Some remarks concerning the Marangoni flow on an inclined plane

Abstract

We consider a thin liquid layer of a transverse triangular section, situated on an inclined solid plane. On the liquid-gas interface a surface tension gradient acts along or against gravity. We simplify the equations of motion (Navier-Stokes and continuity) to obtain a linear diffusion equation supplied with mixed boundary conditions, i.e., a Dirichlet one on the solid walls of the section and a Robin boundary condition on the liquid-gas interface. A Galerkin finite element procedure along with a Crank-Nicolson finite difference scheme, in order to march in time, is used to solve this initial/boundary value problem. Some numerical experiments are carried out. They determine numerically the flow field for various values of tension gradients.

Authors

E. Chifu
Polytechnic Institute of Cluj-Napoca

C.I. Gheorghiu
Tiberiu Popoviciu Institute of Numerical Analysis

I. Stan
Polytechnic Institute of Cluj-Napoca

Keywords

Marangoni flow; inclined plane; anti-parallel flow; unsteady diffusion equation; mixed boundary value problem; Galerkin finite element; Crank-Nicolson; velocity profile;

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Paper coordinates

E. Chifu, C.I. Gheorghiu, I. Stan, Some remarks concerning the Marangoni flow on an inclined plane, Proceedings of the VII-th International Tagung über Grenzflächenaktive Stoffe, 1985, Akad. Verlag, Berlin, 1987, pp. 211-217.

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Proceedings of the VI-th International Tagung über Grenzflächenaktive Stoffe

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