Physics

Numerical study of a sessile drop on a heated substrate

A. E. Korenchenko^a, A. J. Ilimbaeva^b, V. P. Beskachko<sup>b

a</sup> Institute of Metallurgy of the Ural Branch of Russian Academy of Sciences
^b South Ural State University

Abstract: The dynamic behavior of a system consisting of sessile drop, heated substrate and gas is investigated by numerical methods. The mode with constant contact angle is considered. The solid surface is assumed to be planar, chemically inert and isothermal. The gas is considered to be a non-condensing ideal gas. The thermal and solutal buoyancy effects in gas are taken into account. Buoyancy and Marangoni convection are considered in the liquid phase. The movement of liquid-gas interface is analyzed in terms of its impact on the accuracy of sessile drop method.

Keywords: surface tension, sessile droplet, computer simulation.

UDC: 532.6

Received: 13.10.2012