希薄水素混合気の乱流燃焼速度と局所燃焼速度特性  [in Japanese] Turbulent Burning Velocity and Local Burning Velocity Characteristics of Lean Hydrogen Mixtures  [in Japanese]

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Author(s)

Abstract

Comprehension of the turbulent burning velocity for lean hydrogen mixtures is inevitable in the improved design of hydrogen engines. The present study is performed to examine experimentally the turbulent burning velocity of lean hydrogen mixtures whose laminar burning velocity S_<LO> and equivalence ratio φ are varied extensively from 15 to 35 cm/s and approximately 0.9 to 0.3, respectively. The measured turbulent burning velocities at the same turbulence intensity show to increase as φ decreases until about 0.5. Those, however, does not show such increase when φ becomes lower than about 0.5, regardless of S_<LO>. This phenomenon is discussed by the observation of turbulent flame structure and the estimation of Markstein number. The estimation of the mean local burning velocity of the turbulent flame is made also taking account of the preferential diffusion. It is found that their tendencies with φ is changed when φ becomes about 0.5.

Journal

  • Transactions of the Japan Society of Mechanical Engineers. Series B.

    Transactions of the Japan Society of Mechanical Engineers. Series B. 71(701), 275-281, 2005-01-25

    The Japan Society of Mechanical Engineers

References:  15

Cited by:  1

Codes

  • NII Article ID (NAID)
    110005051399
  • NII NACSIS-CAT ID (NCID)
    AN00187441
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03875016
  • NDL Article ID
    7230917
  • NDL Source Classification
    ZN11(科学技術--機械工学・工業)
  • NDL Call No.
    Z16-109
  • Data Source
    CJP  CJPref  NDL  NII-ELS 
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