Linear stability of viscoelastic Taylor-Couette flow: influence of fluid rheology and energetics

U. A. Al-Mubaiyedh; R. Sureshkumar; B. Khomami

doi:10.1122/1.1289279

Linear stability of viscoelastic Taylor-Couette flow: influence of fluid rheology and energetics

U. A. Al-Mubaiyedh, R. Sureshkumar, B. Khomami

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

The influence of detailed fluid rheology and energetics on the stability of purely elastic Taylor-Couette flow was studied using thermodynamically consistent viscoelastic constitutive models. Isothermal analyses revealed that over a broad range of solvent viscosities the nonaxisymmetric mode is the most dangerous eigenmode and the critical Deborah number is reduced as the number of relaxation modes is increased. It was observed that the details of the fluid rheology can influence the onset conditions.

Original language	English (US)
Pages (from-to)	1121-1138
Number of pages	18
Journal	Journal of Rheology
Volume	44
Issue number	5
DOIs	https://doi.org/10.1122/1.1289279
State	Published - Sep 2000
Externally published	Yes

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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AB - The influence of detailed fluid rheology and energetics on the stability of purely elastic Taylor-Couette flow was studied using thermodynamically consistent viscoelastic constitutive models. Isothermal analyses revealed that over a broad range of solvent viscosities the nonaxisymmetric mode is the most dangerous eigenmode and the critical Deborah number is reduced as the number of relaxation modes is increased. It was observed that the details of the fluid rheology can influence the onset conditions.

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Linear stability of viscoelastic Taylor-Couette flow: influence of fluid rheology and energetics

Abstract

ASJC Scopus subject areas

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