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黏性对高压空气弹射装置内弹道性能的影响

邵亚军 张炜 高钦和 杨正伟 管文良

邵亚军, 张炜, 高钦和, 杨正伟, 管文良. 黏性对高压空气弹射装置内弹道性能的影响[J]. 航空动力学报, 2017, 32(8): 1933-1942. doi: 10.13224/j.cnki.jasp.2017.08.017
引用本文: 邵亚军, 张炜, 高钦和, 杨正伟, 管文良. 黏性对高压空气弹射装置内弹道性能的影响[J]. 航空动力学报, 2017, 32(8): 1933-1942. doi: 10.13224/j.cnki.jasp.2017.08.017
Influence of viscosity on interior ballistics of high-pressure air ejection device[J]. Journal of Aerospace Power, 2017, 32(8): 1933-1942. doi: 10.13224/j.cnki.jasp.2017.08.017
Citation: Influence of viscosity on interior ballistics of high-pressure air ejection device[J]. Journal of Aerospace Power, 2017, 32(8): 1933-1942. doi: 10.13224/j.cnki.jasp.2017.08.017

黏性对高压空气弹射装置内弹道性能的影响

doi: 10.13224/j.cnki.jasp.2017.08.017
基金项目: 国家自然科学基金(51475462, 51575516, 51305447)

Influence of viscosity on interior ballistics of high-pressure air ejection device

  • 摘要: 针对高压空气弹射装置中,气体黏性流动造成的内耗散和沿程损失对内弹道性能的影响,结合高压下空气黏度公式,重点考虑低压室内的黏性流动,得到了未充分发展黏性流体在非定常状态下的能量损失计算方法。基于高压空气真实气体效应分析,建立了考虑气体摩擦的高压空气弹射内弹道数学模型,进行了数值求解。对比结果表明:气体摩擦效应对快速、瞬时过程造成的干扰量较小,对象宏观特性变化不大,低精度系统中可忽略不计。通过对结果的规律性进行探究,发现摩擦效应降低了有用功的转化率,减缓了气体膨胀速率,造成低压室压力的非均匀分布、高压室到低压室的质量流量波动和弹体初始时刻的碰撞。

     

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出版历程
  • 收稿日期:  2016-03-21
  • 刊出日期:  2017-08-28

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