Towards a theory of dynamical properties of polydisperse magnetic fluids: Effect of chain-like aggregates / Zubarev AY,Fleischer J,Odenbach S // PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS. - 2005. - V. 358, l. 2-4. - P. 475-491.

ISSN/EISSN:

0378-4371 / 1873-2119

Type:

Article

Abstract:

The rheological properties of dense ferrofluids were studied theoretically as well as experimentally. The experimental results differ strongly from predictions made by classical theories for the dynamical properties of homogeneous ferrocolloids with individual magnetic particles. To explain the experimental results a new theoretical model is suggested. This model takes into account that real systems are polydisperse and that the particles are interacting. The dipole-dipole interaction can lead to the formation of soft chain-like heterogeneous aggregates if sufficiently big particles are present. For small shear rate these aggregates play a principal role for the rheological characteristics of the fluids. In contrast, for high shear rate the aggregates are destroyed and the influence of the individual particles dominates the magnetoviscous behavior. (c) 2005 Elsevier B.V. All rights reserved.

Author keywords:

ferrofluids; aggregates; rheology VISCOSITY; PARTICLES; LIQUIDS; FIELD

DOI:

10.1016/j.physa.2005.02.093

Web of Science ID:

ISI:000232987900018

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	DEC 15
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1873-2119
Keywords-Plus	VISCOSITY; PARTICLES; LIQUIDS; FIELD
Research-Areas	Physics
Web-of-Science-Categories	Physics, Multidisciplinary
Author-Email	Andrey.Zubarev@usu.ru odenbach@zarm.uni-bremen.de
ResearcherID-Numbers	Odenbach, Stefan/D-4542-2009 Zubarev, Adrey/B-4752-2014
Number-of-Cited-References	16
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	14
Journal-ISO	Physica A
Doc-Delivery-Number	980BC