Review
The motion of rigid particles in viscoelastic fluids

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Abstract

In this paper, we study the motion of a rigid particle in a viscoelastic fluid under the assumption of negligible inertial effects (based on particle dimensions). Concentrating solely upon situations where no change of orientation or position of the particle is possible in a Newtonian solvent, it suffices to consider the low Weissenberg number limit. By employing the concept of a second-order-fluid, the theoretical predictions for a single particle in an essentially unbounded domain correlate quite well with experimental results. As soon as interaction effects (particle—particle and particle—wall, respectively) are included in the theory, all predictions are at odds with the observations.

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    Paper presented at the 1980 Engineering Foundation Conference, Asimolar, California, U.S.A., January 20–25.

    1

    Present address: Department of Chemical Engineering and Applied Chemistry, Columbia University, New York, N.Y. 10027, U.S.A.

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