Title:
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Parallel algorithm for the solution of the Boltzmann transport equation on unstructured meshes
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Author:
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Colomer Rey, Guillem; Borrell Pol, Ricard; Lehmkuhl Barba, Oriol; Pérez Segarra, Carlos David
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics; Universitat Politècnica de Catalunya. CTTC - Centre Tecnològic de la Transferència de Calor |
Abstract:
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The Boltzmann transport equation is solved by means of a parallel explicit algorithm known as parallel sweep, and a source iteration procedure to solve the coupling between different angular directions. Using an explicit solver implies that the nodes have to be visited in a specific order. Factors that influence the scalability of
the algorithm have been analysed, namely the different strategies to group the tasks to
be done at the calculation stage, and how deep should the task graph be worked prior
to the communication stage. Two and three dimensional unstructured meshes have been considered. With relatively small meshes, good weak and strong speedup results are obtained, using up to ≈ 900 processors. |
Subject(s):
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-Àrees temàtiques de la UPC::Física::Termodinàmica::Física de la transmissió de la calor -Parallel BTE solver -Parallel sweep -Unstructured meshes -Transport theory -Transport, Teoria del -- Models matemàtics |
Rights:
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Document type:
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Article - Submitted version Conference Object |
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