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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.11 [2004] >
IJEMS Vol.11(4) [August 2004] >
| Title: | Magnetic action on convection and heat transfer in ferrofluid |
| Authors: | Bozhko, A A
Putin, G F |
| Issue Date: | Aug-2004 |
| Publisher: | CSIR |
| IPC Code: | Int. Cl.7 H05B 3/00 |
| Abstract: | The interplay of
buoyancy and thermo-magnetic convection mechanisms are investigated in a
horizontal ferrofluid layer heated from one wide side and cooled from another
in the presence of external uniform transversal magnetic field. The influence
of gravitational settling of magnetic particles and their aggregates on heat
transfer and convection instability is also considered. The ferro-colloids with
different concentrations of magnetic phase are employed for the control of
driving magnetic forces. It is shown that in concentrated colloid the driving
forces prevail over suppress ones, but in weak concentrated colloid the
gradients of density due to gravity sedimentation of particles overwhelm
convection stirring. It is important that thermo-magnetic convection mechanism
allows strengthening of heat transfer in ferrofluid three times. |
| Page(s): | 309-314 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.11(4) [August 2004]
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