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Time resolved measurements of the initial stages of fuel spray penetration

机译：燃油喷雾渗透初始阶段的时间分辨测量

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摘要

The period of diesel fuel spray injection from the start of injection up to 0.5 ms is investigated using ultra-high speed digital imaging. Contrary to the widely accepted idea of tip penetration exhibiting a linear dependence with time during the initial stages of spray development, the spray tip penetration is observed to follow a functional fit of the form S(t) =At~(3/2) right up until the tip velocity reaches its maximum value. After this, the spray tip penetration correlates well with previously established correlations found in the literature. Furthermore, the spray tip velocity immediately after start of injection is not observed to be constant but is found to be proportional to 2~(1/2). A collapse of the tip velocity curves is obtained when they are scaled by the peak velocity and corresponding time. Results are presented for non-evaporating diesel sprays injected into a constant volume chamber at various injection and chamber pressures.
机译：使用超高速数字成像技术研究了从喷射开始到0.5毫秒的柴油喷射喷雾的时间。与广泛接受的尖端渗透在喷雾形成的初始阶段随时间呈线性关系的想法相反，观察到喷雾尖端渗透遵循形式为S（t）= At〜（3/2）的函数拟合直到尖端速度达到最大值。此后，喷嘴的穿透力与文献中发现的先前建立的关联性很好。此外，观察到刚开始喷射后的喷嘴尖端速度不是恒定的，而是与2〜（1/2）成比例。当尖端速度曲线按峰值速度和相应的时间缩放时，会崩溃。给出了在各种喷射压力和腔室压力下喷射到恒定容积腔室中的非蒸发柴油喷雾剂的结果。

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  • 来源
    《Fuel》 |2009年第11期|2225-2237|共13页
  • 作者

    J. Kostas; D. Honnery; J. Soria;

  • 作者单位

    Laboratory for Turbulence Research in Aerospace and Combustion (LTRAC), Dept. Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia;

    Laboratory for Turbulence Research in Aerospace and Combustion (LTRAC), Dept. Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia;

    Laboratory for Turbulence Research in Aerospace and Combustion (LTRAC), Dept. Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    diesel; spray; penetration; imaging;

    机译：柴油机;喷雾;渗透;影像学;

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