Thermocapillary breakdown of a horizontal spot-heated liquid layer

Serafim Spesivtsev, Yuriy Lyulin

Research output: Contribution to journalConference articlepeer-review

Abstract

Thermocapillary breakdown of thin (0.3-0.7 mm) horizontal layers of liquid (ethanol) when heated from a localized hot spot was investigated experimentally. The effects of layer thickness and the surface properties of the substrates on the breakdown dynamics were studied. Visualization and control of the liquid layer were carried out using schlieren and shadowgraphy techniques. Main steps of the breakdown process were determined and average velocity of the dry spot formation was measured. Significant influence of the substrate properties on breakdown dynamics has been found. It was shown that one of the main factors affecting the dynamics of layer breakdown and the formation of dry spots in the heating area besides the thermocapillary effect is evaporation.

Original languageEnglish
Article number00038
JournalMATEC Web of Conferences
Volume84
DOIs
Publication statusPublished - 16 Nov 2016
Externally publishedYes
EventInternational Symposium and School of Young Scientists on Interfacial Phenomena and Heat Transfer, IPHT 2016 - Novosibirsk, Russian Federation
Duration: 2 Mar 20164 Mar 2016

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