Thermophysical properties and rheological behavior of electro-rheological fluids at different temperatures

Evguenia V. Korobko; Yulia O. Korobko

doi:10.1117/12.384593

27 April 2000 Thermophysical properties and rheological behavior of electro-rheological fluids at different temperatures

Evguenia V. Korobko, Yulia O. Korobko

Author Affiliations +

Proceedings Volume 3989, Smart Structures and Materials 2000: Damping and Isolation; (2000) https://doi.org/10.1117/12.384593
Event: SPIE's 7th Annual International Symposium on Smart Structures and Materials, 2000, Newport Beach, CA, United States

Abstract

Fluid disperse systems, sensitive to the external electric field-electrorheological fluids, are finding increasing use in various areas of industry and technology. Their physicomechanical, electrophysical characteristics determine the valuable specific properties of the materials with assigned structure, obtainable with everwide use of electric fields, which makes it possible to substantially enhance efficiency and productiveness of technological processes and to improve the control of operational regimes of the equipment which employ fluid disperse media. The present investigations has been undertaken with the aim of studying thermophysical properties and rheophysical behavior of low-concentration ER- fluid (diatomite in transformer oil) at different temperatures. It was shown that the electric field, which changes considerably the structure of electrorheological fluid, influences effective thermal conductivity and diffusivity coefficients. Their increase with electric field intensity and the increase of the effective viscosity with temperature are connected with the increase of the conductive component of the overall heat transfer through the contact spots between the solid particles, and with intensification of electric convection in the spaces between the dispersed particles.

Citation Download Citation

Evguenia V. Korobko and Yulia O. Korobko "Thermophysical properties and rheological behavior of electro-rheological fluids at different temperatures", Proc. SPIE 3989, Smart Structures and Materials 2000: Damping and Isolation, (27 April 2000); https://doi.org/10.1117/12.384593

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KEYWORDS

Particles

Convection

Solids

Thermal effects

Transformers

Electrodes

Copper

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