Název:
Numerical tests of vanishing diffusion stabilization in Oldroyd-B fluid flow simulations
Autoři:
Pires, M. ; Bodnár, Tomáš Typ dokumentu: Příspěvky z konference Konference/Akce: Topical Problems of Fluid Mechanics 2021, on-line (CZ), 20210217
Rok:
2021
Jazyk:
eng
Abstrakt: This work presents some numerical tests of finite element solution of incompressible Oldroyd-B fluids flows, using different types of numerical stabilization. In this study the diffusive term (Laplacian of extra stress) is added to the tensorial constitutive relation where it is multiplied by a coefficient, that is variable in time. The goal is to make this diffusion coefficient vanish in time, so that the final solution remains unaffected by the added diffusion term. A series of numerical tests was performed for the steady two-dimensional Oldroyd-B fluid flow in corrugated channel (tube) to compare different versions of the vanishing stabilization terms and assess their efficiency in enforcing the solution convergence, without affecting the final steady state.
Klíčová slova:
finite element method; numerical stabilization; oldroyd-B fluid; stress diffusion Číslo projektu: GA19-04243S (CEP) Poskytovatel projektu: GA ČR Zdrojový dokument: Proceedings of Topical Problems of Fluid Mechanics 2021, ISBN 978-80-87012-76-5, ISSN 2336-5781 Poznámka: Související webová stránka: https://doi.org/10.14311/TPFM.2021.014
Instituce: Matematický ústav AV ČR
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Informace o dostupnosti dokumentu:
Dokument je dostupný v repozitáři Akademie věd. Původní záznam: http://hdl.handle.net/11104/0329272