2014-06-04

High-performance Computing for Flows in Porous Media

Prof. Peter Bastian, Ruprecht-Karls-Universität Heidelberg, Interdisziplinäres Zentrum für Wissenschaftliches Rechnen

26 Jun 2014, 16:30–18:00; Location: S4|10-1

Simulation of flow and transport processes in porous media provides a formidable challenge and application field for high-performance computing. Relevant continuum-scale models include partial differential equations of elliptic, parabolic and hyperbolic type which are coupled through highly nonlinear coefficient functions. The multi-scale character and uncertainties in the parameters constitute an additional level of complexity but provide also opportunities for high-performance computing.

This talk will focus on the efficient solution of incompressible two-phase flow with a fully-coupled discontinuous Galerkin (DG) based approach that is comparable in efficiency (measured in accuracy per computation time) to simple cell-centered schemes but offers the opportunity to increase arithmetic intensity substantially in the assemble stage as well as the solve phase. For the fast solution of the arising linear systems a hybrid preconditioner based on subspace correction in the conforming finite element subspace is employed.

In a second example high-order DG methods for density driven flow are investigated with emphasis on scalability w.r.t. the polynomial degree and number of threads on shared memory machines.

Category: CE Seminar

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Technische Universität Darmstadt

Graduate School CE
Dolivostraße 15
D-64293 Darmstadt

Phone+49 6151/16-24401
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OfficeS4|10-322

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