Estimating rheological properties of suspensions formed of arbitrarily-shaped particles via CDF-Dem

0560815 - ÚT 2023 CZ eng C - Conference Paper (international conference)
Kotouč Šourek, M. - Isoz, Martin
Estimating rheological properties of suspensions formed of arbitrarily-shaped particles via CDF-Dem.
Topical Problems of Fluid Mechanics 2022. Praha: Ústav termomechaniky AV ČR, v. v. i., 2022 - (Šimurda, D.; Bodnár, T.), s. 103-110. ISBN 978-80-87012-77-2. ISSN 2336-5781.
[Topical problems of fluid mechanics 2022. Praha (CZ), 16.02.2022-18.02.2022]
R&D Projects: GA MŠMT(CZ) EF15_003/0000493
Institutional support: RVO:61388998
Keywords : CFD-DEM * HFDIB * suspension rheology * OpenFOAM
OECD category: Applied mechanics
http://www2.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2022/15-TPFM2022.pdf

In recent years, new methods combining computational fluid dynamics (CFD) and discrete element method (DEM) have been intensively studied. Usually, these methods are focused on simulations of spherical particles. Nevertheless, this is inadequate for a simulation of a common suspension, the rheology of which is affected by particle shapes. In this work, we leverage the capabilities of an in-house developed CFD-DEM solver to simulate suspensions formed of arbitrarily-shaped particles. Specifically, we simulate a rheological measurement to estimate the suspension viscosity. The CFD-DEM estimates are in very good agreement with available experimental data and correlations proving the new solver capabilities regarding firstprinciples-based simulations of complex non-Newtonian suspension behaviour. The practical potential of suspension simulation is illustrated in a numerical study of the washcoating process in the preparation of a catalytic filter for automotive exhaust gas after-treatment.
Permanent Link: https://hdl.handle.net/11104/0334780