| 复合推进剂中铝粉凝聚的链反应模型 |
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| 引用本文： | 夏幼南,李疏芬.复合推进剂中铝粉凝聚的链反应模型[J].航空动力学报,1988,3(3):247-251,284. |
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| 作者姓名： | 夏幼南 李疏芬 |
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| 作者单位： | 中国科学院研究生院
(夏幼南)，中国科技大学(李疏芬) |
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| 摘 要： | 本文提出了描述复合火箭推进剂(HTPB/Ap/AL)体系中铝粉凝聚的新模型——链反应模型。定义并推导出了铝粉的凝聚速率、平均凝聚程度及铝凝滴直径大小分布函数的具体表达式,从中可明显看到推进剂燃速、铝粉含量与铝粉粒度,Ap粒度及燃烧室压力等因素对铝粉凝聚程度的影响趋势,并且与现有的实验结果完全相符。
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| 收稿时间： | 1987/10/1 0:00:00 |
A CHAIN REACTION MODEL FOR ALUMINUM AGGLOMERATION |
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| Xia Younan and Li Shufen.A CHAIN REACTION MODEL FOR ALUMINUM AGGLOMERATION[J].Journal of Aerospace Power,1988,3(3):247-251,284. |
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| Authors: | Xia Younan and Li Shufen |
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| Institution: | Graduate School of Academia Sinica;China University of Science and Technology |
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| Abstract: | In order to describe the aluminum agglomeration process more clearly and quantitatively, a chain reaction model is proposed by analogy with the chain reaction in polymer chemistry. In this model, the agglomeration process can be divided into three steps: initiation step (breaking of oxide membrane on aluminum powder surface), propagation step (bollision of aluminum powders and agglomeration) and termination step (ignition). The formulae of aluminum agglomeration rate, mean degree of agglomeration and distribution of agglomerating powder diameters are provided. They can predict the effects of burning rate, combustion chamber pressure, AP particle size, aluminum powder size and percentage on the agglomeration degree. The trends of all predictions by the provided formulae are consistent with the experimental researches. |
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