Počet záznamů: 1
Octree-generated virtual mesh for improved contact resolution in CFD-Dem coupling
- 1.
SYSNO ASEP 0560841 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV Záznam nebyl označen do RIV Název Octree-generated virtual mesh for improved contact resolution in CFD-Dem coupling Tvůrce(i) Studeník, O. (CZ)
Kotouč Šourek, M. (CZ)
Isoz, Martin (UT-L) ORCIDCelkový počet autorů 3 Zdroj.dok. Topical Problems of Fluid Mechanics 2022. - Praha : Ústav termomechaniky AV ČR, v. v. i., 2022 / Šimurda D. ; Bodnár T. - ISSN 2336-5781 - ISBN 978-80-87012-77-2 Rozsah stran s. 151-158 Poč.str. 8 s. Forma vydání Tištěná - P Akce Topical problems of fluid mechanics 2022 Datum konání 16.02.2022 - 18.02.2022 Místo konání Praha Země CZ - Česká republika Typ akce EUR Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova HFDIB-DEM ; CFD ; DEM ; washcoating ; OpenFOAM Vědní obor RIV BK - Mechanika tekutin Obor OECD Applied mechanics CEP EF15_003/0000493 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UT-L - RVO:61388998 DOI 10.14311/TPFM.2022.021 Anotace The present work is focused on improving the efficiency of a computational fluid dynamics (CFD) – discrete element method (DEM) solver allowing for computations with non-spherical solids. In general, the combination of CFD and DEM allows for simulations of freely moving solid particles within a computational domain containing fluid. The standard approach of CFD-DEM solvers is to approximate solid bodies by spheres, the geometry of which can be fully defined via its radius and center position. Consequently, the standard DEM contact models are based on an overlap depth between particles, which can be easily evaluated for a sphere-sphere contact. However, for a contact between two non-spherical particles, the overlap depth cannot be used and has to be replaced by the more general overlap volume. The precision of the overlap volume computation is (i) crucial for the correct evaluation of contact forces, and (ii) directly dependent on the computational mesh resolution. Still, the contact volume evaluation in DEM for arbitrarily shaped bodies is usually by at least one order of magnitude more demanding on the mesh resolution than the CFD. In order to improve the computational efficiency of our CFD-DEM solver, we introduce the concept of an OCTREEbased virtual mesh, in which the DEM spatial discretization is adaptively refined while the CFD mesh remains unchanged. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2023 Elektronická adresa http://www2.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2022/21-TPFM2022.pdf
Počet záznamů: 1