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Evaporation-driven Thermocapillary MarangoniConvection in Liquid Layers of Different Depths

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journal contribution
posted on 03.07.2018 by A Sankaran, AL Yarin
In the experimental part, which employed infrared (IR) camera, temperature distributions at the free surface of ethanol layers in deep and shallow vessels under room temperature or subjected to heating from below in the 68 °C - 105 °C temperature range (including the ethanol boiling temperature of 78.3 °C) were studied, and correlated with the heater surface temperature. The regular and irregular Marangoni convection patterns were recognized. Light particles fully entrained by the Marangoni convection on the free surface were tracked and their velocities were measured and compared to the theoretical predictions. Namely, a model is developed for the Marangoni-driven convection due to a non-uniform evaporationrelated cooling of the free surface of a liquid in anopen vessel. In this case, an analytical solution.

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Publisher Statement

This is the author’s version of a work that was accepted for publication in International Journal of Heat and Mass Transfer. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in PUBLICATION Elsevier Ltd, [Vol #122, (JULY 2018)] DOI: 10.1016/j.ijheatmasstransfer.2018.01.136

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Elsevier

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en_US

issn

00179310

Issue date

01/03/2018

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