Skip to main content
SpringerLink
Log in

Magnetic field effects on mechanical behaviour of ferrosuspensions

  • Published:
Rheologica Acta Aims and scope Submit manuscript

Summary

In a measuring cell of a rotational magnetorheometer a rheological investigation of a number of ferrosuspensions is carried out over wide ranges of their concentration, temperature, intensity and orientation of the magnetic field. The obtained data are correlated by a new universal magnetorheological characteristic invariant for the ferrosuspension type and temperature, intensity and orientation of the external magnetic field.

An experimental investigation is made of peculiarities of the mechanical behaviour of ferrosuspension shear flows in a coaxial cylinder system, with their internal structure dynamically controlled by a rotating magnetic field. Some estimates are made of the momentum transfer mechanism in ferrosuspensions affected by magnetic and shear fields.

Zusammenfassung

In der Meßzelle eines Magneto-Rotationsrheometers wurden rheologische Untersuchungen an einer Reihe von Ferrosuspensionen in einem weiten Bereich von Konzentration und Temperatur, sowie Intensität und Orientierung des Magnetfeldes durchgeführt. Die gewonnenen Daten werden in Form einer universellen magnetorheologischen Charakteristik zusammengefaßt, die sowohl bezüglich des Typs und der Temperatur der Ferrosuspension als auch der Intensität und der Orientierung des äußeren Magnetfeldes invariant ist.

Weiter wurde eine experimentelle Untersuchung der mechanischen Besonderheiten bei Ferrosuspensionen in der Scherströmung eines Couette-Viskosimeters infolge der dynamischen Veränderung ihrer inneren Struktur durch ein rotierendes Magnetfeld durchgeführt. Einige Abschätzungen der Impulsübertragung in Ferrosuspensionen als Funktion des Magnet- und des Scherfeldes sind angegeben.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

Abbreviations

ϕ :

volumetric concentration of the disperse ferrosuspension phase, %

I :

magnetization, T

H :

magnetic field intensity, A/m

δ :

thickness of the ferrosuspension layer under investigation, mm

τ :

shear stress, N/m2

\(\dot \gamma \) :

shear rate, s−1

Ω :

angular velocity of the field, s−1

ω :

angular velocity of the rotor, s−1

i :

current in the inductor windings, A

η :

apparent ferrosuspension viscosity, N ⋅ s/m2

T :

temperature, K

References

  1. Veliev, F. G. Magnitnaya Gidrodynamica, No. 4, 137 (1972).

    Google Scholar 

  2. Middleman, S. The Flow of High Polymers. Continuum and Molecular Rheology (Interscience Publ., New York 1968).

    Google Scholar 

  3. Vinogradov, G. V., A. Ya. Malkin, N. V. Prozorovskaya, V. A. Kargin Dokl. Acad. Nauk SSSR150, 574 (1963).

    Google Scholar 

  4. Kordonskii, V. I., M. Z. Shulman, T. V. Kunevich In: Rheology of Polymer and Disperse Systems and Rheophysics, Part 2. Heat and Mass Transfer Institute, BSSR Acad. Sci. 79 (Minsk 1975).

    Google Scholar 

  5. Belkin, I. M., G. V. Vinogradov, A. I. Leonov Rotational Instruments (Mashinostroyenie Publ., Moscow 1968).

    Google Scholar 

  6. Bibik, E. E. Magnitnaya Gidrodinamika3, 25 (1973).

    Google Scholar 

  7. Kagan, I. Ya., V. G. Rykov, E. I. Yantovskii Magnitnaya Gidrodinamika, No. 2, 135 (1973).

    Google Scholar 

  8. Moscowitz, R., R. E. Rosenweig Appl. Phys. Letters11, 301 (1967).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. The Luikov Heat and Mass Transfer Institute, Byelorussian Academy of Sciences, Minsk, USSR

    Z. P. Shulman, V. I. Kordonskii & S. A. Demchuk

Authors
  1. Z. P. Shulman
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. V. I. Kordonskii
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. S. A. Demchuk
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

With 9 figures and 1 table

Rights and permissions

Reprints and permissions

About this article

Cite this article

Shulman, Z.P., Kordonskii, V.I. & Demchuk, S.A. Magnetic field effects on mechanical behaviour of ferrosuspensions. Rheol Acta 17, 166–171 (1978). https://doi.org/10.1007/BF01517707

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01517707

Keywords

Search

Navigation