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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Acta mechanica 24 (1976), S. 1-12 
    ISSN: 1619-6937
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung Untersucht wird die Stabilität der ebenen Poiseuille-Strömung einer endlichen linear-viskoelastischen Flüssigkeit bei ebenen infinitesimalen Störungen. Die Gedächtnisfunktion wird auf der Grundlage des Kugel-Feder-Modells der Molekulartheorie verdünnter Polymerlösungen erhalten. Die Untersuchung zeigt den destabilisierenden Einfluß des viskoelastischen Charakters der Flüssigkeit; für kleine Weissenberg-Zahlen hat die Größe der Relaxationszeit geringen Einfluß auf die Stabilität. Ebenfalls untersucht wird der Einfluß eines zusätzlichen Newtonschen Gliedes in der Werkstoffbeziehung einer endlichen linear-viskoelastischen Flüssigkeit.
    Notes: Summary We consider the stability of plane Poiseuille flow under plane infinitesimal disturbances of a finite linear viscoelastic fluid. The memory function is obtained on the basis of the bead-spring model in the molecular theory of dilute polymer solutions. The analysis shows the destabilizing influence of the viscoelastic character of the fluid; for small Weissenberg numbers, the number of relaxation times has little influence upon stability. The effect upon stability of the addition of a newtonian term in the stress constitutive relation of a finite linear viscoelastic fluid is also examined.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Rheologica acta 12 (1973), S. 330-336 
    ISSN: 1435-1528
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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