2021/01/13 by Daniel Hilger, Norbert Hosters, Hilger, Daniel +7
Engineering · #Computational Engineering #Computational Fluid Dynamics and Aerodynamics #FOS: Computer and information sciences #FOS: Mathematics #Finance #Fluid Dynamics Simulations and Interactions #Lattice Boltzmann Simulation Studies #Numerical Analysis (math.NA) #and Science (cs.CE)
paper · pdf · doi:10.48550/arxiv.2101.05090
openalex publication_date 2021/01/13 · openalex created_date 2022/07/25 · openalex updated_date 2026/07/28
In this work, we present a novel method for the mesh update in flow problems\nwith moving boundaries, the phantom domain deformation mesh update method\n(PD-DMUM). The PD-DMUM is designed to avoid remeshing; even in the event of\nlarge, unidirectional displacements of boundaries. The method combines the\nconcept of two mesh adaptation approaches: (1) The virtual ring shear-slip mesh\nupdatemethod (VR-SSMUM); and (2) the elastic mesh update method (EMUM). As in\nthe VR-SSMUM, the PD-DMUMextends the fluid domain by a phantom domain; the\nPD-DMUM can thus locally adapt the element density. Combined with the EMUM, the\nPD-DMUMallows the consideration of arbitrary boundary movements. In this work,\nwe apply the PD-DMUM in two test cases. Within the first test case, we validate\nthe PD-DMUM in a 2D Poiseuille flow on a moving background mesh. Subsequently\nthe fluid-structure interaction (FSI) problem in the second test case serves as\na proof of concept. More, we stress the advantages of the novel method with\nregard to conventional mesh update approaches.\n