Title

Heat Transfer Through Convection In A Quasi-One-Dimensional Magnetic Fluid

Keywords

Convection; Convective heat transfer; Magnetic field effect on heat transfer; Magnetic field effect on natural convection; Magnetic field enhanced/inhibited heat transfer; Magnetic fluids

Abstract

A magnetic fluid consists of magnetic nanoparticles suspended in nonmagnetic solvent. The buoyancy-induced natural convection is observed in a quasi-one-dimensional magnetic fluid in a horizontal temperature gradient. The local temperatures across the sample were measured by eight thermal sensors in the sample cell in both zero field and as a function of applied field, which is perpendicular to the gravity. In applied magnetic field and field gradient, it was found that when the field gradient is anti-parallel to the temperature gradient the temperature difference across the whole sample, â̂†T, increases with increasing field and field gradient, indicating the slowing down of the convective heat transfer. ΔT decreases for field gradient parallel to the temperature gradient, suggesting the speeding up the heat transfer process. We will discuss the possible mechanism for these phenomena. The potential applications in controlling heat transfer in fluids with applied fields will be discussed. © 2013 Akadémiai Kiadó, Budapest, Hungary.

Publication Date

8-1-2013

Publication Title

Journal of Thermal Analysis and Calorimetry

Volume

113

Issue

2

Number of Pages

449-452

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1007/s10973-013-3134-z

Socpus ID

84880412094 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84880412094

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