Marjan Delić (Author), Jure Marn (Author), Zoran Žunič (Author)

Abstract

Analizirali smo primernost metode končnih prostornin za izračun tokovnih razmer v nestisljivi viskozni nenewtonski tekočini ob uporabi Siskovega modela. Prav tako smo analizirali natančnost numeričnih rezultatov v odvisnosti od gostote mreže. Metodo smo testirali na primeru gnanega toka v kotanji in primeru toka v kanalu z nenadno zožitvijo. Numerično dobljene rezultate smo primerjali z vrednostmi iz literature. Za reološki model smo uporabili modelne parametre, dobljene na podlagi preskusa s cevnim viskozimetrom.

Keywords

metode končnih prostornin;modeli;modeli reološki;modeli toka;nenewtonske tekočine;numerične metode;reologija;tekočine nenevtonske

Data

Language: Slovenian
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FS - Faculty of Mechanical Engineering
Publisher: Association of Mechanical Engineers and Technicians of Slovenia et al.
UDC: 532.57:519.61/.64
COBISS: 5761819 Link will open in a new window
ISSN: 0039-2480
Parent publication: Strojniški vestnik
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Other data

Secondary language: English
Secondary title: ǂThe ǂSisko model for non-Newtonian fluid flow using the finite volume method
Secondary abstract: ǂWe ǂhave analyzed the suitability of the finite-volume method for calculating incompressible, viscous, non-Newtonian fluid flow where the Sisko model was used. In addition, convergence criteria are presented and the convergence depending on the mesh size was analyzed. The method was tested for the driven-cavity case and flow in a channel with a sudden contraction. The numerical solution was compared with the results evailable in the open literature. For the rheological model, parameters obtained from an experiment with a capillary viscometer were used.
Secondary keywords: non-newtonian fluids;flow models;control-volume methods;rheological models;tekočine nenevtonske;modeli toka;metode končnih prostornin;modeli reološki;
URN: URN:NBN:SI
Type (COBISS): Not categorized
Pages: str. 687-695
Volume: ǂLetn. ǂ48
Issue: ǂšt. ǂ12
Chronology: 2002
ID: 1747424