Depinning of bubble contact line on a biphilic surface in subatmospheric boiling: Revisiting the theories of bubble departure

Biao Shen, Masayuki Yamada, Tomosuke Mine, Sumitomo Hidaka, Masamichi Kohno, Koji Takahashi, Yasuyuki Takata

研究成果: ジャーナルへの寄稿記事

3 引用 (Scopus)

抄録

Boiling suffers from inefficient intermittent cycles of bubble generation under subatmospheric conditions. Such deterioration in heat transfer rates can be alleviated but not completely eliminated by use of mixed-wettability (biphilic) surfaces. Here we study bubble dynamics on a single hydrophobic spot in low-pressure pool boiling. The results reveal an interesting transition in bubble departure behavior from the surface-driven mode to the drag-driven mode, which correlates closely with the dynamic state of the three-phase contact line on the surface. Based on the force-balance argument, a simple model is derived to map the contact-line mobility during bubble growth. It is found that below a certain threshold pressure, the bubble base expansion is increasingly likely to overcome the strong pinning of the contact line at the interface between the hydrophobic and hydrophilic regions. That could lead to total removal of vapor residues from the surface and cause deactivation of the nucleation site, which portends the eventual takeover of intermittent boiling on the biphilic surface.

元の言語英語
ページ(範囲)715-720
ページ数6
ジャーナルInternational Journal of Heat and Mass Transfer
126
DOI
出版物ステータス出版済み - 11 1 2018

Fingerprint

Bubbles (in fluids)
boiling
Contacts (fluid mechanics)
Boiling liquids
bubbles
wettability
deterioration
deactivation
drag
Drag
Deterioration
Wetting
Nucleation
low pressure
heat transfer
Vapors
nucleation
vapors
Heat transfer
cycles

All Science Journal Classification (ASJC) codes

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

これを引用

@article{5ffbeacc7d9d41fbbec4f0b2cac4a573,
title = "Depinning of bubble contact line on a biphilic surface in subatmospheric boiling: Revisiting the theories of bubble departure",
abstract = "Boiling suffers from inefficient intermittent cycles of bubble generation under subatmospheric conditions. Such deterioration in heat transfer rates can be alleviated but not completely eliminated by use of mixed-wettability (biphilic) surfaces. Here we study bubble dynamics on a single hydrophobic spot in low-pressure pool boiling. The results reveal an interesting transition in bubble departure behavior from the surface-driven mode to the drag-driven mode, which correlates closely with the dynamic state of the three-phase contact line on the surface. Based on the force-balance argument, a simple model is derived to map the contact-line mobility during bubble growth. It is found that below a certain threshold pressure, the bubble base expansion is increasingly likely to overcome the strong pinning of the contact line at the interface between the hydrophobic and hydrophilic regions. That could lead to total removal of vapor residues from the surface and cause deactivation of the nucleation site, which portends the eventual takeover of intermittent boiling on the biphilic surface.",
author = "Biao Shen and Masayuki Yamada and Tomosuke Mine and Sumitomo Hidaka and Masamichi Kohno and Koji Takahashi and Yasuyuki Takata",
year = "2018",
month = "11",
day = "1",
doi = "10.1016/j.ijheatmasstransfer.2018.06.030",
language = "English",
volume = "126",
pages = "715--720",
journal = "International Journal of Heat and Mass Transfer",
issn = "0017-9310",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Depinning of bubble contact line on a biphilic surface in subatmospheric boiling

T2 - Revisiting the theories of bubble departure

AU - Shen, Biao

AU - Yamada, Masayuki

AU - Mine, Tomosuke

AU - Hidaka, Sumitomo

AU - Kohno, Masamichi

AU - Takahashi, Koji

AU - Takata, Yasuyuki

PY - 2018/11/1

Y1 - 2018/11/1

N2 - Boiling suffers from inefficient intermittent cycles of bubble generation under subatmospheric conditions. Such deterioration in heat transfer rates can be alleviated but not completely eliminated by use of mixed-wettability (biphilic) surfaces. Here we study bubble dynamics on a single hydrophobic spot in low-pressure pool boiling. The results reveal an interesting transition in bubble departure behavior from the surface-driven mode to the drag-driven mode, which correlates closely with the dynamic state of the three-phase contact line on the surface. Based on the force-balance argument, a simple model is derived to map the contact-line mobility during bubble growth. It is found that below a certain threshold pressure, the bubble base expansion is increasingly likely to overcome the strong pinning of the contact line at the interface between the hydrophobic and hydrophilic regions. That could lead to total removal of vapor residues from the surface and cause deactivation of the nucleation site, which portends the eventual takeover of intermittent boiling on the biphilic surface.

AB - Boiling suffers from inefficient intermittent cycles of bubble generation under subatmospheric conditions. Such deterioration in heat transfer rates can be alleviated but not completely eliminated by use of mixed-wettability (biphilic) surfaces. Here we study bubble dynamics on a single hydrophobic spot in low-pressure pool boiling. The results reveal an interesting transition in bubble departure behavior from the surface-driven mode to the drag-driven mode, which correlates closely with the dynamic state of the three-phase contact line on the surface. Based on the force-balance argument, a simple model is derived to map the contact-line mobility during bubble growth. It is found that below a certain threshold pressure, the bubble base expansion is increasingly likely to overcome the strong pinning of the contact line at the interface between the hydrophobic and hydrophilic regions. That could lead to total removal of vapor residues from the surface and cause deactivation of the nucleation site, which portends the eventual takeover of intermittent boiling on the biphilic surface.

UR - http://www.scopus.com/inward/record.url?scp=85048297436&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85048297436&partnerID=8YFLogxK

U2 - 10.1016/j.ijheatmasstransfer.2018.06.030

DO - 10.1016/j.ijheatmasstransfer.2018.06.030

M3 - Article

AN - SCOPUS:85048297436

VL - 126

SP - 715

EP - 720

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

SN - 0017-9310

ER -