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弹道学报  2013 

刚性伞稳定式子弹药的气动特性分析

Keywords: 刚性伞,柔性索,子弹药,多面体网格,数值仿真

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Abstract:

结合数值仿真和柔性材料气动力修正算法,分析了刚性伞稳定式子弹的气动力特性。基于多面体网格模型进行了仿真,并采用有限体积法和SST(Shear-StressTransport)湍流模型。飘带伞弹和丝绳伞弹的气动特性计算结果表明,由于飘带的摆振效应,亚音速时飘带伞弹的阻力系数大于丝绳伞弹,而超音速时由于飘带对弹底回流的阻滞,飘带伞弹的阻力系数小于丝绳伞弹。计算结果与试验数据的对比证明,本文所建立的分析方法是合理、可行的。

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