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Proceedings of CHT-17 ICHMT International Symposium on Advances in Computational Heat Transfer
May 28 - June 1, 2017, Napoli, Italy

DOI: 10.1615/ICHMT.2017.CHT-7


ISBN Print: 9781-56700-4618

ISSN: 2578-5486

HEAT TRANSFER CONTROL IN THERMO-MAGNETIC CONVECTION OF PARAMAGNETIC FLUIDS IN LAMINAR, TRANSIENT AND TURBULENT REGIMES

pages 1751-1755
DOI: 10.1615/ICHMT.2017.CHT-7.1870
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ABSTRAKT

The present study deals with combined experimental and numerical investigations of the thermo-magnetic convection (i.e. combined effects of the thermal buoyancy and of the imposed magnetic field gradients) in a differentially heated cubical enclosure filled with a magnetized fluid. We demonstrate that by changing orientation of the imposed magnetic field gradient a dramatic reorganization of the flow, turbulence and thermal structures takes place, resulting in a significant alternation of the wall heat transfer compared to its neutral state (no magnetic field). By selecting a proper working fluids and by applying the state-of-art superconductive magnet that is able to generate magnetic field strengths up to 10 T, we were able to cover an extensive range 105<RaTM<109 of working flow and heat transfer regimes (including the steady and periodic laminar as well as the fully developed turbulent regimes).

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