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首页> 外文会议>International Symposium on Special Topics in Chemical Propulsion >Effect of Metal Concentration on Aluminum Reactivity in Combustion Products of Hydrocarbons(Abstract)
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Effect of Metal Concentration on Aluminum Reactivity in Combustion Products of Hydrocarbons(Abstract)

机译：金属浓度对碳氢化合物燃烧产物铝反应性的影响（摘要）

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摘要

Aluminum is the most common fuel in metalized rocket propellants and its combustion has been studied in numerous experiments. The majority of experimental studies, however, were performed using single and relatively large particles with sizes in the range of tens to hundreds of microns injected in hot oxidizing gas flows, or with model propellant compositions that had a very low metal content. At the same time, in realistic practical applications, aluminum particle sizes are often below 10 microns and their concentration in the post-gasification zone of the propellant hydrocarbon matrix is sufficiently high to modify the gas flow parameters (i.e., temperature, oxygen concentration, etc.). This collective particle-ensemble effect, that is inevitably present in dense particle clouds, is often neglected when results from single-particle ignition and combustion studies are extrapolated to practical propellant applications.
机译：铝是金属化火箭推进剂中最常见的燃料，并在许多实验中研究了其燃烧。然而，大多数实验研究是使用单一和相对大的颗粒进行的，其尺寸在数十至数百微米的范围内注射在热氧化气体流动中，或具有具有非常低金属含量的模型推进剂组合物。同时，在现实的实际应用中，铝颗粒尺寸通常低于10微米，并且它们在推进剂烃基的后气化区中的浓度足够高，以改变气体流量参数（即，温度，氧浓度，等。）。在单颗粒点火和燃烧研究的结果外推到实用的推进剂应用中，这种集体颗粒型效应通常忽略较致密的颗粒云。

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