On the sedimentation velocity of spheres in a polymeric liquid

Henrik Koblitz Rasmussen; Ole Hassager

doi:10.1016/0009-2509(95)00317-7

On the sedimentation velocity of spheres in a polymeric liquid

Henrik Koblitz Rasmussen, Ole Hassager

Department of Chemical and Biochemical Engineering

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

A Lagrangian finite element method is used to simulate the transient sedimentation of spheres in polymeric liquids. The liquid is described by an integral constitutive equation of the Rivlin-Sawyers type. The simulations show a marked increase in the drag, which is apparently related to the elongational flow in the wake. Furthermore, the results indicate that the sedimenting sphere geometry is a possible candidate for a rheometer capable of providing information about fluids in extensional flows.

Original language	English
Journal	Chemical Engineering Science
Volume	51
Issue number	9
Pages (from-to)	1431-1440
ISSN	0009-2509
DOIs	https://doi.org/10.1016/0009-2509(95)00317-7
Publication status	Published - 1996

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title = "On the sedimentation velocity of spheres in a polymeric liquid",

abstract = "A Lagrangian finite element method is used to simulate the transient sedimentation of spheres in polymeric liquids. The liquid is described by an integral constitutive equation of the Rivlin-Sawyers type. The simulations show a marked increase in the drag, which is apparently related to the elongational flow in the wake. Furthermore, the results indicate that the sedimenting sphere geometry is a possible candidate for a rheometer capable of providing information about fluids in extensional flows.",

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AU - Rasmussen, Henrik Koblitz

AU - Hassager, Ole

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N2 - A Lagrangian finite element method is used to simulate the transient sedimentation of spheres in polymeric liquids. The liquid is described by an integral constitutive equation of the Rivlin-Sawyers type. The simulations show a marked increase in the drag, which is apparently related to the elongational flow in the wake. Furthermore, the results indicate that the sedimenting sphere geometry is a possible candidate for a rheometer capable of providing information about fluids in extensional flows.

AB - A Lagrangian finite element method is used to simulate the transient sedimentation of spheres in polymeric liquids. The liquid is described by an integral constitutive equation of the Rivlin-Sawyers type. The simulations show a marked increase in the drag, which is apparently related to the elongational flow in the wake. Furthermore, the results indicate that the sedimenting sphere geometry is a possible candidate for a rheometer capable of providing information about fluids in extensional flows.

KW - Polymer Process

KW - Numerical modelling

U2 - 10.1016/0009-2509(95)00317-7

DO - 10.1016/0009-2509(95)00317-7

M3 - Journal article

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JO - Chemical Engineering Science

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On the sedimentation velocity of spheres in a polymeric liquid

Abstract

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