A purely elastic transition in Taylor-Couette flow |
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Authors: | S J Muller R G Larson E S G Shaqfeh |
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Institution: | (1) AT & T Bell Laboratories, 600 Mountain Avenue, 07974 Murray Hill, New Jersey, USA |
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Abstract: | Experimental evidence of a non-inertial, cellular instability in the Taylor-Couette flow of a viscoelastic fluid is presented. A linear stability analysis for an Oldroyd-B fluid, which is successful in describing many features of the experimental fluid, predicts the critical Deborah number,De
c
, at which the instability is observed. The dependence ofDe
c
on the value of the dimensionless gap between the cylinders is also determined.This paper is dedicated to Professor Hanswalter Giesekus on the occasion of his retirement as Editor of Rheologica Acta. |
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Keywords: | Taylor-Couetteflow stability Boger fluid Oldroyd-B equation |
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