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On the stability of the torsional flow of a class of Oldroyd-type fluids (1985)

Phan-Thien, N. ; Huilgol, R. R.

Springer

Rheologica acta 24 (1985), S. 551-555

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ISSN: 1435-1528

Keywords: Torsional flow ; Oldroyd-B fluid ; stability

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology , Physics

Notes: Abstract It is shown that the exact solution of the torsional flow of a class of Oldroyd-type fluids is kinematically similar to that for a Newtonian fluid. Furthermore, it is shown by a linearized stability analysis and by numerical integration, that the basic flow is unstable at high Weissenberg numbers. An Oldroyd fluid which has a negative second-normal stress coefficient is found to be more stable than one with zero (or positive) second-normal stress coefficient in this flow.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01332587

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