Measurements of Instantaneous Two-Dimensional Temperature Profiles in Turbulent Diffusion Flames.

• KOMIYAMA Masaharu

• KATOH Hiroyuki

• TAKAGI Toshimi

Bibliographic Information

Other Title

• 乱流拡散火炎の瞬時二次元温度分布測定
• ランリュウ カクサン カエン ノ シュンジ 2ジゲン オンド ブンプ ソクテイ

Abstract

Instantaneous planar temperature profiles were obtained by a Rayleigh scattering method using a CCD camera with an image intensifier which has 512×512 pixels and a Nd : YAG laser. The method was applied to nitrogen-diluted hydrogen (H₂ 30%+N₂ 70%) diffusion flames with various degrees of turbulence to investigate spatial features of instantaneous flame temperature in the diffusion flames. The results obtained are as follows. (1) The instantaneous maximum temperature tends to decrease when the Reynolds number or the average fuel velocity at the nozzle exit increases. (2) Temperature fluctuation appears at the inner region of the flame at low fuel velocity, which increases at inner and outer region of the flame with increase of fuel velocity. Temperature fluctuations of large spatial scales are predominant in the fames. (3) The high-temperature region is intermittent in a flame near extinction.

Journal

• TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B

  TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 62 (593), 361-367, 1996

  The Japan Society of Mechanical Engineers

Keywords

• Instantaneous Two-Dimensional Temperature Profiles

Details

• CRID: 1390282680870402304
• NII Article ID: 130004222037
• NII Article ID: 110002403369
• NII Book ID: AN00187441
• DOI: 10.1299/kikaib.62.361
• ISSN: 18848346
• ISSN: 03875016
• NDL BIB ID: 3916394
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3916394
• Web Site: http://www.jstage.jst.go.jp/article/kikaib1979/62/593/62_593_361/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed