Experimental characterization of buoyancy- and surface tension-driven convection during the drying of a polymer solution
- 1 August 2008
- journal article
- research article
- Published by Elsevier BV in International Journal of Heat and Mass Transfer
- Vol. 51 (17-18), 4228-4237
- https://doi.org/10.1016/j.ijheatmasstransfer.2008.02.006
Abstract
Within the framework of convection induced by evaporation, an experimental study of the drying of a polymer solution has been performed. Several visualisations of convective pattern development are presented: top view with a video camera and an IR camera, as well as visualisation in a vertical section. The appearance and origin (buoyancy- and/or surface tension-driven instabilities) of the convective structures are analysed as a function of the initial thickness and viscosity. Different regimes are obtained when comparing the lifetime of the convective patterns to the thermal transient regime induced by evaporation and to the formation of a thin viscous skin at the surface.Keywords
This publication has 16 references indexed in Scilit:
- Rayleigh-Bénard Convection: Thirty Years of Experimental, Theoretical, and Modeling WorkPublished by Springer Science and Business Media LLC ,2006
- The physics of evaporative and convective instabilities in bilayer systems: Linear theoryPhysics of Fluids, 2004
- Influence of evaporation on Bénard-Marangoni instability in a liquid-gas bilayer with a deformable interfaceZeitschrift für Physik B Condensed Matter, 2004
- Bénard–Marangoni convection in a strongly evaporating fluidPhysica D: Nonlinear Phenomena, 2003
- Interfacial turbulence in evaporating liquids: Theory and preliminary results of the ITEL-master 9 sounding rocket experimentAdvances in Space Research, 2003
- On the thermocapillary Instabilities in a liquid layer heated from belowInternational Journal of Heat and Mass Transfer, 1990
- Linear perturbation analysis of surface-tension-driven convection at a plane interface (marangoni instability)Journal of Colloid and Interface Science, 1981
- Non-linear properties of thermal convectionReports on Progress in Physics, 1978
- Natural convection in pools of evaporating liquidsJournal of Fluid Mechanics, 1966
- On convection cells induced by surface tensionJournal of Fluid Mechanics, 1958