Active control of boiling heat transfer using magnetic functional fluid

• Project/Area Number: 16H07335
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Fluid engineering
• Research Institution: Doshisha University
• Principal Investigator: Yamasaki Haruhiko 同志社大学, 研究開発推進機構, 助教 (10780900)
• Project Period (FY): 2016-08-26 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 磁気機能性流体 / 沸騰熱伝達 / 気液二相流 / 数値シミュレーション / 能動制御 / 沸騰気泡 / 非共沸 / ＣＩＰ法 / Level Set 法 / 沸騰熱輸送

Outline of Final Research Achievements

It is found that volume of vapor bubble under non-uniform magnetic field decrease with increase of magnetic field intensity by both ways of electromagnetic induction method and optical visualization using a near infrared ray. Numerical simulation revealed that surface tension and magnetic buoyancy are dominant for bubble detachment
By applying non-uniform magnetic field to the heater surface, the heat transfer enhanced up to 13 % in fully developed nucleate boiling region. It is possible to actively control of boiling heat transfer by applying non-uniform magnetic field.

Research Products

• [Journal Article] Numerical Simulation of Bubble Deformation in Magnetic Fluids by Finite Volume Method (2017)
  • Author(s): Haruhiko Yamasaki and Hiroshi Yamaguchi
  • Journal Title: Journal of Magnetism and Magnetic Materials Volume: 431 Pages: 164-168
  • DOI: 10.1016/j.jmmm.2016.10.012
  • Peer Reviewed / Open Access
• [Presentation] Behavior of Bubble Deformation from Orifice in Magnetic Fluid (2017)
  • Author(s): H. Yamasaki, M. Ueta and H. Yamaguchi
  • Organizer: The Ninth JSME-KSME Thermal and Fluids Engineering Conference
  • Int'l Joint Research
• [Presentation] Bubble Transfer by Magnetic Fluid and Its Application (2017)
  • Author(s): H. Yamasaki and H. Yamaguchi
  • Organizer: The 7th International Workshop of Energy Conversion
  • Int'l Joint Research
• [Presentation] Bubble Behavior in Magnetic Fluid and Its Applications (2017)
  • Author(s): H. Yamasaki
  • Organizer: Taiwan-Japan International Conference on Magnetic Fluids 2017
  • Int'l Joint Research / Invited
• [Presentation] 磁性流体を用いた気体流量制御装置 (2016)
  • Author(s): 山崎晴彦
  • Organizer: 磁性流体連合講演会
  • Place of Presentation: 北海道大学札幌キャンパス 百年記念会館(北海道，札幌)
  • Year and Date: 2016-12-08
• [Presentation] Controlling gas flow in magnetic fluid (2016)
  • Author(s): Haruhiko Yamasaki
  • Organizer: Thirteenth International Conference on Flow Dynamics
  • Place of Presentation: Sendai International Center (Miyagi, Sendai)
  • Year and Date: 2016-10-08
  • Int'l Joint Research