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Parallelization of a DEM/CFD code for the numerical simulation of particle-laden turbulent flows
Zhang, Hao; Trias Miquel, Francesc Xavier; Tan, Y.Q.; Sheng, Y.; Oliva Llena, Asensio
Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics; Universitat Politècnica de Catalunya. CTTC - Centre Tecnològic de la Transferència de Calor
The interaction between a turbulent fluid flow and particle motion is investigated numerically. A complete direct numerical simulation (DNS) is carried out to solve the governing equations of the fluid phase, to investigate the behavior of inter-particle collision and its effects on particle dispersion, the discrete element method (DEM) is employed to calculate the particle motion.The parallelization strategy of the DNS part is based on a domain decomposition method and uses a hybrid MPI+OpenMP approach. On the other hand, the OpenMP is used for the parallelization of DEM: the total number of particles to be tracked are equally distributed among processors. Finally, the method is tested for a turbulent flow through a square duct.
Peer Reviewed
Àrees temàtiques de la UPC::Física::Termodinàmica::Física de la transmissió de la calor
Parallelization
Direct numerical simulation
Discrete element method
Particle-laden turbulence
Fluids -- Models matemàtics
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