Study of Effects of Surface Characteristics on Bubble Dynamics and Related Boiling Surface Optimization

• Project/Area Number: 26889044
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Thermal engineering
• Research Institution: Kyushu University
• Principal Investigator: SHEN BIAO 九州大学, カーボンニュートラル・エネルギー国際研究所, 学術研究員 (80730811)
• Project Period (FY): 2014-08-29 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: プール沸騰 / 親水撥水複合 / 沸騰開始 / 減圧下沸騰 / 数値シミュレーション / 拡散界面法 / マッハ・ツェンダー干渉計 / boiling heat transfer / wettability / superhydrophilicity / superhydrophobicity / bubble dynamics / dissolved air / Marangoni convection / subcooled boiling

Outline of Final Research Achievements

We have designed and fabricated a heterogeneous boiling surface with spatially varying wettability, which exhibits exceptional heat transfer performance. At atmospheric pressure, the onset of nucleate boiling is lowered significantly (to negative levels) on the enhanced surface. The facilitated boiling incipience extends boiling to low-heat-flux applications as an effective means of heat transfer. At reduced pressures, the technical limitation of large incipience temperature overshoots is greatly mitigated by using heterogeneous surfaces with mixed wettability.
Furthermore, we have performed a numerical study of phase transition of a two-component system by using a diffuse-interface method. The results show contrasting bubble behaviors with increasing concentrations of dissolved gas.

Research Products

• [Journal Article] Bubble activation from a hydrophobic spot at “negative“ surface superheats in subcooled boiling (2015)
  • Author(s): Shen, B., Suroto, B.J., Hirabayashi, S., Yamada, M., Hidaka, S., Kohno, M., Takahashi, K. and Takata, Y.
  • Journal Title: Applied Thermal Engineering Volume: 88 Pages: 230-230
  • DOI: 10.1016/j.applthermaleng.2014.10.054
  • Peer Reviewed / Int'l Joint Research
• [Presentation] 減圧下における撥水斑点加工面上の沸騰伝熱および気泡挙動 (2016)
  • Author(s): 山田将之
  • Organizer: 第53回日本伝熱シンポジウム
  • Place of Presentation: 大阪府大阪市
  • Year and Date: 2016-05-24
• [Presentation] Boiling heat transfer enhancement with hydrophobic islands at sub-atmospheric pressures (2016)
  • Author(s): Yamada, M.
  • Organizer: the 1st Pacific Rim Thermal Engineering Conference
  • Place of Presentation: Hawaii, USA
  • Year and Date: 2016-03-13
  • Int'l Joint Research
• [Presentation] Boiling heat transfer enhancement on heterogeneous surfaces with spatially varying wettability (2016)
  • Author(s): Shen, B.
  • Organizer: Workshop on Thermal Issues for Hydrogen and Related Energy Systems
  • Place of Presentation: Fukuoka, Japan
  • Year and Date: 2016-02-04
  • Int'l Joint Research / Invited
• [Presentation] Saturated boiling of water on biphilic surfaces under sub-atmospheric pressure (2015)
  • Author(s): Shen, B.
  • Organizer: The 14th UK Heat Transfer Conference
  • Place of Presentation: Edinburgh, UK
  • Year and Date: 2015-09-06
  • Int'l Joint Research
• [Presentation] サブクール状態における撥水斑点上の単一気泡の挙動におよぼす溶存空気の影響 (2015)
  • Author(s): 山田将之
  • Organizer: 第52回日本伝熱シンポジウム
  • Place of Presentation: 福岡県福岡市
  • Year and Date: 2015-06-03
• [Presentation] Pure subcooled boiling of waterobserved on a surface with mixed wettability (2015)
  • Author(s): Shen, B.
  • Organizer: International Workshop on Phase Change and Wetting Phenomena
  • Place of Presentation: Fukuoka, Japan
  • Year and Date: 2015-06-02
  • Int'l Joint Research / Invited
• [Presentation] Formation of air-rich bubbles on a superbiphilic surface in subcooled boiling (2015)
  • Author(s): Shen, B.
  • Organizer: The 9th International Conference on Boiling and Condensation Heat Transfer
  • Place of Presentation: Boulder, CO., USA
  • Year and Date: 2015-04-26
  • Int'l Joint Research
• [Presentation] Formation of air-rich bubbles on a superbiphilic surface in subcooled boiling (2015)
  • Author(s): Shen, B., Yamada, M., Orejon, D., Suroto, B.J., Hidata, S., Kohno, M., Takahashi, K., Takata, Y.
  • Organizer: 9th International Conference on Boiling and Condensation Heat Transfer
  • Place of Presentation: Boulder, CO., USA
  • Year and Date: 2015-04-26
• [Presentation] Pool boiling on a biphilic surface (2015)
  • Author(s): Shen, B.
  • Organizer: Workshop on thermal issues for hydrogen and related energy systems
  • Place of Presentation: Fukuoka, Japan
  • Year and Date: 2015-02-04
  • Invited
• [Presentation] Subcooled boiling on a heterogeneous surface with mixed wettability (2014)
  • Author(s): Shen, B.
  • Organizer: Workshop on thermo-fluidic dynamics at micro-/nano-scales, Shanghai Jiao Tong University
  • Place of Presentation: Shanghai, China
  • Year and Date: 2014-11-04
  • Invited