On the implementation of viscoelastic models in commercial CFD programs

• Autorzy: Gruber M.
• Konferencja: Third International Conference on Engineering Rheology, ICER 2005
• Języki publikacji: EN

Abstrakty

EN

Although finite-volume methods have significant advantages in terms of memory usage and computational speed, traditionally finite-element based programs are used to solve complex viscoelastic fluid dynamic problems. This work presents the successful extension of the commercial, finite volume based, state-of-the-art CFD software package FLUENTŽ to viscoelastic fluid flow problems, a feature which is not supported by the standard version of the program. Differential viscoelastic models of Maxwell-Type are implemented utilizing two principle capabilities of the software, i.e. the possibilities to define additional transport equations for each component of the viscoelastic stress tensor and to modify this equations using the programming interface, respectively. Results of an illustrative benchmark problem are presented, demonstrating the capability and accuracy of the proposed method to perform viscoelastic flow simulations up to a Deborah number of 100.

Słowa kluczowe

EN

viscoelastic; numerical simulation; commercial software; finite volume method

PL

teoria sprężystości; lepkosprężystość; symulacja numeryczna

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2005
• Tom: Vol. 10, no spec
• Strony: 219--224
• Opis fizyczny: Bibliogr. 6 poz., wykr.

Twórcy

autor

Gruber M.

• Christian-Doppler-Laboratory for Computational Applied Thermofluiddynamics Mining University of Leoben, Franz-Josef-Str.18, 8700 Leoben, AUSTRIA

Bibliografia

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• [5] Rajagopalan R.C et al. (1990): Finite element methods for calculation of steady viscoelastic flow using constlf equations with a Newtonian viscosity. - J. Non-Newtonian Fluid Mech., vol.36, pp. 159-192.
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