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Squeezing flow of elastic liquids

Authors
Journal
Journal of Non-Newtonian Fluid Mechanics
0377-0257
Publisher
Elsevier
Publication Date
Volume
13
Issue
2
Identifiers
DOI: 10.1016/0377-0257(83)80015-9

Abstract

Abstract The theoretical analysis is made of the relation between applied force and plate separation for squeezing flows of viscoelastic liquids between closely-spaced parallel disks. The lubrication approximation and the quasi-steady-state assumption are employed in the development. Elastic effects are incorporated through inclusion of normal stresses. Solutions are presented for liquids with power-law viscometric functions, and a numerical procedure is used for fluids having viscometric functions of arbitrary form. For fast and slow squeezing, calculated values of t 1 2 , the time required to squeeze out half the fluid, are found to agree with the constant force data of Leider [1,2].

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