechanics (CSM) codes are
identified and their possible extension to fulfill needs of future exascale problems are shown. The numerical results of the
strong and weak scalabilities of CSM solver implemented in our FLLOP library are presented.

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Additional details

Funding

PRACE-3IP – PRACE - Third Implementation Phase Project 312763
European Commission