Lattice Boltzmann simulation of the cubic magnetoconvection with coupled revised matrix-multiple relaxation time model

Autor:	Sassi Ben Nasrallah, Souheil Elalimi, Mohamed Hamdi
Rok vydání:	2018
Předmět:	Physics Natural convection Prandtl number Lattice Boltzmann methods Mechanics Rayleigh number Condensed Matter Physics Hartmann number Nusselt number Computer Science Applications Magnetic field Physics::Fluid Dynamics symbols.namesake Heat transfer symbols
Zdroj:	Progress in Computational Fluid Dynamics, An International Journal. 18:376
ISSN:	1741-5233 1468-4349
DOI:	10.1504/pcfd.2018.10017954
Popis:	Lattice Boltzmann method (LBM) with revised matrix RM-D3Q19 coupled with multiple relaxation time MRT-D3Q7 model is proposed for the first time to study the effect of external magnetic fields on heat transfer in a cubical cavity subjected to horizontal temperature difference. Heat transfer and flow patterns are predicted for fluid with low Prandtl number ranging from 0.05 to 0.15, a range of Rayleigh number between 103 and 106, the Hartmann number up to 60 while the inclination angle of the magnetic field about the horizontal is between 0° and 360°. Results revealed that heat transfer in the cavity is an increasing function of Rayleigh number and a decreasing function of magnetic strength. Three dimensional effects of magnetic fields are also important and the transversal velocity changed considerably which has a direct manifestation on the overall Nusselt number. This result highlighted that it is possible to magnetically control natural convection.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0346ca5ed4c16d213ec45357f99e9751 https://doi.org/10.1504/pcfd.2018.10017954 Zobrazit plný text záznamu