Journal
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
Volume 59, Issue 9, Pages 693-718Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10407782.2011.572758
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Funding
- Centre for Nano Science and Technology, Jadavpur University
- Council of Scientific and Industrial Research (CSIR), Government of India
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Steady-state simulation study of thermomagnetic convection is presented for a square cavity with localized heat-sources. The external magnetic field conforms to Maxwell's equations. Effects of magnetization saturation of the ferrofluid medium on heat transfer enhancement are studied by invoking Langevin's law. Thermal interactions between the heaters and the fluid at convection-dominated regimes are visualized through streamline, heatline, and isotherm plots. The variation of Nu(avg),(heater) is depicted for increasing dipole strength of the magnetic field sources. Fluid-magnetization contours explain the layout of the Kelvin force-field. The positions of the magnets for maximum value of Nu(avg),(heater) are determined. For the same heat generation rate, effects of enclosure dimensions on heat transfer augmentation are studied.
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