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Study on cool-flame spread using microgravity conditions for reconsideration of flame holding mechanism

Research Project

Project/Area Number 19K04843
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 24010:Aerospace engineering-related
Research InstitutionNihon University

Principal Investigator

NOMURA Hiroshi  日本大学, 生産工学部, 教授 (30246847)

Co-Investigator(Kenkyū-buntansha) 田辺 光昭  日本大学, 理工学部, 教授 (90291707)
菅沼 祐介  日本大学, 生産工学部, 准教授 (60739035)
齊藤 允教  日本大学, 理工学部, 准教授 (20801020)
Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords噴霧燃焼 / 冷炎 / 燃え広がり / 燃料液滴列 / 予蒸発予混合燃焼器 / 微小重力環境 / 冷炎燃え広がり / 微小重力環境利用 / 液滴列
Outline of Research at the Start

航空機用ガスタービンのNOx排出量削減や高熱効率化は急務な課題であり,こうした背景から進められているコアエンジンの小型高出力化や希薄予混合燃焼方式の導入は,どちらも燃焼器における逆火現象を誘発しやすい.噴霧火炎基部で起こる燃料液滴間の火炎燃え広がり現象を把握することが燃焼器の設計要件を明らかにするためには必要である.本研究では,噴霧火炎基部や燃料予蒸発管内で起こりうる燃料液滴の冷炎点火・燃え広がりに着目し,噴霧を単純化した燃料液滴列を対象にし,基礎的な研究を行う.軸対称な火炎燃え広がりが実現される微小重力環境を利用した実験を行うことで,数値シミュレーションの検証を容易にする.

Outline of Final Research Achievements

Cool-flame spread along a decane droplet array was observed successfully under microgravity conditions and its spread speed was measured. The time when the slope of squared droplet diameter history changes remarkably was defined as the time when a cool flame reached the measured droplet. The cool flame spread speed was measured from the relationship between the droplet ignition time and the droplet positions for the second to sixth droplets. In the case that the initial droplet diameter and the droplet spacing were 0.75 mm and 2 mm respectively, the cool flame spread speed was 17.9 mm/s. The cool flame spread speed of the droplet spacing of 4 mm was larger than that of 2 mm. Cool flame spread along a decane droplet array of the initial diameter of 1 mm was numerically simulated successfully.

Academic Significance and Societal Importance of the Research Achievements

燃料液滴列の冷炎燃え広がりに着目し,噴霧を単純化した燃料液滴列を対象に基礎的な研究を行った.軸対称な火炎燃え広がりが実現される微小重力環境を利用した実験を行うことで,数値シミュレーションの検証を容易にした.冷炎点火温度を下回る温度の雰囲気において,強制点火装置により点火した冷炎が燃料液滴列を燃え広がる現象を初めて明らかにした.また,その現象を数値シミュレーションでも実現させた.予蒸発管の作動条件で冷炎燃え広がりが起こるのか否かなど,噴霧燃焼器で冷炎点火・燃え広がりが起こる条件を明らかにすることにより,その後に発生する熱炎の挙動を現在より正しく予測できるようになると考える.

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (33 results)

All 2024 2023 2022 2021 2020 2019 Other

All Int'l Joint Research (3 results) Journal Article (8 results) (of which Peer Reviewed: 8 results,  Open Access: 6 results) Presentation (21 results) (of which Int'l Joint Research: 3 results) Book (1 results)

  • [Int'l Joint Research] Bremen University/DLR(ドイツ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Bremen University/DLR(ドイツ)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] ブレーメン大学/DLR(ドイツ)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Development of Forced Cool-Flame Ignition and Detection Device for a Fuel Droplet2022

    • Author(s)
      Iku SAITO, Shogo SHINKAI, Hiroshi NOMURA, Yusuke SUGANUMA
    • Journal Title

      International journal of microgravity science and application

      Volume: 39 Issue: 3 Pages: 390303

    • DOI

      10.15011/jasma.39.390303

    • ISSN
      2188-9783
    • Year and Date
      2022-07-31
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of products of low temperature oxidation reaction on NOx reduction in HC-SCR system2022

    • Author(s)
      ku Saito, Hodaka Sano, Hiroshi Nomura, Yusuke Suganuma
    • Journal Title

      Proc. Combust. Inst.

      Volume: 39 Issue: 4 Pages: 1-8

    • DOI

      10.1016/j.proci.2022.07.250

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Study on spatial-temporal dynamics of cool flame oscillation phenomenon occurred around a fuel droplet array by using variational auto-encoder2022

    • Author(s)
      Kazuki Iemura, Masanori Saito, Yusuke Suganuma, Masao Kikuchi, Yuko Inatomi, Hiroshi Nomura, Mitsuaki Tanabe
    • Journal Title

      Proc. Combust. Inst.

      Volume: 39 Issue: 2 Pages: 1-10

    • DOI

      10.1016/j.proci.2022.09.047

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Numerical Prediction of the Spontaneous Ignition of Cool Flame for the Microgravity Experiment by Using Sounding Rocket2021

    • Author(s)
      Masanori SAITO, Yurie OHNO, Hirotaka KATO, Yusuke SUGANUMA, Akiyo TAKAHASHI, Masato MIKAMI, Masao KIKUCHI, Takehiko ISHIKAWA, Yuko INATOMI, Kenichi TAKAHASHI, Osamu MORIUE, Hiroshi NOMURA, and Mitsuaki TANABE
    • Journal Title

      Trans. JSASS Aerospace Tech. Japan

      Volume: 19 Pages: 539-544

    • NAID

      130008062299

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 低温酸化反応を用いた軽油改質技術によるHC-SCRの開発2021

    • Author(s)
      齋藤 郁,佐藤 信也, 野村 浩司,菅沼 祐介,三阪 遥
    • Journal Title

      自動車技術会論文集

      Volume: 52 Pages: 955-960

    • NAID

      130008074911

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Scope of PHOENIX-2 Sounding Rocket Experiment, “Cool Flame Dynamics in Multi-droplet Ignition”2020

    • Author(s)
      Mitsuaki TANABE, Masanori SAITO, Yusuke SUGANUMA, Masato MIKAMI, Masao KIKUCHI, Yuko INATOMI, Osamu MORIUE, Hiroshi NOMURA
    • Journal Title

      International journal of microgravity science and application

      Volume: 37 Issue: 4 Pages: 370401

    • DOI

      10.15011/jasma.37.4.370401

    • NAID

      130007934388

    • ISSN
      2188-9783
    • Year and Date
      2020-10-31
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hardware Development for Cool Flame Combustion Experiment of Fuel Droplets using Sounding Rocket2020

    • Author(s)
      菅沼 祐介, 齊藤 允教, 後藤 芳正, 山村 宜之, 山本 信, 野倉 正樹, 三上 真人, 菊池 政雄, 稲富 裕光, 森上 修, 野村 浩司, 田辺 光昭
    • Journal Title

      International journal of microgravity science and application

      Volume: 37 Issue: 4 Pages: 370403

    • DOI

      10.15011/jasma.37.4.370403

    • NAID

      130007934427

    • ISSN
      2188-9783
    • Year and Date
      2020-10-31
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Spontaneous Ignition Behavior of n-Decane Fuel Droplet Array near Ignition Limit2019

    • Author(s)
      Masanori SAITO, Yurie OHNO, Hirotaka KATO, Yusuke SUGANUMA, Masato MIKAMI, Masao KIKUCHI, Yuko INATOMI, Takehiko ISHIKAWA, Osamu MORIUE, Hiroshi NOMURA, Mitsuaki TANABE
    • Journal Title

      Int. J. Microgravity Sci. Appl.

      Volume: 36 Pages: 1-8

    • NAID

      130007760918

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 複数液滴の冷炎ダイナミクスに関する観測ロケット実験(PHOENIX-2)2024

    • Author(s)
      野村浩司, 菅沼祐介, 齊藤允教, 田辺光昭, 髙橋晶世, 髙橋賢一, 森上修, 三上真人, 後藤芳正, 山村宜之, 野倉正樹, 山本信, Eigenbrod Christian, 石川毅彦, 菊池政雄, 嶋田徹, 稲富裕光
    • Organizer
      第38回宇宙環境利用シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] 微小重力場における高温雰囲気中での燃料液滴列の 冷炎燃え広がり2023

    • Author(s)
      藤枝佑毅, 菅沼祐介, 齊藤, 田辺光昭, 野村浩司
    • Organizer
      日本マイクログラビティ応用学会第35回学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] デカン単一液滴蒸発の非定常性に及ぼす雰囲気圧力の影響に関する微小重力実験2022

    • Author(s)
      中川 光葉(日本大),野村 浩司,菅沼 祐介
    • Organizer
      第31回微粒化シンポジウム
    • Related Report
      2022 Research-status Report
  • [Presentation] 低温酸化反応を利用したNOx低減技術の検討2022

    • Author(s)
      佐野 穂高,齋藤 郁,野村 浩司,菅沼 祐介
    • Organizer
      第60回燃焼シンポジウム
    • Related Report
      2022 Research-status Report
  • [Presentation] 微小重力環境を用いた複数液滴の冷炎ダイナミクスの解明 -PHOENIX2プロジェクト状況進捗報告-2022

    • Author(s)
      菅沼祐介,齊藤允教,菊池政雄, 稲富裕光, 三上真人, 森上修, 野村浩司, 田辺光昭
    • Organizer
      日本マイクログラビティ応用学会第34回学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] 強制点火装置を用いた冷炎燃え広がり現象の観察2022

    • Author(s)
      藤枝佑毅,齋藤郁,齊藤允教,菅沼祐介,田辺光昭,野村浩司
    • Organizer
      日本マイクログラビティ応用学会第34回学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Influence of Difference in Ambient Temperature and Inter-Droplet Distance on Cool Flame Spread Behavior of Fuel Droplet Array2022

    • Author(s)
      Hideaki Ikezawa, Masanori Saito, Yusuke Suganuma, Mitsuaki Tanabe, Hiroshi Nomura
    • Organizer
      COSPAR-2022
    • Related Report
      2022 Research-status Report
  • [Presentation] 複数液滴の冷炎ダイナミクスに関する観測ロケット実験"PHOENIX-2"進捗報告2022

    • Author(s)
      菅沼祐介,齊藤允教,野村浩司,田辺光昭,髙橋晶世,髙橋賢一,森上修,三上真人,後藤芳正,山村宜之,山本信,野倉正樹,Eigenbrod Christian,菊池政雄,嶋田徹,稲富裕光
    • Organizer
      第36回宇宙環境利用シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] Improvement of HC-SCR Performance by Fuel Reforming Using a Low Temperature Oxidation2021

    • Author(s)
      Iku Saito, Shinya Sato, Hiroshi Nomura, Yusuke Suganuma, Haruka Misaka
    • Organizer
      SAE world Congress Express
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 燃料液滴列の冷炎燃え広がり実験用点火装置の開発2021

    • Author(s)
      新海祥悟,齋藤 郁,菅沼祐介, 野村浩司
    • Organizer
      日本マイクログラビティ応用学会第33回学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 燃料液滴列のおける冷炎伝播に関する数値解析2021

    • Author(s)
      池澤英明,家村和輝,齊藤允教,菅沼祐介、田辺光昭、野村浩司
    • Organizer
      日本マイクログラビティ応用学会第33回学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] PHOENIX-2,-複数液滴の冷炎ダイナミクスの解明-,プロジェクト状況報告2021

    • Author(s)
      菅沼祐介,齊藤允教,菊池政雄,稲富裕光,三上真人,森上修,野村浩司,田辺光昭
    • Organizer
      日本マイクログラビティ応用学会第33回学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 複数液滴の冷炎ダイナミクスに関する観測ロケット実験"PHOENIX-2"進捗報告2021

    • Author(s)
      田辺光昭,齊藤允教,菅沼祐介,野村浩司,髙橋晶世,髙橋賢一,森上修,三上真人,後藤芳正,山村宜之,山本信,野倉正樹,Eigenbrod Christian,石川毅彦,菊池政雄,嶋田徹,稲富裕光
    • Organizer
      第35回宇宙環境利用シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] 複数液滴の冷炎ダイナミクスに関する観測ロケット実験"PHOENIX-2"(液滴燃焼実験装置の開発)2021

    • Author(s)
      菅沼祐介,齊藤允教,後藤芳正,山村宜之,山本信,野倉正樹,菊池政雄,稲富裕光,三上真人,森上修,野村浩司,田辺光昭
    • Organizer
      第35回宇宙環境利用シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] 液滴列を燃え広がる冷炎の挙動観察微小重力実験装置2020

    • Author(s)
      郡司直人,菅沼祐介,野村浩司
    • Organizer
      日本マイクログラビティ応用学会第32回学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 単一燃料液滴蒸発の非定常性に及ぼす初期液滴直径の影響2020

    • Author(s)
      清水 雄斗,野村浩司,菅沼祐介
    • Organizer
      第58回燃焼シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] 微小自由液滴の冷炎点火観察装置の開発2019

    • Author(s)
      齋藤 郁,野村浩司,菅沼祐介
    • Organizer
      第57回燃焼シンポジウム
    • Related Report
      2019 Research-status Report
  • [Presentation] 微小重力環境を用いた高温.高圧環境における正デカン単一液滴の蒸発と自然対流の影響非定常性に関する実験的研究2019

    • Author(s)
      村上洋輔,野村浩司,菅沼祐介
    • Organizer
      第57回燃焼シンポジウム
    • Related Report
      2019 Research-status Report
  • [Presentation] 液滴列から生じる冷炎の自発点火位置に及ぼすルイス数の影響2019

    • Author(s)
      齊藤允教,大野友利恵,加藤宏隆,菅沼祐介,髙橋晶世,三上真人,菊池政雄,石川毅彦,稲富裕光,髙橋賢一,森上修,野村浩司,田辺光昭
    • Organizer
      日本マイクログラビティ応用学会第31回学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Aircraft Parabolic Flight Experiments on Spontaneous Ignition of Cool Flame for Sounding Rocket Space Experiments2019

    • Author(s)
      Yusuke SUGANUMA, Masanori SAITO, Masato MIKAMI, Masao KIKUCHI,Takehiko ISHIKAWA Yuko INATOMI, Osamu MORIUE, Hiroshi NOMURA, Mitsuaki TANABE
    • Organizer
      32rd International Symposium on Space Technology and Science
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Experimental study on unsteadiness of n-decane single droplet evaporation and effect of natural convection on droplet evaporation at high pressures and temperatures2019

    • Author(s)
      Yosuke Murakami,Hiroshi Nomura,Yusuke Suganuma
    • Organizer
      32rd International Symposium on Space Technology and Science
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Book] High-Pressure Flow for Propulsion Applications, Chapter 1: Microgravity Research on Quasi-Steady and Unsteady Combustion of Fuel Droplet at High Pressures2020

    • Author(s)
      Hiroshi Nomura, Shinji Nakaya, Mitsuhiro Tsue
    • Total Pages
      787
    • Publisher
      AIAA
    • ISBN
      9781624105807
    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2025-01-30  

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