Back to the basics

Wettability, icing and ice adhesion

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Icing in the wet growth regime is caused by water drops on a surface, the dynamics of which are determined by external forces, such a gravity and wind drag. However, the drop dynamics also depend on the wetting characteristics of the surface material. The static contact angle determines the area of a drop that is in contact with the solid, and the difference between the advancing contactangle and receding contact angle, i.e., the contact angle hysteresis, determines the critical external force at which the drop begins to slide. Many studies have been made on the contact angles and their relation to runback icing andice adhesion, but no quantitative theory for the contact angle hysteresis exists. Here, the contact angle hysteresis is explained by a first principles theory, and good quantitative agreement between the theory and experimental data isfound. The implications of the theory to icing and ice adhesion are outlined.
Original languageEnglish
Title of host publicationProceedings of IWAIS 2015
Pages1-4
Publication statusPublished - 2015
MoE publication typeA4 Article in a conference publication
EventXVI International Workshop on Atmospheric Icing of Structures, IWAIS 2015 - Uppsala, Sweden
Duration: 28 Jun 20152 Jul 2015

Conference

ConferenceXVI International Workshop on Atmospheric Icing of Structures, IWAIS 2015
Abbreviated titleIWAIS 2015
CountrySweden
CityUppsala
Period28/06/152/07/15

Fingerprint

ice formation
wettability
ice
adhesion
hysteresis
chutes
wetting
drag
gravitation
water

Keywords

  • icing
  • wettability
  • hydrophobicity
  • contact angle

Cite this

Makkonen, L. (2015). Back to the basics: Wettability, icing and ice adhesion. In Proceedings of IWAIS 2015 (pp. 1-4)
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abstract = "Icing in the wet growth regime is caused by water drops on a surface, the dynamics of which are determined by external forces, such a gravity and wind drag. However, the drop dynamics also depend on the wetting characteristics of the surface material. The static contact angle determines the area of a drop that is in contact with the solid, and the difference between the advancing contactangle and receding contact angle, i.e., the contact angle hysteresis, determines the critical external force at which the drop begins to slide. Many studies have been made on the contact angles and their relation to runback icing andice adhesion, but no quantitative theory for the contact angle hysteresis exists. Here, the contact angle hysteresis is explained by a first principles theory, and good quantitative agreement between the theory and experimental data isfound. The implications of the theory to icing and ice adhesion are outlined.",
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Makkonen, L 2015, Back to the basics: Wettability, icing and ice adhesion. in Proceedings of IWAIS 2015. pp. 1-4, XVI International Workshop on Atmospheric Icing of Structures, IWAIS 2015, Uppsala, Sweden, 28/06/15.

Back to the basics : Wettability, icing and ice adhesion. / Makkonen, Lasse.

Proceedings of IWAIS 2015. 2015. p. 1-4.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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Makkonen L. Back to the basics: Wettability, icing and ice adhesion. In Proceedings of IWAIS 2015. 2015. p. 1-4