Abstract
We propose a two-dimensional model of a steady laminar flow of a liquid film in a channel in the presence of a cocurrent gas flow. An analytical solution for the problem of temperature distribution is obtained for a linear flow velocity profile. The linearized problem of thermocapillary deformation of the film surface caused by local heating at a constant heat flux is solved. It is established that a thermocapillary bump is formed in the region where a thermal boundary layer emerges on the film surface. Additional perturbations, decaying in the upstream direction, can be present on the free surface in front of the bump. A criterion determining this effect is found.
Original language | English |
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Pages (from-to) | 418-421 |
Number of pages | 4 |
Journal | Technical Physics Letters |
Volume | 30 |
Issue number | 5 |
DOIs | |
Publication status | Published - 1 May 2004 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)