journal article·2005-03

New transport properties of ferrocolloids: magnetic Soret effect and thermomagnetoosmosis

Elmars Blums

Publisher page

Abstract

The paper deals with critical analysis of experiments on thermodiffusion in ferrocolloids. The observed magnetic Soret effect is significantly stronger than that predicted theoretically. It is shown that the main reason for that is the influence of a magnetic field on mass diffusion. Besides, some measurements are effected by uncontrolled thermal and solutal magnetic convection. Even in porous media, when macroscopic convection is depressed, thermodiffusion can be disturbed by microconvective mass transfer induced by particle magnetophoresis on filter grains.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Field-Flow Fractionation Techniques · Granular flow and fluidized beds · Radioactivity and Radon Measurements

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (14)

Show source-provided references
1. Blums · J. Magn. Magn. Mater. · 1995 · 149 · 11110.1016/0304-8853(95)00350-9 ↗
2. Anderson · Ann. Rev. Fluid Mech. · 1989 · 21 · 6110.1146/annurev.fl.21.010189.000425 ↗
3. Morozov · Lecture Notes Phys. · 2002 · 584 · 36
4. Blums · J. Magn. Magn. Mater. · 1997 · 169 · 22010.1016/S0304-8853(96)00730-5 ↗
5. Voelker · Magnetohydrodynamics · 2001 · 37 · 27410.22364/mhd.37.3.9 ↗
6. Blums · Phys. Fluids · 1998 · 10 · 215510.1063/1.869737 ↗
7. T. Völker, Thermodiffusion in Ferrofluiden, Ph.D. Thesis, Universität Bremen, 2002.10.1016/S0304-8853(02)00728-X ↗
8. G. Demouchy, A. Bourdon, J.C. Bacri, F. Da Cruz, A. Mezulis, E. Blums, in: Proceedings of the International Fourth PAMIR Conference MHD at dawn to 3rd Millennium, Presqu’le de Giens, France, September 18–22, 2000, pp. 433–438.
9. Mezulis · Magnetohydrodynamics · 2003 · 39 · 36910.22364/mhd.39.3.20 ↗
10. Bacri · Phys. Rev. E · 1995 · 52 · 393610.1103/PhysRevE.52.3936 ↗
11. Gershuni · 1972
12. Blums · Magnetohydrodynamics · 2001 · 37 · 18710.22364/mhd.37.1-2.23 ↗
13. E. Blums, G. Kronkalns, M.M. Maiorov, A. Mezulis. J. Magn. Magn. Mater., submitted. doi:10.1016/j.jmmm.2004.11.078.10.1016/j.jmmm.2004.11.078 ↗
14. T. Volker, S. Odenbach, Der magnetische Soret Effekt: Experimentelle Ergebnisse, Abstracts, Fifth Ferrofluid Workshop, Muelheim, FRG, June 25–27, 2000.