A parallel algorithm for flux-based bounded scalar Re-distribution

0560814 - ÚT 2023 CZ eng C - Conference Paper (international conference)
Isoz, Martin - Plachá, M.
A parallel algorithm for flux-based bounded scalar Re-distribution.
Topical Problems of Fluid Mechanics 2022. Praha: Ústav termomechaniky AV ČR, v. v. i., 2022 - (Šimurda, D.; Bodnár, T.), s. 87-94. 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 * OpenFOAM * scalar redistribution
OECD category: Applied mechanics
http://www2.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2022/13-TPFM2022.pdf

Let us assume a bounded scalar function ? : Q = I × ? ? ?0, 1?, I ? R, ? ? R3, where Q is an open bounded domain and its discrete counterpart ?h defined on a computational mesh Qh = Ih × ?h. The problem of redistribution of ?h over ?h ensuring the scalar boundedness while maintaining the invariance of R ?h ?h dV is surprisingly frequent within the field of computational fluid dynamics (CFD). The present contribution is motivated by the case arising from coupling Lagrangian particle tracking and particle deposition within ? h with Eulerian CFD computation. We propose an algorithm for ?h redistribution that is (i) based on fluxes over the computational cells faces, i.e. suitable for finite volume (FV) computations, (ii) localized, meaning that a cell ?h P with ?hP > 1 affects only its closest neighbors with ?h < 1, and (iii) designed for parallel computations leveraging the standard domain decomposition methods.
Permanent Link: https://hdl.handle.net/11104/0334781