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Modified Bautista–Manero (MBM) modelling for hyperbolic contraction–expansion flows / Sorour Tabatabaei, Jose Esteban López-Aguilar, Hamid Reaz Tamaddon-Jahromi, Michael Webster, Rhodri Williams

Rheologica Acta, Volume: 54, Issue: 11-12, Pages: 869 - 885

Swansea University Authors: Michael Webster, Rhodri Williams

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DOI (Published version): 10.1007/s00397-015-0870-y

Abstract

In this study, modelling of network-structured material flow is considered through a rounded-corner, hyperbolic 4:1:4 contraction-expansion geometry, under axisymmetric configuration. Three representative constitutive models are adopted to represent networked behaviour and to investigate the flow of...

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Published in: Rheologica Acta
Published: 2015
URI: https://cronfa.swan.ac.uk/Record/cronfa27556
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Abstract: In this study, modelling of network-structured material flow is considered through a rounded-corner, hyperbolic 4:1:4 contraction-expansion geometry, under axisymmetric configuration. Three representative constitutive models are adopted to represent networked behaviour and to investigate the flow of wormlike micellar fluids in this context. This includes the MBM model (for base thixotropic properties), some newly proposed micellar models (NM_τp & NM_T; for advanced thixotropic modelling), and the EPPT model (for contrast against non-thixotropic properties). In this configuration, emphasis is placed upon interpretation of flow behaviour for these constitutive models, against their response in simple rheometrical flows. To best determine the factors that contribute to epd-prediction, current findings have also been contrasted against those reported earlier in Lopez-Aguilar et al. [1], for the counterpart abrupt rounded-corner, axisymmetric 4:1:4 contraction-expansion flow.
Keywords: Contraction–expansion flow , EPPT , Modified Bautista–Manero model , Thixotropic modelling
College: College of Engineering
Issue: 11-12
Start Page: 869
End Page: 885