Počet záznamů: 1
Empirical Modelling of Nonmonotonous Behaviour of Shear Viscosity
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SYSNO ASEP 0395466 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Empirical Modelling of Nonmonotonous Behaviour of Shear Viscosity Tvůrce(i) David, Jiří (UH-J)
Filip, Petr (UH-J) ORCID, RID, SAI
Kharlamov, Alexander (UH-J)Číslo článku 658187 Zdroj.dok. Advances in Materials Science and Engineering. - : Hindawi - ISSN 1687-8434
Roč. 2013, August (2013)Poč.str. 4 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova shear viscosity ; Galindo-rosales ; Carreau-yasuda Vědní obor RIV BK - Mechanika tekutin CEP GA103/09/2066 GA ČR - Grantová agentura ČR Institucionální podpora UH-J - RVO:67985874 UT WOS 000324421300001 DOI 10.1155/2013/658187 Anotace Almost all hitherto proposed empirical models used for characterization of shear viscosity of non-Newtonian liquids describe only its monotonous course. However, the onset of new materials is accompanied by more complicated characteristics of their behaviour including nonmonotonous course of shear viscosity. This feature is reflected not only in an existence of one extreme point (maximum or minimum), but also it can appear in both extreme points; that is, this shear viscosity initially exhibits shear thinning; after attaining a local minimum, it converts to shear thickening, and again after reaching a local maximum, it has a shear-thinning character. It is clear that, for an empirical description of this complex behaviour, a hitherto, used number of parameters (four, five) in classical monotonous models (such as Cross or Carreau-Yasuda) are no longer tenable. If more parameters are applied, there should be given an emphasis on a relatively simple algebraic form of the proposed models, unambiguity of the involved parameters, and their sound interpretation in the whole modelling. This contribution provides an overview of the existing empirical nonmonotonous models and proposes a new 10-parameter model including a demonstration of its flexibility using various experimental data. Pracoviště Ústav pro hydrodynamiku Kontakt Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Rok sběru 2014 Elektronická adresa http://www.hindawi.com/journals/amse/2013/658187/
Počet záznamů: 1