Title:	Numerical and experimental prediction of free surface flow of shear-thinning fluids
Authors:	Lobovský, Libor Bublík, Ondřej Heidler, Václav Vimmr, Jan
Citation:	LOBOVSKÝ, L., BUBLÍK, O., HEIDLER, V., VIMMR, J. Numerical and experimental prediction of free surface flow of shear-thinning fluids. Computers & FLUIDS, 2021, roč. 225, č. 15 July 2021, s. 1-11. ISSN 0045-7930.
Issue Date:	2021
Publisher:	Elsevier
Document type:	článek article
URI:	2-s2.0-85105588986 http://hdl.handle.net/11025/44972
ISSN:	0045-7930
Keywords in different language:	Lattice Boltzmann method;Non-Newtonian fluid;Power-law model;Cross fluid;Free surface flow;Gravity casting
Abstract in different language:	Within this study, a prediction of free surface flow during the gravity casting of shear-thinning fluids is of interest. An experimental test setup which enables analysis of the casting flow by means of opti- cal measurements is designed and an in-house computational fluid dynamics solver based on the lattice Boltzmann method is implemented. The model of isothermal free surface flow of non-Newtonian incom- pressible fluid is considered. In particular, the study focuses on liquids which rheological properties can be idealised by the power-law model and its modifications. Parameters of the non-Newtonian models are identified based on the rheological measurements of the applied fluid samples. The gravity casting flow is examined both experimentally and numerically, while the experiments provide a reference set of data for validation of the implemented lattice Boltzmann algorithm. The computational results indicate that the algorithm is capable of resolving well the studied flow for computational grids with low spatial resolution.
Rights:	Plný text není přístupný. © Elsevier
Appears in Collections:	Články / Articles (NTIS) Články / Articles (KME) OBD

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