Multiple-relaxation-time lattice Boltzmann model for generalized Newtonian fluid flows

The generalized Newtonian fluid, as an important kind of non-Newtonian fluids, has been widely used in both science and engineering. In this paper, we present a multiple-relaxation-time lattice Boltzmann model for generalized Newtonian fluid, and validate the model through a detailed comparison with...

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Veröffentlicht in:	Journal of non-Newtonian fluid mechanics 2011-03, Vol.166 (5), p.332-342
Hauptverfasser:	Chai, Zhenhua, Shi, Baochang, Guo, Zhaoli, Rong, Fumei
Format:	Artikel
Sprache:	eng
Schlagworte:	Accuracy Computational methods in fluid dynamics Exact sciences and technology Flows in ducts, channels, nozzles, and conduits Fluid dynamics Fundamental areas of phenomenology (including applications) Generalized Newtonian fluid Laminar flows Laminar flows in cavities Lattices Mathematical analysis Mathematical models Multiple-relaxation-time lattice Boltzmann model Newtonian fluids Non Newtonian fluids Non-newtonian fluid flows Physics Stability
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Beschreibung
Zusammenfassung:	The generalized Newtonian fluid, as an important kind of non-Newtonian fluids, has been widely used in both science and engineering. In this paper, we present a multiple-relaxation-time lattice Boltzmann model for generalized Newtonian fluid, and validate the model through a detailed comparison with analytical solutions and some published results. The accuracy and stability of the present model are also studied, and compared with those of the popular single-relaxation-time lattice Boltzmann model. Finally, the limit and potential of the multiple-relaxation-time lattice Boltzmann model are briefly discussed.
ISSN:	0377-0257 1873-2631
DOI:	10.1016/j.jnnfm.2011.01.002