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1

Thin layer of electrorheological liquids in bioreactors

Wierzcholski K. C.

International Journal of Applied Mechanics and Engineering

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2005

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Vol. 10, no spec

159-163

EN

The electromagnetic fields have a great influence on the behaviour of all the nutrient liquids occurring in bioreactors and on the living tissue. Some benefits can be taken from the effects of the electromagnetic fields on the cultivating tissue in bioreactors, namely viscosity changes of nutrient liquids, hyperthermal conditions, friction force changes.

2

Application of the electric field for reducing the suspension effective viscosity

Taran E. Y., Pridatchenko Y. V., Gryaznova V. A.

International Journal of Applied Mechanics and Engineering

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2002

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Vol. 7, Spec. is

93-98

EN

The special features of electrorheological control over effective viscosity of dilute suspension with axisymmetric rigid suspended particles in a simple shear flow using a cross electric field are investigated. It is demonstrated that if the suspension carrier fluid is anisotropic then the orientation of suspended particles under the action of hydrodynamic forces and forces of electric field can lead to an anomalous reducing the suspension effective viscosity below the value of the effective viscosity of the carrier fluid. As a rheological model of the electrically neutral suspension carrier fluid and a hydrodynamic model of suspended particles, which have permanent dipole moment, the Ericksen anisotropic fluid and uniaxial dumbbell are used. The rheological equations of the suspension are obtained within the framework of the structure-phenomenological approach. The results obtained can be used in the lubricant rheology for the study of the possible influence of the orientation of particles of additives added to liquid crystalline lubricants for controlling their rheological properties.

3

ER fluid application for chemical technology

Korobko E. V., Shulman Z. P.

Applied Mechanics and Engineering

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1999

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Vol. 4, no spec.

252-258

EN

The paper is an attempt to generalize the results of studies concerned with the "intelligent" fluids. Regularities of variation of mechanical (viscosity, elasticity, plasticity) properties of a class of liquid-disperse suspensions sensitive to an external electric field which are known as electrorheological fluids or "smart" fluids, are analyzed. The designs and operation principles of converters of electric energy to mechanical in power systems, and friction devices and others are described.

4

A way ahead - ESF consolidation

Bullough W. A.

Applied Mechanics and Engineering

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1999

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Vol. 4, no spec.

243-252

EN

A static, kinematic and dynamic small sample rheometer for the characterisation of electrically controlled functional fluids and supporting methodology to link automatically produced data from it to full scale prototype machine performance, and vice-versa, are outlined. This is done in response to requirements for better and faster testing of ERF/MRS and similar hydraulic power transmission media as they enter the second phase of development, to promote standardisation of terms and methods of application of fluids and to speed up the appraisal period. One scheme which is based on an integration of existing ad hoc techniques is set before this meeting. Its purpose is to attract criticism, suggestions and collaborative networking so as to promote from the outset the best code of rheological practice.