Title: | MaMiCo: Non-local means and POD filtering with flexible data-flow for two-way coupled molecular-continuum HPC flow simulation | Authors: | Jarmatz, Piet Maurer, Felix Wittenberg, Helene Neumann, Philipp |
Language: | eng | Issue Date: | Mai-2022 | Document Type: | Article | Journal / Series / Working Paper (HSU): | Journal of computational science | Volume: | 61 | Abstract: | Noise filtering in fluid dynamics enables stable, strongly-coupled molecular-continuum coupling despite potentially high thermal fluctuations. In this extended version of our conference paper “MaMiCo: Non-local Means Filtering with Flexible Data-Flow for Coupling MD and CFD” (ICCS 2021), we apply Non-Local Means filtering (NLM) in a novel space–time formulation to particle data. Our implementation in the Macro–Micro-Coupling tool (MaMiCo) features a flexible filter chain execution for HPC systems. We test it on 3D simulation data with multiple flow scenarios and continuum solvers, including a coupling to OpenFOAM. Our filtering results demonstrate that NLM not only has an excellent signal-to-noise ratio gain when extracting macroscopic flow information from particle ensembles, but also yields benefits for transient two-way coupling. |
Organization Units (connected with the publication): | High Performance Computing | ISSN: | 1877-7503 | Verlags-DOI: | 10.1016/j.jocs.2022.101617 |
Appears in Collections: | 3 - Publication references (without fulltext) |
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