Development of a solver for fully coupled particle-laden flows and challenges for model order reduction

0551827 - ÚT 2022 eng A - Abstract
Isoz, Martin - Šourek, M. - Krah, P. - Reiss, J.
Development of a solver for fully coupled particle-laden flows and challenges for model order reduction.
[International Conference on Numerical and Symbolic Computation Developments and Applications /5./. 25.03.2021-26.03.2021, Évora]
Keywords : CFD-DEM * OpenFOAM * HFDIB * model order reduction
OECD category: Applied mathematics

Particle-laden flows are present in numerous aspects of day-to-day life ranging from technical applications such as fluidisation or filtration to medicinal problems, e.g. behavior of clots in blood vessels. Standard methods of computational fluid dynamics (CFD) based on shape-conforming domain discretization are usually not well suited for simulations of such problems. This is the case especially, if the solid particles are large enough to affect the fluid flow and distributed densely enough to come in contact both with each other and with the computational domain boundaries. In this work, we present a newly developed finite volume solver for modeling flow-induced movement of arbitrarily-shaped solid particles. The modeling approach is based on a hybrid fictitious domain-immersed boundary method (HFDIB) for inclusion of the solids into the computational domain. The bodies movement and contacts are solved via the discrete element method (DEM). Unfortunately, the coupled HFDIB-DEM model structure causes significant limitations with respect to applications of standard projection-based methods of model order reduction (MOR). In the talk, we give an overview of the new solver implementation an capabilities and comment on the challenges the HFDIB-DEM approach poses for MOR
Permanent Link: http://hdl.handle.net/11104/0327277