Arbitrary Lagrangian-Eulerian finite-element method for computation of two-phase flows with soluble surfactants
Data(s) |
01/05/2012
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Resumo |
A finite-element scheme based on a coupled arbitrary Lagrangian-Eulerian and Lagrangian approach is developed for the computation of interface flows with soluble surfactants. The numerical scheme is designed to solve the time-dependent Navier-Stokes equations and an evolution equation for the surfactant concentration in the bulk phase, and simultaneously, an evolution equation for the surfactant concentration on the interface. Second-order isoparametric finite elements on moving meshes and second-order isoparametric surface finite elements are used to solve these equations. The interface-resolved moving meshes allow the accurate incorporation of surface forces, Marangoni forces and jumps in the material parameters. The lower-dimensional finite-element meshes for solving the surface evolution equation are part of the interface-resolved moving meshes. The numerical scheme is validated for problems with known analytical solutions. A number of computations to study the influence of the surfactants in 3D-axisymmetric rising bubbles have been performed. The proposed scheme shows excellent conservation of fluid mass and of the total mass of the surfactant. (C) 2012 Elsevier Inc. All rights reserved. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/44442/1/jou_comp_phy_231-9_3685-3702_2012.pdf Ganesan, Sashikumaar and Tobiska, Lutz (2012) Arbitrary Lagrangian-Eulerian finite-element method for computation of two-phase flows with soluble surfactants. In: JOURNAL OF COMPUTATIONAL PHYSICS, 231 (9). pp. 3685-3702. |
Publicador |
Elsevier Science |
Relação |
http://dx.doi.org/10.1016/j.jcp.2012.01.018 http://eprints.iisc.ernet.in/44442/ |
Palavras-Chave | #Supercomputer Education & Research Centre |
Tipo |
Journal Article PeerReviewed |