| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 663036 | International Journal of Heat and Mass Transfer | 2005 | 8 Pages |
Abstract
Thermomagnetic convection is characterized using scaling arguments. We consider a square enclosure filled with a ferrofluid that is under the influence of an external magnetic field created by a line dipole. The height-averaged Nusselt number scales with the magnetic Rayleigh number as Nu∼Ram0.25. This result is in excellent agreement with predictions obtained from detailed numerical simulations. Use of the Langevin equation of ferrofluid magnetization identifies an optimum enclosure height for which the Nusselt number reaches a maximum value for a given line dipole strength.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Achintya Mukhopadhyay, Ranjan Ganguly, Swarnendu Sen, Ishwar K. Puri,