Abo Bibliothek: Guest

ISSN Online: 2377-424X

ISBN CD: 1-56700-226-9

ISBN Online: 1-56700-225-0

International Heat Transfer Conference 13
August, 13-18, 2006, Sydney, Australia

NUMERICAL INVESTIGATION OF A DROP/SURFACE INTERACTION

Get access (open in a dialog) DOI: 10.1615/IHTC13.p9.150
9 pages

Abstrakt

The present work focuses on mathematical and numerical approach of two elementary problems concerning the drop/surface interaction. The first concerns the static drop on inclined surfaces and the second concerns the spreading of axisymetric drop on horizontal surfaces. A mathematical model of the equilibrium drop on an inclined smooth solid surface is developed. This phenomenon is described by a non linear system of equations based on both the geometry of surfaces and the Laplace equation. The numerical approach allows the obtention of different profiles of the drop for various tilts. The spreading of axisymetric drop on a smooth solid surface is investigated by using the lubrification theory. A mathematical model is developed and includes both the effect of slip velocity and the dependency on the contact angle. First, the simplest mathematical model based on a new approach is examined. Then, a numerical solution of the full non linear system is developed to simulate different shapes of axisymetrical drop. A parametric study allows the determination of the dependency of the spreading rate of the drop versus various physical parameters.