Mechanism of Excess-enthalpy Combustion by Miniaturization of Micro-jet Flames

• Project/Area Number: 26289041
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Thermal engineering
• Research Institution: Toyohashi University of Technology
• Principal Investigator: Nakamura Yuji 豊橋技術科学大学, 工学(系)研究科(研究院), 准教授 (50303657)
• Co-Investigator(Renkei-kenkyūsha): MATSUOKA Tsuneyoshi 豊橋技術科学大学, 大学院工学研究科・機械工学系, 助教 (90633040)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000); Fiscal Year 2016: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2015: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2014: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
• Keywords: マイクロ燃焼 / バーナ火炎 / 拡散火炎 / 超過エンタルピー燃焼 / 燃焼 / マイクロフレーム / 超過エンタルピー / 燃焼安定性 / 熱工学

Outline of Final Research Achievements

In order to ensure the presence of self-stabilized concept for miniaturization, two approaches were taken; first, we introduce the precise numerical simulation with detail kinetics model how the flame interacts with burner and what is the key reaction to it. Additionally we have proposed the evaluation measure of excess-enthalpy under various kinds of fuel and ejecting condition. Second is to examine the character of the thin-film (Pt-WO3)-type gas sensor, which might be useful to understand the species (H2) distribution inside the microburner. So called "gaschromic reaction" is utilized for this purpose and the fundamental characters of this sensor are properly examined/reported.

Research Products

• [Int'l Joint Research] Univeristy of Kentucky(米国)
• [Int'l Joint Research] University of Kentucky(米国)
• [Journal Article] Flame Base Structures of Micro-jet Hydrogen/Methane Diffusion Flames (2017)
  • Author(s): Gao, J., Hossain, A., and Nakamura, Y.
  • Journal Title: Proceedings of Combustion Institute Volume: 36 Issue: 3 Pages: 4209-4216
  • DOI: 10.1016/j.proci.2016.08.034
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] A Numerical Study on Heat-recirculation assisted Combustion for Small Scale Jet Diffusion Flames at Near-extinction Condition (2017)
  • Author(s): Gao, J., Hossain, A., Matsuoka, T., and Nakamura, Y.
  • Journal Title: Combustion and Flame Volume: 178 Pages: 182-194
  • DOI: 10.1016/j.combustflame.2016.12.028
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Progress in small-scale combustion (2017)
  • Author(s): Nakamura, Y., Gao, J., and Matsuoka, T.
  • Journal Title: Journal of Thermal Science and Technology Volume: 12 Issue: 1 Pages: JTST0001-JTST0001
  • DOI: 10.1299/jtst.2017jtst0001
  • NAID: 130005292434
  • ISSN: 1880-5566
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Low-temperature Ignition of Dimethyl Ether: Transition from Cool Flame to Hot flame Promoted by Decomposition of HPMF (HO2CH2OCHO) (2016)
  • Author(s): Gao, J., and Nakamura, Y.
  • Journal Title: Combustion and Flame Volume: 165 Pages: 68-82
  • DOI: 10.1016/j.combustflame.2015.09.034
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] “Missing-link” in Flames as a Challenge for Smart-control of Combustion Systems (2015)
  • Author(s): 中村祐二
  • Journal Title: Journal of Smart Processing Volume: 4 Issue: 1 Pages: 30-35
  • DOI: 10.7791/jspmee.4.30
  • NAID: 130005119108
  • ISSN: 2186-702X, 2187-1337
  • Year and Date: 2015-01-20
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Thermal and Chemical Structures formed in the Micro Burner of Miniaturized Hydrogen-air Jet Flames (2015)
  • Author(s): Hossain, A., and Nakamura, Y.
  • Journal Title: Proceedings of the Combustion Institute Volume: 35 Issue: 3 Pages: 3413-3420
  • DOI: 10.1016/j.proci.2014.08.008
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Effect of Ambient Oxygen and Temperature on Gaschromic Properties of Pt/WO3 Thin Film exposed by Hydrogen (2017)
  • Author(s): Yashiki, K., Matsuoka, T., and Nakamura, Y.
  • Organizer: 26th International Colloquium on Dynamics of Explosion and Reactive Systems (26th ICDERS)
  • Place of Presentation: Boston, MA
  • Year and Date: 2017-07-30
  • Int'l Joint Research
• [Presentation] ガスクロミック反応を利用した狭流路内の薄膜水素センシングに向けた基礎検討 (2016)
  • Author(s): 屋敷健太，松岡常吉，中村祐二
  • Organizer: 第54回燃焼シンポジウム
  • Place of Presentation: 仙台
  • Year and Date: 2016-11-23
• [Presentation] A Numerical Study on the Stabilization Mechanism of Micro-jet Hydrogen Diffusion Flames (2015)
  • Author(s): Gao, J., Hossain, A., and Nakamura, Y.
  • Organizer: 第53回燃焼シンポジウム
  • Place of Presentation: つくば
  • Year and Date: 2015-11-16
• [Presentation] 非予混合マイクロフレームの火炎位置におよぼす温度と酸素濃度の影響 (2014)
  • Author(s): 中條 雄，松岡常吉，有賀雄大，平沢太郎，中村祐二，野田 進
  • Organizer: 第52回燃焼シンポジウム
  • Place of Presentation: 岡山
  • Year and Date: 2014-12-03 – 2014-12-05
• [Presentation] Effect of Air Temperature on Flame Base Position of Miniature Jet Flames (2014)
  • Author(s): Chujo, T., Matsuoka, T., Noda, S., Hirasawa, T., and Nakamura, Y.
  • Organizer: Work-In Progress Poster Colloquium at 35th International Symposium on Combustion
  • Place of Presentation: 米国サンフランシスコ
  • Year and Date: 2014-08-03 – 2014-08-08
• [Remarks] Novel control method of combustion by "microflame"
  • URL: http://www.me.tut.ac.jp/ece/microflame_en.html
• [Remarks]
  • URL: http://www.tut.ac.jp/university/faculty/me/5478_seeds1.html
• [Remarks]
  • URL: http://www.tut.ac.jp/english/newsletter/research_highlights/pdf/research-highlights_research03.pdf