Measurement of Liquid Droplet Evaporation Rate under the Conditions of Intense Heating

Evgenija Orlova; Dmitriy Feoktistov

doi:10.4028/www.scientific.net/AMM.698.603

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 698Measurement of Liquid Droplet Evaporation Rate...

Measurement of Liquid Droplet Evaporation Rate under the Conditions of Intense Heating

Abstract:

This paper presents an experimental study of the evaporation of a sessile water-sodium chlorides solution drop to open atmosphere on the solid substrate (anodized aluminum) under the varying heat flux. The main parameters defining drop profile, i. e., contact diameter, contact angle, and height of the drop have been obtained. Specific evaporation rate has been calculated. According to the data analysis it was found, that the sessile water-sodium chlorides solution drop with the highest concentration (16.7%) evaporates in the "reverse depinning" mode. So, there is movement of the contact line in the direction of increasing the surface occupied by the drop. The sessile water and water-sodium chlorides solution drop with 4.8% and 9.1% concentration evaporates in the contact line pinning mode. The influence of the initial concentration of the evaporated solution on the contact angle and the specific evaporation rate was found out.

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Periodical:

Applied Mechanics and Materials (Volume 698)

Pages:

603-608

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.698.603

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Online since:

December 2014

Authors:

Evgenija Orlova*, Dmitriy Feoktistov

Keywords:

Contact Angle, Contact Diameter, Evaporation, Heating Mode, Pinning, Reverse Depinning, Water-Sodium Chlorides Solution

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