TEMPERATURE EFFECTS NEAR A MOVING THREE-PHASE CONTACT LINE
V.B. Neverova
Lavrentyev Institute of Hydrodynamics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
Keywords: free surface, dynamic contact angle, three-phase contact line, nonisothermal flow
Abstract
A numerical study of the problem of symmetric capillary filling with a viscous incompressible fluid in the nonisothermal case is performed. The flow is described using the Pavlovskii model. In this problem, the dynamic contact angle issue arises when the impingement angle differs from 0 or π. This issue originates from the incompatibility between the free-surface boundary conditions and the no-slip condition on the solid wall in the vicinity of the moving three-phase contact line. To close the formulation, the no-slip condition is replaced by a generalized Navier slip condition. The influence of the dynamic contact angle on the temperature near the three-phase contact line is investigated for flows with low capillary numbers.
|
