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Dynamical Relationship between the Propogation Speed and Surface Properties of Turbulent Premixed Flames

Dynamical Relationship between the Propogation Speed and Surface Properties of Turbulent Premixed Flames
湍流预混火焰传播速度与表面特性的动力学关系
批准号:
9714052
负责人:
Tae-Woo Lee
金额:
$16.5万
依托单位:
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1998
资助国家:
美国
项目状态:
已结题
起止时间:
1998-03-15 至 2001-08-31

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中文摘要
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英文摘要
Abstract - Lee This effort explores a possible dynamic relationship between the propagation speed and surface properties of turbulent premixed flames. Both flame surface properties and propagation speed are measured directly in fixed burner geometries. Recent findings of several researchers show that the rate of increase of the turbulent flame surface area is substantially lower than that for the observed flame speeds, casting doubt on Damkohler's assumption that the flame speed is proportional to the wrinkled flame surface area. This study addresses the source of this discrepancy and also gives fundamental insight into the mechanisms that cause the flame speed to increase as flame surface properties change with increasing turbulence. Two burner geometries are used: a pulsed-flame flow reactor that produces a freely propagating turbulent premixed flame, and a coaxial jet flame burner that stabilizes highly-turbulent premixed flames. Diagnostics include high-speed photography, conditional laser Doppler velocimetry for flame speed measurements, and two- and three-dimensional imaging for flame surface properties.
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NER: Nanoparticle-Filled Liquid Fuels for Efficient Energy Conversion
  • 批准号:
    0608850
  • 项目类别:
    Standard Grant
  • 资助金额:
    $0.0万
  • 财政年份:
    2006
  • 负责人:
    Tae-Woo Lee
  • 依托单位:
Fourier-Transform Infrared Spectrometer for Combustion Studies
  • 批准号:
    9732803
  • 项目类别:
    Standard Grant
  • 资助金额:
    $3.67万
  • 财政年份:
    1998
  • 负责人:
    Tae-Woo Lee
  • 依托单位:
RESEARCH INITIATION AWARD: Partially-Premixed Turbulent Flames: Structure and Pollutant Emission Characteristics
  • 批准号:
    9409639
  • 项目类别:
    Standard Grant
  • 资助金额:
    $9.91万
  • 财政年份:
    1994
  • 负责人:
    Tae-Woo Lee
  • 依托单位:
海外基金