Abstract
The description of the parallel solver of the Particle Finite Element Method, 2nd generation (PFEM-2), is given. Strategies for the parallelization of both mesh-related and particle-related substeps are outlined. The software implementation is based on the open-source FEM code deal.II. The parallel solution of incompressible Navier–Stokes equations with the excluded convective term is performed with the out-of-box tools of deal.II using additional libraries such as Trilinos and p4est. Several MPI-based subroutines are developed for particle transport processing, as well as for particle/mesh field projection operations. The presented PFEM-2 solver allows for simulating convection-dominated flows with a high CFL number on relatively coarse meshes. The submesh resolution of the velocity field is maintained by particles. The results of simulation and speed-up of computations for test problems using multi-core/multi-processor systems are shown.
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Acknowledgement
Work of Ilia Marchevsky is supported by the Russian Science Foundation (proj. 17-79-20445).
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Popov, A., Marchevsky, I. (2022). MPI-Based PFEM-2 Method Solver for Convection-Dominated CFD Problems. In: Sokolinsky, L., Zymbler, M. (eds) Parallel Computational Technologies. PCT 2022. Communications in Computer and Information Science, vol 1618. Springer, Cham. https://doi.org/10.1007/978-3-031-11623-0_18
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