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Journal of Plastics Technology 2012/04

Converging Slit Viscometer

For highly viscous liquids that slip in tube flow viscometers, we may sometimes use a converging flow to prevent slip. In this work, we attack the constant flow rate flow of a highly viscous Newtonian fluid through a converging slit with no slip boundaries using the equation of motion in terms of the stress. This work deepens our understanding of a controlled flow rate flow through a converging slit of arbitrary convergence angle by examining the slit in cylindrical coordinates. Worked examples for the calculation of viscosity from a converging slit viscometer are also included.

Adam W. Mix1 | Prof. A. Jeffrey Giacomin1
1 Mechanical Engineering Department and Rheology Research Center, University of Wisconsin-Madison, Wisconsin

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The Journal

The Journal of Plastics Technology is a peer reviewed internet periodical published under the auspices of the Scientific Alliance of Polymer Technology (WAK)


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International Polymer Processing

International Polymer Processing, the journal of the Polymer Processing Society, is a discussion forum for the world-wide community of engineers and scientists in the field of polymer processing.

The journal covers research and industrial application in the very specific areas of designing polymer products, processes, processing machinery and equipment.


International Polymer Processing


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The Journal of Plastics Technology is indexed in SCOPUS, the largest abstract and citation database of peer-reviewed literature.