Effect of dissolved gas on bubble growth on a biphilic surface: A diffuse-interface simulation approach

Biao Shen, Jiewei Liu, Junichiro Shiomi, Gustav Amberg, Minh Do-Quang, Masamichi Kohno, Koji Takahashi, Yasuyuki Takata

Research output: Contribution to journalArticle

Abstract

In this paper, we numerically study pool boiling of a binary (water and nitrogen) mixture on a surface endowed with a combination of hydrophobicity and hydrophilicity (i.e., the so called biphilic surface). Here we adopt a numerical approach based on the phase field theory, where the vapor-liquid interface is assumed to be of a finite thickness (hence diffusive in nature) and requires no explicit tracking schemes. The theoretical modeling of two-phase heat and mass transfer in water diluted with nitrogen demonstrates the significant impact of impurities on bubble dynamics. The simulations show that locally high concentrations of nitrogen gas within the vapor bubble is essential to weakening the condensation effect, which results in sustained bubble growth and ultimately (partial) departure from the surface under the artificially enlarged gravity. Simply increasing the solubility of nitrogen in water, however, turns out to be counterproductive because possible re-dissolution of the aggregated nitrogen by the bulk water could deprive the bubble of vital gas contents, leading instead to continuous bubble shrinkage and collapse. Additionally, it is found that with the significant accumulation of nitrogen, the bubble interface is increasingly dominated by a strong interfacial thermocapillary flow due to the Marangoni effect.

Original languageEnglish
Pages (from-to)816-829
Number of pages14
JournalInternational Journal of Heat and Mass Transfer
Volume126
DOIs
Publication statusPublished - Nov 1 2018

Fingerprint

dissolved gases
Nitrogen
bubbles
Gases
nitrogen
Water
simulation
water
Vapors
liquid-vapor interfaces
Hydrophilicity
Hydrophobicity
hydrophobicity
shrinkage
gases
boiling
Boiling liquids
mass transfer
Condensation
Gravitation

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

Effect of dissolved gas on bubble growth on a biphilic surface : A diffuse-interface simulation approach. / Shen, Biao; Liu, Jiewei; Shiomi, Junichiro; Amberg, Gustav; Do-Quang, Minh; Kohno, Masamichi; Takahashi, Koji; Takata, Yasuyuki.

In: International Journal of Heat and Mass Transfer, Vol. 126, 01.11.2018, p. 816-829.

Research output: Contribution to journalArticle

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AU - Do-Quang, Minh

AU - Kohno, Masamichi

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