Letter | Published:

Radial Flow in the Cone-Plate Viscometer

Nature volume 193, page 670 (17 February 1962) | Download Citation

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Abstract

CONE-PLATE viscometers are widely used to-day to measure the flow properties of both Newtonian and non-Newtonian materials. The basic idea which led to the cone-plate geometry came from Mooney and Ewart1, who were trying to eliminate end corrections in coaxial cylinder viscometers. In deriving the equations governing cone-plate flow, Mooney and Ewart assumed that the sample moved in circular lamina only, with no radial component of velocity. This assumption has been generally accepted, and it still appears in a recent mathematical study of the cone-plate viscometer2. However, I have now directly observed a radial component of motion in cone-plate flow of both Newtonian and non-Newtonian materials.

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References

  1. 1.

    , and , Physics, 5, 350 (1934).

  2. 2.

    , J. Colloid Sci., 16, 431 (1961).

  3. 3.

    , Proc. Second Intern. Cong. Rheol., 350 (1953).

  4. 4.

    , Anal. Chem., 28, 1710 (1956).

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Affiliations

  1. Research Department, Socony Mobil Oil Co., Inc., Paulsboro, New Jersey.

    • DAVID B. COX

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DOI

https://doi.org/10.1038/193670a0

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