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

On the Mechanism of Rapid Flame Propagation in a Rotating Flow

Research Project

Project/Area Number 03650172
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Thermal engineering
Research InstitutionThe University of Tokyo

Principal Investigator

ISHIZUKA Satoru  The University of Tokyo Faculty of Engineering Associate Professor, 工学部, 助教授 (70129162)

Co-Investigator(Kenkyū-buntansha) HIRANO Toshisuke  The University of Tokyo Faculty of Engineering Professor, 工学部, 教授 (70007615)
Project Period (FY) 1991 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1992: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1991: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsFlame Propagation / Vortex Bursting / Rotating Flow / Vortex / Swirl-type Combustor / Pressure Distribution / ボルテックス・バーステイング / ボルテックス・バ-ステイング / 内燃機関
Research Abstract

The rapid flame propagation in a rotating flow is explained on the vortex bursting mechanism, in which it is considered that the hot burned gas of low density is forcibly involved into the unburned gas mixture of high density. In the first year, the relation between the flame speed and the rotating gas speed was examined and it was pointed out that quantitatively the theory could not explain the results.
In the next year, the pressure distribution across the flame front was exaimed to substantiate the theory in which the pressure ahead of the flame is assumed to be lower than that behind the flame, because the centrifugal force is weak in the hot burned gas of low density, and hence, the pressure on the axis of rotation cannot be decreased much as compared with the ambient pressure, whereas the centrifugal force is strong in the unburned gas of high density, and hence, the pressure on the axis of rotation becomes much lower than the ambient pressure. Resultingly, the pressure behind the flame becomes higher than the pressure ahead of the flame.
Using a high-response, micro-diffential manometer and a transient memory, the pressure distribution was measured for the flame propagating in a rotating mixture. For comparison, the pressure distribution was also measured for the flames propagating in a quiescent combustible mixture and in a non-rotating mixture stream. The results show that, as the theory predicts, the predicts, the pressure ahead of the flame is lower than the pressure behind the flame. However, it is shown that the flame apeed is only one half or one third the predicted speed. This is confirmed by the additonal experiments this year. The results obtained in the first year have been published in Progress in Astronautics and Aeronautics, and those in the last year will appear in Combustion Science and Technolgy.

Report

(3 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] Satoru ISHIZUKA: "Vortex-Induced Flame Propagation" Book of Abstracts of the XIth International Workshop on Mathematical Methods in Combustion, Tukuba, July 26-27. 58-60 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Satoru ISHIZUKA and Toshisuke HIRANO: "Behavior of Propagating Flame in a Rotating Flowfield" Abstracts and Information of the 13th International Colloquium on Dynamics of Explosions and Reactive Systems, Nagoya, July 28-August 2. 141- (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Satoru ISHIZUKA: "Flame Propagation in a Vortex Flow" Proceedings of the Russian-Japanese Symposium on Combustion, Khabarovsk Polytechnical Institute. 15-20 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 石塚 悟、平野 敏右: "回転予混合気流中を伝播する火炎の空気力学的構造" 第30回燃焼シンポジウム前刷集. 103-105 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Satoru ISHIZUKA and Toshisuke HIRANO: "Behavior of Propagating Flame in a Rotating Flowfield" Progress in Astronautics and Aeronautics, AIAA. 151. 284-306 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 石塚 悟、平野 敏右: "回転予混合気流中を伝播する火炎の空気力学的構造" 燃焼と科学と技術、掲載予定.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Satoru ISHIZUKA: "Vortex-Induced Flame Propagation" Book of Abstracts of the XIth International Workshop on Mathematical Methods in Combustion, Tukuba, July 26-27. 58-60 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Satoru ISHIZUKA and Toshisuke HIRANO: "Behavior of Propagating Flame in a Rotating Flowfield" Abstracts and Information of the 13th International Colloquium on Dynamics of Explosions and Reactive Systems, Nagoya, July 28-August 2.141 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Satoru ISHIZUKA: "Flame Propagation in a Vortex Flow" Proceedings of the Russian-Japanese Symposium on Combustion, Khabarovsk Polytechnical Institute. 15-20 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Satoru ISHIZUKA and Toahisuke HIRANO: "Aerodynamuc Structure of a Propagating Flame in a Rotating Flow, (in Japanese)" Pre-print of the 30th Symposium on Combustion. 103-105 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Satoru ISHIZUKA and Toshisuke HIRANO: "Behavior of Propagating Flame in a Rotating Flowfield" Progress in Astronautics and Aeronautics. Vol.151, AIAA. 284-306 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Satoru ISHIZUKA and Toshisuke HIRANO: "Aerodynamuc Structure of a Propagating Flame in a Rotating Flow, (in Japanese)" Combustion Science and Technology, Japanese Edition.(to appear).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 石塚 悟、平野 敏右: "回転予混合気流中を伝播する火炎の空気力学的構造" 第30回燃焼シンポジウム前刷集. 103-105 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Satoru ISHIZUKA and Toshisuke HIRANO: "Behavior of Propagating Flame in a Rotating Flowfield" to appear in Progress in Astronautics and Aeronautics, AIAA series.(1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] Ishizuka,S.and Hirano,T.: "Behavior of Propagating Flames in a Rotating Flow Field" Abstracts and Informations of 13th International Colloquium on Dynamics of Explosions and Reactive Systems,July 28ーAugust 2,1991,Nagoya.141 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Ishizuka,S.: "VortexーInduced Flame Propagation" Book of Abstracts,XIth International Workshop on Mathematical Methods in Combustion. 58-60 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Ishizuka,S.and Hirano,T.: "Aerodynamic Structure of the Propagating Flame in a'Vortex Flow" submitted to the 24th International Symposium on Combustion,July,1992,Australia.(1992)

    • Related Report
      1991 Annual Research Report

URL: 

Published: 1991-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi