• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Laser-induced fluorescence measurement of gas-liquid multiphase diffusion flames in high-pressure rocket combustion

Research Project

Project/Area Number 20K21042
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 24:Aerospace engineering, marine and maritime engineering, and related fields
Research InstitutionTohoku University

Principal Investigator

Kobayashi Hideaki  東北大学, 流体科学研究所, 教授 (30170343)

Co-Investigator(Kenkyū-buntansha) 早川 晃弘  東北大学, 流体科学研究所, 准教授 (90709156)
Project Period (FY) 2020-07-30 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
KeywordsOH-PLIF / ロケット燃焼 / 水素燃焼 / 高圧燃焼 / 気液混相燃焼
Outline of Research at the Start

本研究では,ロケット燃焼を想定した高圧環境における気液混相水素燃焼の基礎現象の解明に向けたOH-PLIFレーザー分光計測技術の開発を行う.高圧ロケット燃焼は実験自体が困難であることや極限環境下における非接触計測技術が未発達であることからその現象が十分に解明されておらず,数値解析研究の検証データも限られている.OH-PLIF計測により取得できる瞬時火炎断面の情報は,他の計測手法で得ることは困難であり,高圧燃焼器の設計に有益な基礎データとなる.本研究では高圧水素燃焼の強い自発光ならび液体水素からのミー散乱を抑制できるロケット燃焼環境のOH-PLIF計測に取り組む.

Outline of Final Research Achievements

OH planer-laser-induced fluorescence measurement for gas-liquid multiphase hydrogen combustion at high pressure and high temperature applicable for rocket combustion was developed. OH(2,2) fluorescence band measurements were performed for gas H2/O2 diffusion flames at up to 5.0 MPa, and a clear flame structure with S/N ratio greater than 4 was obtained. OH(2,2) fluorescence band measurement was also applied to the gas-liquid multiphase hydrogen/liquid oxygen combustion at 3.0 MPa, and the flame structure could be observed with S/N ratio of about 2. In combustion experiments of methane/oxygen/nitrogen premixed flames up to 0.5 MPa with oxygen enrichment up to 60%, OH(2,0) band excitation and bi-directional LIF technique were combined for quantitative measurement of OH concentration, and good agreement was obtained with numerical analysis.

Academic Significance and Societal Importance of the Research Achievements

ロケット推進系の高性能化,低コスト化に向けて技術開発が続けられているが,ロケット燃焼環境は100気圧,3000Kを超えるような超高圧高温環境であり,現象解明と燃焼数値解析の検証に活用できる計測技術が乏しい.計測技術の中でも平面レーザー誘起蛍光法は,火炎の断面に対してラジカル濃度分布を計測できることから,燃焼数値解析の検証に適しているものの,高圧下でS/Nが大きく低下する課題があった.本研究の成果はその適用範囲を大きく拡張しロケット燃焼技術の開発に貢献することが期待される.

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (6 results)

All 2021 2020

All Presentation (6 results) (of which Int'l Joint Research: 2 results)

  • [Presentation] OH Concentration Measurement Using Bi-directional OH(2,0) LIF on Flat Flames2021

    • Author(s)
      Yasuhiro Higuchi, Yoshio Nunome, Sadatake Tomioka, Tomita Takeo, Taku Kudo, Akihiro Hayakawa, Hideaki Kobayashi
    • Organizer
      13th Asia-Pacific Conference on Combustion
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Quantitative OH Concentration Measurement on Calibration Flat Flame Using Bi-directional OH(2,0) LIF2021

    • Author(s)
      Yasuhiro Higuchi, Yoshio Nunome, Sadatake Tomioka, Tomita Takeo, Taku Kudo, Akihiro Hayakawa, Hideaki Kobayashi
    • Organizer
      18th International Conference on Flow Dynamics
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] OH(2,0) 励起を用いた1次元定常火炎のOH濃度計測2021

    • Author(s)
      樋口靖浩,布目佳央,富岡定毅,富田健夫,工藤琢,早川晃弘,小林秀昭
    • Organizer
      日本機械学会東北支部 第57期秋季講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] A quantitative measurement of OH and flame temperature for a calibration burner operated at high-pressure and high-temperature2021

    • Author(s)
      3.Yasuhiro Higuchi, Yoshio Nunome, Sadatake Tomioka, Takeo Tomita, Taku Kudo, Akihiro Hayakawa and Hideaki Kobayashi
    • Organizer
      38th International Symposium on Combustion, (2021)
    • Related Report
      2020 Research-status Report
  • [Presentation] Towards the application of OH (2,0) PLIF to high-pressure mixed phase combustion2020

    • Author(s)
      1.Yasuhiro Higuchi, Yoshio Nunome, Sadatake Tomioka, Takeo Tomita, Taku Kudo, Akihiro Hayakawa and Hideaki Kobayashi
    • Organizer
      the17th International Conference on Flow Dynamics,(2020)
    • Related Report
      2020 Research-status Report
  • [Presentation] GH2/GO2シングルエレメント同軸噴射機における火炎基部のOH-PLIF計測2020

    • Author(s)
      2.樋口 靖浩,布目 佳央,富岡 定毅,冨田 健夫,工藤 琢,早川 晃弘,小林 秀昭
    • Organizer
      第58回燃焼シンポジウム
    • Related Report
      2020 Research-status Report

URL: 

Published: 2020-08-03   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi