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Combustion of interacting droplet arrays in a microgravity environment

机译:微重力环境下相互作用液滴阵列的燃烧

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The combustion of interaction fuel droplet arrays under microgravity has been studied using 10 and 2.2 s drop towers. The effect of separation distance L among three drop- lets on the burning rate was investigated using n-heptane, methanol and decane, while the effect of the ignition energy was investigated on n-heptane. The combustion followed the "d~2-law" and the combustion rate constants K_c of the respective droplets were lower than that of a single droplet. Methanol(k_c = 0.0081×L+0.41(mm~2/s)and decane (k_c=0.0075×L + 0.41(mm~2/s)showed a lower combustion rate compared to heptane (k_c = 0.0068×L + 0.48(mm~2/s), whereas methanol had a smaller flame size and less tendency to flame merging, compared to heptane and decane.
机译:相互作用的燃料液滴阵列在微重力下的燃烧已经使用10和2.2 s的下降塔进行了研究。使用正庚烷,甲醇和癸烷研究了三个液滴之间的分离距离L对燃烧速率的影响,同时研究了点火能量对正庚烷的影响。燃烧遵循“ d-2定律”,并且各个液滴的燃烧速率常数K_c低于单个液滴的燃烧速率常数。甲醇(k_c = 0.0081×L + 0.41(mm〜2 / s)和癸烷(k_c = 0.0075×L + 0.41(mm〜2 / s))与庚烷(k_c = 0.0068×L + 0.48( (mm 2 / s),而与庚烷和癸烷相比,甲醇具有更小的火焰尺寸和更小的火焰融合趋势。

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