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ISSN Online: 2377-424X

ISBN CD: 1-56700-226-9

ISBN Online: 1-56700-225-0

International Heat Transfer Conference 13
August, 13-18, 2006, Sydney, Australia

MAGNETICALLY ENHANCED OR SUPPRESSED CONVECTION OF PARAMAGNETIC FLUID IN A CUBE HEATED AND COOLED FROM OPPOSING SIDE WALL

Get access (open in a dialog) DOI: 10.1615/IHTC13.p6.160
9 pages

Resumo

This report aims to study the convection of paramagnetic fluid affected by a strong magnetic field of a super-conducting magnet. The paramagnetic fluid is a mixture of aqueous solution of glycerol (80% in mass) and gadolinium nitrate hexahydrate of 0.8 [mole/kg] with further addition of thermo-chromic liquid crystals for temperature visualization. Fluid is filled in a cubic enclosure heated and cooled from opposing vertical walls and placed in a vertical bore of a magnet. When the enclosure is placed above the centre of the solenoid, Nu = 7.05 at 0 [T] and Ra0 = 1.25 × 105 increases to 12.3 at 5 [T] at the magnet centre. When the enclosure is placed below the centre of the solenoid, Nu = 6.15 at 0 [T] and Ra0 = 1.36 × 105 once decreases to 4.48 at 1 [T] and increases to 10.8 at 5 [T]. Temperature visualization is shown with a 10 [T] magnet.