Finite element model of magnetoconvection of a ferrofluid

Combined natural and magnetic convective heat transfer through a ferrofluid in a cubic enclosure is simulated numerically. The momentum equation includes a magnetic term that arises when a magnetic fluid is in the presence of a magnetic field gradient and a temperature gradient. In order to validate...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2003-06, Vol.262 (2), p.269-279
Main Authors: Snyder, Suzanne M., Cader, Tahir, Finlayson, Bruce A.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Ferrofluid
Heat transfer
Magnetic liquids
Magnetic properties and materials
Magnetomechanical and magnetoelectric effects, magnetostriction
Natural convection
Physics
Studies of specific magnetic materials
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Summary:Combined natural and magnetic convective heat transfer through a ferrofluid in a cubic enclosure is simulated numerically. The momentum equation includes a magnetic term that arises when a magnetic fluid is in the presence of a magnetic field gradient and a temperature gradient. In order to validate the theory, the wall temperature isotherms and Nusselt numbers are compared to experimental work of Sawada et al. (Int. J. Appl. Electromagn. Mater. 4 (1994) 329). Results are obtained using standard computational fluid dynamics codes, with modifications to account for the Langevin factor when needed. The CFD code FIDAP uses the finite element method, sometimes with a user-defined subroutine. The CFD code FEMLAB uses the finite element method with a user-supplied body force.
ISSN:0304-8853
DOI:10.1016/S0304-8853(02)01502-0