Abstract
In this study, we investigate the growth of bubbles within predominately extensional-deformation flows of thin film stretching form. This involves more than one free-surface to the flow (multiple surfaces), typically as inner (bubble) and outer (filament) boundaries that introduces fluid–gas interfacial treatment. Various bubble initial states and locations may be considered. The problem is discretised in space–time through a hybrid-finite element/volume pressure-correction formulation, coupled with an arbitrary Lagrangian–Eulerian (ALE) coupled with VOF scheme to track domain-mesh and free-surface movement. We contrast these results against the results from a complete ALE algorithm. Various fluid-filament materials have been considered, covering such properties as constant viscosity fluids (Newtonian), low-polymeric/high-solvent viscosity Boger-type (Oldroyd-B) fluids and high-polymeric/low-solvent viscosity elastic-type fluids (Oldroyd-B and Phan-Thien/Tanner). Numerical solutions are presented in terms of comparison between algorithms (ALE versus hybrid ALE/VOF), shapes (bubble shapes, filament shapes), contours of extra-stress (magnitude and location), mid-filament radius and extensional viscosity.
Similar content being viewed by others
References
Eggers J (1997) Nonlinear dynamics and breakup of free-surface flows. Rev Mod Phys 69:865–929
Foggler H, Goddard JD (1970) Collapse of spherical cavities in viscoelastic fluids. J Non-Newton Fluid Mech 13:1135–1141
Foteinopoulou K, Mavrantzas VG, Tsamopoulos J (2004) Numerical simulation of bubble growth in Newtonian and viscoelastic filaments undergoing stretching. J Non-Newton Fluid Mech 122:177–200
Foteinopoulou K, Mavrantazas VG, Tsamopoulos J (2005) Numerical simulation of multi-bubble growth in filaments undergoing stretching. In: 5th GRACM international congress on computational mechanics, Limassol, 29 June–1 July
Foteinopoulou K, Mavrantazas VG, Tsamopoulos J (2006) Numerical simulation of multi-bubble growth in Newtonian filaments undergoing stretching. Phys Fluids 18:042106
Kim C (1994) Collapse of spherical bubbles in Maxwell fluids. J Non-Newton Fluid Mech 55:37–58
Lister JR, Stone HA (1998) Capillary breakup of a viscous thread surrounded by another viscous fluid. Phys Fluids 10:2758–2764
Matallah H, Banaai MJ, Sujatha KS, Webster MF (2006) Modelling filament stretching flows with strain-hardening models and sub-cell approximations. J Non-Newton Fluid Mech 134:77–104
McKinley GH, Sridhar T (2002) Filament-stretching rheometry of complex fluids. Annu Rev Fluid Mech 34:375–415
Miller E, Clasen C, Rothstein JP (2009) The effect of step-stretch parameters on capillary breakup extensional rheology (CaBER) measurements. Rheol Acta 48:625–639
Rasmussen HK, Hassager O (1999) Three-dimensional simulations of viscoelastic instability in polymeric filaments. J Non-Newton Fluid Mech 82:189–202
Ryskin G (1990) Dynamics and sound emission of a spherical cavitation bubble in a dilute polymer solution. J Fluid Mech 218:239–263
Papanastasiou AC, Scriven LE, Macosko CW (1984) Bubble growth and collapse in viscoelastic liquids analysed. J Non-Newton Fluid Mech 16:53–75
Pearson G, Middleman S (1977) Elongational flow behaviour of viscoelastic liquids, part I. Modelling of bubble collapse; part II. Definition and measurement of apparent elongational viscosity. AIChE J 23:714–725
Sizaire R, Legat V (1997) Finite element simulation of a filament stretching extensional rheometer. J Non-Newton Fluid Mech 71:89–107
Sujatha KS, Matallah H, Banaai J, Webster MF (2006) Computational predictions for viscoelastic filament stretching flows: ALE methods and free-surface techniques (CM and VOF). J Non-Newton Fluid Mech 137:81–102
Sujatha KS, Matallah H, Banaai J, Webster MF (2008) Modelling step-strain filament-stretching (CaBER-type) using ALE techniques. J Non-Newton Fluid Mech 148:109–121
Yao M, McKinley GH (1998) Numerical simulation of extensional deformations of viscoelastic liquid bridges in filament stretching devices. J Non-Newton Fluid Mech 74:47–88
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Sujatha, K.S., Matallah, H., Webster, M.F. et al. Numerical predictions of bubble growth in viscoelastic stretching filaments. Rheol Acta 49, 1077–1092 (2010). https://doi.org/10.1007/s00397-010-0493-2
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00397-010-0493-2