Titelaufnahme

Titel
Velocity-Pressure Coupling on GPUs
Verfasser/ VerfasserinEmans, Maximilian ; Liebmann, Manfred
Erschienen in
Computing : archives for informatics and numerical computation, Wien [u.a.] : Springer, 1966 - , Jg. 95, H. 1, S. 123-143
ErschienenSpringer
Ausgabe
Accepted version
SpracheEnglisch
DokumenttypAufsatz in einer Zeitschrift
Schlagwörter (EN)Algebraic multigrid / GPU / Fluid dynamics / Finite volumes
ISSN1436-5057
URNurn:nbn:at:at-ubg:3-644 Persistent Identifier (URN)
DOIdoi:10.1007/s00607-012-0228-6 
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Velocity-Pressure Coupling on GPUs [0.4 mb]
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Zusammenfassung (Englisch)

We explore the possibilities to accelerate simulations in computational fluid dynamics by additional graphics processing units (GPUs). By examining some examples of stationary incompressible flows from the industrial practice we demonstrate that the potential speedup obtained by deploying GPU accelerated linear solvers alone is limited if standard segregated algorithms are used. However, recently presented velocitypressure coupling algorithms are an attractive alternative to these segregated algorithms. We present an efficient AMG solver for the coupled linear system of mixed elliptichyperbolic character and show that the GPU-accelerated version of this linear solver accelerates the velocitypressure coupling scheme by almost 50 % compared to a competitive CPU implementation. Compared to standard segregated methods, the computing time of the whole simulation is reduced by up to 75 %.

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