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Numerical study of the square-root conformation tensor formulation for confined and free-surface viscoelastic fluid flows
(2016-12-01)
We present a numerical study of a stabilization method for computing confined and free-surface flows of highly elastic viscoelastic fluids. In this approach, the constitutive equation based on the conformation tensor, which ...
Three-dimensional transient complex free surface flows: Numerical simulation of XPP fluid
(2013-05-01)
In this paper we present a finite difference MAC-type approach for solving three-dimensional viscoelastic incompressible free surface flows governed by the eXtended Pom-Pom (XPP) model, considering a wide range of parameters. ...
A numerical study of the Kernel-conformation transformation for transient viscoelastic fluid flows
(Elsevier B.V., 2015-12-01)
This work presents a numerical application of a generic conformation tensor transformation for simulating highly elastic flows of non-Newtonian fluids typically observed in computational rheology. In the Kernel-conformation ...
Application of the natural stress formulation for solving unsteady viscoelastic contraction flows
(Elsevier B.V., 2019-07-01)
We present a numerical scheme for a previously unexploited formulation of the equations for unsteady viscoelastic flow. The formulation aligns the polymer stress along particle paths/streamlines, utilising the characteristic ...
Effect of the solvent viscosity on pure electro-osmotic flow of viscoelastic fluids
(2018-09-01)
In this work the fully-developed steady channel flow of the homogeneous polymer solution studied in [4] is revisited and a completely new analytical solution is proposed which is devoid of the limitations of the previous ...
Numerical prediction of three-dimensional time-dependent viscoelastic extrudate swell using differential and algebraic models
(PERGAMON-ELSEVIER SCIENCE LTD, 2011)
This study investigates the numerical simulation of three-dimensional time-dependent viscoelastic free surface flows using the Upper-Convected Maxwell (UCM) constitutive equation and an algebraic explicit model. This ...
Numerical solution of the eXtended Pom-Pom model for viscoelastic free surface flows
(Elsevier B.V., 2011-02-01)
In this paper we present a finite difference method for solving two-dimensional viscoelastic unsteady free surface flows governed by the single equation version of the eXtended Pom-Pom (XPP) model. The momentum equations ...
Numerical study on micro-scale extensional viscoelastic flows
(Elsevier B.V., 2020-02-01)
The capillary thinning dynamics can be considered one of the fingerprints of extensionally-dominated viscoelastic flows. Notably, the rheological behavior of complex fluids in extensional flow has been investigated in ...
Reynolds and Weissenberg numbers in viscoelastic flows
(Elsevier B.V., 2021-06-01)
One of the greatest challenges in performing numerical simulations of viscoelastic flow is how to choose the model parameters in order to be able to achieve quantitative agreement with experimental measurements in benchmark ...
Influence of temperature on the rheological behavior of jaboticaba pulp
(Soc Brasileira Ciencia Tecnologia AlimentosCampinasBrasil, 2007)