Publications
2020 |
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Grosch, Alice; Waldmann, Moritz; Göbbert, Jens Henrik; Lintermann, Andreas A Web-Based Service Portal to Steer Numerical Simulations on High-Performance Computers Proceedings Article In: Samo Mahnič-Kalamiza Tomaž Jarm, Aleksandra Cvetkoska (Ed.): 8th European Medical and Biological Engineering Conference (= EMBEC 2020), IFMBE Proceedings, pp. 57-65, Ljubljana, 2020. Abstract | Links | BibTeX | Tags: Computational Fluid Dynamics, High-performance computing, Lattice-Boltzmann method, Respiratory flows, Service portal @inproceedings{Grosch2021, Benefiting and accessing high-performance computing resources can be quite difficult. Unlike domain scientists with a background in computational science, non-experts coming from, e.g., various medical fields, have almost no chance to run numerical simulations on large-scale systems. To provide easy access and a user-friendly interface to supercomputers, a web-based service portal, which under the hood takes care of authentication, authorization, job submission, and interaction with a simulation framework is presented. The service is exemplary developed around a simulation framework capable of efficiently running computational fluid dynamics simulations on high-performance computers. The framework uses a lattice-Boltzmann method to simulate and analyze respiratory flows. The implementation of such a web-portal allows to steer the simulation and represents a new diagnostic tool in the field of ear, nose, and throat treatment. | |
Lintermann, Andreas; Meinke, Matthias; Schröder, Wolfgang Zonal Flow Solver (ZFS): a highly efficient multi-physics simulation framework Journal Article In: International Journal of Computational Fluid Dynamics, pp. 1-28, 2020, ISSN: 1061-8562. Abstract | Links | BibTeX | Tags: Code coupling, Hierarchical Cartesian meshes, High-performance computing, Multi-physics simulations, Performance analysis @article{Lintermann2020a, Multi-physics simulations are at the heart of today's engineering applications. The trend is towards more realistic and detailed simulations, which demand highly resolved spatial and temporal scales of various physical mechanisms to solve engineering problems in a reasonable amount of time. As a consequence, numerical codes need to run efficiently on high-performance computers. Therefore, the frame- work Zonal Flow Solver (ZFS) featuring lattice-Boltzmann, finite-volume, discontinuous Galerkin, level set, and Lagrange solvers, has been developed. The solvers can be combined to simulate, e.g., quasi-incompressible and compressible flow, aeroacoustics, moving boundaries, and particle dynamics. In this manuscript, the multi-physics implementation of the coupling mechanisms are presented. The parallelization approach, the involved solvers, and their scalability on state-of-the-art heterogeneous high-performance computers are discussed. Various multi-physics applications complement the discussion. The results show ZFS to be a highly efficient and flexible multi-purpose tool that can be used to solve varying classes of coupled problems. |