Experimental investigation of the impact of surface tension and artificial nucleation site geometry on the bubble growth

Vodopivec, Matevž (author), Berhe, MG (author), Bucci, Mattia (author), Zupančič, Matevž (author), Fontanarosa, Donato (author), Može, Matic (author), Castagnet, S. (author), Golobič, Iztok (author), Vetrano, Maria Rosaria (author)

The present work provides an experimental assessment of the impact of liquid surface tension on the single bubble dynamics generated by artificial nucleation cavities during boiling in a quiescent liquid. De-ionized water is used with and without added non-ionic surfactant (Dynol 800) to modify the fluid's surface tension while keeping the other thermo-physical fluid properties unchanged. Furthermore, two different cavity geometries are investigated: a vertical and a 30°-inclined cone produced via femtosecond laser texturing. This paper shows preliminary results related to the influence of surface tension and cavity geometry on the single bubble dynamics. A methodological baseline is provided to enable future studies aiming to answer still-open questions about vapour bubble nucleation phenomena.

• Language: English
• Keywords: nucleate boiling, surface tension, microcavities, femtosecond lasers, surface functionalization
• Work type: Article
• Typology: 1.08 - Published Scientific Conference Contribution
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: 6 str.
• Numbering: Vol. 2766, art. 012117
• PID: 20.500.12556/RUL-158699
• UDC: 544.7:66.02
• ISSN on article: 1742-6596
• DOI: 10.1088/1742-6596/2766/1/012117
• COBISS.SI-ID: 199357955
• Publication date in RUL: 19.06.2024

Record is a part of a proceedings

• Title: Eurotherm 2024
• COBISS.SI-ID: 197654787

Record is a part of a journal

• Title: Journal of physics : Conference series
• Publisher: Institute of Physics Publishing
• ISSN: 1742-6596
• COBISS.SI-ID: 2035044

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: mehurčkasto vrenje, površinska napetost, mikrojamice, femtosekundni laserji, funkcionalizacija površin

Projects

• Funder: Other - Other funder or multiple funders
• Funding programme: Fonds Wetenschappelijk OnderzoekVlaanderen (FWO)
• Project number: G066722N
• Name: FWO Weave project BEST

• Funder: Other - Other funder or multiple funders
• Funding programme: FWO Medium Scale Infrastructure FemtoFac
• Project number: I001120N