Viscoelastic properties of ferrofluids / Chirikov D. N.,Fedotov S. P.,Iskakova L. Yu.,Zubarev A. Yu. // PHYSICAL REVIEW E. - 2010. - V. 82, l. 5, 1.

ISSN/EISSN:

1539-3755 / нет данных

Type:

Article

Abstract:

The paper deals with theoretical study of non linear viscoelastic phenomena in ferrofluids placed in magnetic field. Our attention is focused on the study of nonstationary flow and Maxwell-like relaxation of the macroscopical viscous stress after alternation of the shear rate. We propose that these phenomena can be explained by finite rate of evolution of chainlike aggregates, consisting of the ferrofluid particles. Statistical model of the chains growth-disintegration is suggested. In this model the chain-single particle mechanism of the chains evolution is considered, the effects of the chain-chain interaction are ignored. The proposed model allows us to estimate the time-dependent function of distribution over number of particles in the chain. Having determined this function and using methods of hydromechanics of ferrofluids with chainlike aggregates, we have studied evolution of the ferrofluid viscosity after stepwise alternation of the fluid shear rate. The estimated time of relaxation is in a reasonable agreement with experimental results. Thus, our analysis shows that the observed macroscopical viscoelastic phenomena in ferrofluids can be provided by evolution of the chain ensemble.

Author keywords:

RHEOLOGICAL PROPERTIES; DYNAMICAL PROPERTIES; MAGNETIC LIQUIDS; BROWNIAN-MOTION; SUSPENSIONS; PARTICLES; FLUIDS

DOI:

10.1103/PhysRevE.82.051405

Web of Science ID:

ISI:000284259300004

Соавторы в МНС:

Другие поля

Поле	Значение
Month	NOV 16
Publisher	AMER PHYSICAL SOC
Address	ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Language	English
Article-Number	051405
Keywords-Plus	RHEOLOGICAL PROPERTIES; DYNAMICAL PROPERTIES; MAGNETIC LIQUIDS; BROWNIAN-MOTION; SUSPENSIONS; PARTICLES; FLUIDS
Research-Areas	Physics
Web-of-Science-Categories	Physics, Fluids \& Plasmas; Physics, Mathematical
ResearcherID-Numbers	Zubarev, Adrey/B-4752-2014 Fedotov, Sergei/H-5880-2012
Funding-Acknowledgement	Russian Ministry of Education {[}2.1.1/2571, 2.1.1/1535]; Russian Federal Target Programs {[}02.740.11.0202, 02-740-11-5172, NK-43P(4), GK 330]; {[}RFFI 10-02-00034]; {[}10-01-96002-Ural]; {[}10-02-96001-Ural]
Funding-Text	This work has been done under the financial support of the Russian Ministry of Education, Grants No. 2.1.1/2571 and No. 2.1.1/1535, Russian Federal Target Programs 02.740.11.0202, 02-740-11-5172, NK-43P(4), GK 330; Grants No. RFFI 10-02-00034, No. 10-01-96002-Ural, and No. 10-02-96001-Ural.
Number-of-Cited-References	29
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	17
Journal-ISO	Phys. Rev. E
Doc-Delivery-Number	680TY