An Extension of the Theory of Oscillating Cup Viscometers

Document Type

Article

Publication Date

5-1-1990

Department

Physics and Astronomy

School

Mathematics and Natural Sciences

Abstract

The theory of the fluid motion in the interior of an oscillating or rotating cup is reexamined. The quantity of interest in viscometry is the torque exerted by the fluis on the sides and rims of the cup. In this paper expressions for the torque are obtained for geometries for which the cup height approaches a fluid boundary layer thickness. Interest in such geometries is due to viscosity measurements made in mixtures in the critical region where cups of small height are used in order to minimize gravity effects.

Publication Title

International Journal of Thermophysics

Volume

11

Issue

3

First Page

525

Last Page

535

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