Numerical simulation of non-isothermal viscoelastic fluid flows using a VMS stabilized finite element formulation
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10.1016/j.jnnfm.2021.104640
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/355902
Tipus de documentArticle
Data publicació2021-10
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada 4.0 Internacional
Abstract
The effect of temperature in viscoelastic fluid flows is studied applying a stabilized finite element formulation based on both a standard and a log-conformation reformulation (LCR), and the Variational Multiscale (VMS) method as stabilization technique. The log-conformation reformulation turns out to be crucial to solve the cases with a high Weissenberg number. Regarding temperature coupling, a two-way coupling strategy is employed: on the one hand, the dependence of viscoelastic fluid parameters on temperature is established, together with the addition of a new term to the energy equation which takes into account the stress work. The formulations and the iterative algorithms are validated in the well-known flow past a cylinder benchmark. Besides, the extension 1:3 case is studied, in which several scenarios are explored varying the values of the main dimensionless numbers that characterize the problem to see how the flow pattern and temperature distribution change along the channel.
CitacióMoreno, L.; Codina, R.; Baiges, J. Numerical simulation of non-isothermal viscoelastic fluid flows using a VMS stabilized finite element formulation. "Journal of non-newtonian fluid mechanics", Octubre 2021, vol. 296, p. 104640:1-104640:18.
ISSN0377-0257
Versió de l'editorhttps://www.sciencedirect.com/science/article/abs/pii/S0377025721001300
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