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http://nopr.niscair.res.in/handle/123456789/29664
Title: | Magnetizable fluid behaviour with effective positive, zero or negative dynamic viscosity |
Authors: | Zahn, Markus Pioch, Loretta L |
Issue Date: | Dec-1998 |
Publisher: | NISCAIR-CSIR, India |
Abstract: | Analyses and measurement have shown anomalous
behaviour of ferrofluids in ac magnetic fields, whereby in a rotating magnetic
field the ferrofluid can be pumped but the flow direction can reverse as a
function of magnetic field amplitude, frequency, and direction. This anomalous
behaviour is investigated using the governing fluid mechanical linear and
angular momentum conservation equations including non-symmetric viscous and
Maxwell stress tensors. Here, a simple case has been examined where applied
magnetic field components along and transverse to the duct axis are spatially
uniform and vary sinusoidally with time. In the uniform magnetic field the
magnetization characteristic depends on fluid spin velocity but does not depend
on fluid flow velocity. The magnetization force density along the duct axis is
zero while the magnetic torque density is non-zero as ![]() ![]() |
Page(s): | 400-410 |
URI: | http://hdl.handle.net/123456789/29664 |
ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
Appears in Collections: | IJEMS Vol.05(6) [December 1998] |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
IJEMS 5(6) 400-410.pdf | 635.74 kB | Adobe PDF | View/Open |
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