Parallel algorithm for the solution of the Boltzmann transport equation on unstructured meshes
Document typeConference lecture
Rights accessOpen Access
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.
CitationColomer, G. [et al.]. Parallel algorithm for the solution of the Boltzmann transport equation on unstructured meshes. A: International Conference on Parallel Computational Fluid Dynamics. "Parallel CFD 2011 : 23rd International Conference on Parallel Computational Fluid Dynamics". Barcelona: 2011, p. 1-5.