At the German Aerospace Center (DLR), the parallel simulation systems TAU and TRACE have been developed for the aerodynamic design of aircrafts or turbines for jet engines. Large-scale computing resources allow more detailed numerical investigations with bigger numerical configurations. Up to 50 million grid points in a single simulation are becoming a standard configuration in the industrial design. Both CFD solvers, TAU and TRACE, require the parallel solution of large, sparse real or complex systems of linear equations. For the parallel iterative solution of these equation systems, various block-local preconditioners are compared with global Distributed Schur Complement (DSC) preconditioning methods for real or complex matrix problems. Numerical, performance and scalability results of preconditioned FGMRes algorithms are presented for typical TAU and TRACE problems from external or internal flow simulations on many-core systems together with an analysis of the avantages of the complex problem formulation.


    Access

    Download


    Export, share and cite



    Title :

    Scalable Preconditioned Solvers for Internal and External Flow Computations on Many-Core Systems


    Contributors:

    Conference:

    2011 ; Braunschweig, Deutschland


    Publication date :

    2011


    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




    Scalable Distributed Schur Complement Solvers for Internal and External Flow Computations on Many-Core Architectures

    Basermann, Achim / Kersken, Hans-Peter | German Aerospace Center (DLR) | 2011

    Free access

    Scalable Two-Level Preconditioners for CFD Computations on Many-Core Systems

    Basermann, Achim / Zöllner, Melven | German Aerospace Center (DLR) | 2012

    Free access

    DEFLATED PRECONDITIONED CONJUGATE GRADIENT SOLVERS: EXTENSIONS AND IMPROVEMENTS

    Mut, F. / Aubry, R. / Houzeaux, G. et al. | British Library Conference Proceedings | 2010


    Deflated Preconditioned Conjugate Gradient Solvers: Extensions and Improvements

    Mut, Fernando / Aubry, Romain / Houzeaux, Guillaume et al. | AIAA | 2010


    Parallel Unstructured Three-Dimensional Turbulent Flow Analyses Using Efficiently Preconditioned Newton-Krylov Solvers

    Bonfiglioli, A. / Carpentieri, B. / Campobasso, S. | British Library Conference Proceedings | 2009