Search Results - "Webster, M.F."

High-Weissenberg predictions for micellar fluids in contraction–expansion flows by López-Aguilar, J.E., Webster, M.F., Tamaddon-Jahromi, H.R., Manero, O.

“…•High-We solutions for wormlike micellar systems (Wecrit∼400).•Constitutive (ABS) and centreline (VGR) corrections proposed.•Theoretical-to-numerical…”
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Enhanced pressure drop, planar contraction flows and continuous spectrum models by Webster, M.F., Tamaddon-Jahromi, H.R., López-Aguilar, J.E., Binding, D.M.

“…•A swAM model reflects enhanced pressure drops in planar contraction flows.•A model with greater flexibility in control of first normal-stress difference…”
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Predictions for circular contraction-expansion flows with viscoelastoplastic & thixotropic fluids by López-Aguilar, J.E., Webster, M.F., Tamaddon-Jahromi, H.R., Manero, O.

“…In this predominately predictive modelling finite volume/element study, a comparative analysis is performed for time-dependent and viscoelastoplastic flow in a…”
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Simulation of viscoelastic and viscoelastoplastic die-swell flows by Al-Muslimawi, A., Tamaddon-Jahromi, H.R., Webster, M.F.

“…► Elevation in plasticity suppresses swell; rise in elasticity stimulates swell. ► Swelling is significant with solvent fraction β=1/9, when compared to β=0.9…”
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Contraction-ratio variation and prediction of large experimental pressure-drops in sharp-corner circular contraction-expansions–Boger fluids by López-Aguilar, J.E., Webster, M.F., Tamaddon-Jahromi, H.R., Pérez-Camacho, M., Manero, O.

“…• Predictive matching of Boger-fluid experiments in circular contraction-expansions.• Flow-transitions predicted for all aspect-ratios (α) and with rise in…”
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Pressure-drop and kinematics of viscoelastic flow through an axisymmetric contraction–expansion geometry with various contraction-ratios by Pérez-Camacho, M., López-Aguilar, J.E., Calderas, F., Manero, O., Webster, M.F.

“…•Pressure-drops and kinematics of flow through an axisymmetric contraction–expansion.•The kinematics of vortex and the transition from lip to corner vortex…”
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Modelling polymeric flows in reverse roll coating processes with dynamic wetting lines and air-entrainment: FENE and PTT solutions by Echendu, S.O.S., Tamaddon-Jahromi, H.R., Webster, M.F.

“…•Investigation for reverse roller coating viscoelastic flow with FENE and PTT models.•Hybrid finite element-finite volume subcell with dynamic free-surface…”
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The numerical simulation of some contraction flows of highly elastic liquids and their impact on the relevance of the Couette correction in extensional rheology by Walters, K., Webster, M.F., Tamaddon-Jahromi, H.R.

“…Existing experimental data on planar and axisymmetric contraction flows of constant-viscosity and shear-thinning elastic liquids have presented rheologists…”
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Excess pressure drop and drag calculations for strain-hardening fluids with mild shear-thinning: Contraction and falling sphere problems by Tamaddon Jahromi, H.R., Webster, M.F., Williams, P.R.

“…► Predicting pressure-drop for Boger fluid in 4:1:4 contraction-expansion flow. ► Relating the observed behaviour of highly-elastic Boger fluids in complex…”
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Modelling Reverse Roll Coating Flow with Dynamic Wetting Lines and Inelastic Shear Thinning Fluids by Echendu S.O.S, Tamaddon-Jahromi H.R., Webster M.F.

“…This study addresses the Taylor-Galerkin/pressure-correction solution of industrial high-speed reverse roller coating flow associated with thin-film…”
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Generalised approach for transient computation of start-up pressure-driven viscoelastic flow by Keshtiban, I.J., Puangkird, B., Tamaddon-Jahromi, H., Webster, M.F.

“…This article investigates a generalised solution approach for transient viscoelastic flows employing consistent dynamic boundary conditions. Such a procedure…”
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The numerical prediction of planar viscoelastic contraction flows using the pom–pom model and higher-order finite volume schemes by Aguayo, J.P., Phillips, P.M., Phillips, T.N., Tamaddon-Jahromi, H.R., Snigerev, B.A., Webster, M.F.

“…This study investigates the numerical solution of viscoelastic flows using two contrasting high-order finite volume schemes. We extend our earlier work for…”
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Computational predictions for viscoelastic filament stretching flows: ALE methods and free-surface techniques (CM and VOF) by Sujatha, K.S., Matallah, H., Banaai, M.J., Webster, M.F.

“…This article considers the dynamics of filament stretching for viscoelastic liquids. We investigate the consequences of employing both fe and fv spatial…”
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Extensional response of the pom-pom model through planar contraction flows for branched polymer melts by Aguayo, J.P., Tamaddon-Jahromi, H.R., Webster, M.F.

“…One objective of this study is to assess the influence of the number of dangling arms at each end of the pom-pom molecule on flow characteristics in a 4:1…”
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Simulation for viscoelastic flow by a finite volume/element method by Wapperom, P., Webster, M.F.

“…Stability of a second-order finite element/finite volume (FE/FV) hybrid scheme is investigated on the basis of flows with increasing Weissenberg number. FEs…”
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Numerical prediction of extensional flows in contraction geometries: hybrid finite volume/element method by Aboubacar, M., Matallah, H., Tamaddon-Jahromi, H.R., Webster, M.F.

“…We examine the flow of viscoelastic fluids with various shear and elongational properties in axisymmetric and planar 4:1 contractions, under creeping flow…”
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Viscoelastic multi-mode simulations of wire-coating by Matallah, H., Townsend, P., Webster, M.F.

“…A time-stepping finite element method is used to predict the viscoelastic stresses that arise in a tube-tooling wire-coating problem. The polymer melt HDPE is…”
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On two- and three-dimensional expansion flows by Baloch, A., Townsend, P., Webster, M.F.

“…This paper gives consideration to incompressible Newtonian flows through two- and three-dimensional expansions. Through a time-stepping scheme, steady-state…”
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Numerical simulation of viscous filament stretching flows by Chandio, M.S, Matallah, H, Webster, M.F

“…A numerical study on the stretching of a Newtonian fluid filament is analysed. Stretching is performed between two retracting plates, moving under constant…”
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Simulation of pressure- and tube-tooling wire-coating flows through distributed computation by Baloch, A, Matallah, H, Ngamaramvaranggul, V, Webster, M.F

“…This article focuses on the comparative study of annular wire-coating flows with polymer melt materials. Different process designs are considered of pressure-…”
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