无后坐炮一维两相流内弹道参量分析
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摘要
建立了无后座炮内弹道的一维两相流模型,采用了两步分量型CTVD计算格式对其求解,得到了膛内不同时刻的压力,气相速度,固相速度以及空隙率等参数的分布规律。结果表明由于不均匀装药,膛内从定容阶段就存在较大的压力梯度,装药位置压力上升较快并向膛底传播。喷管打开后药床前段沿轴向向前运动并在弹底堆积,仿真结果显示由于压力降低,这部分火药直到弹丸运动出膛口都难以完全燃烧。药床后段受到喷口燃气涡流影响,一部分在喷管内随自由膨胀燃气一起运动穿过喷口,在到达喷口处近乎完全燃烧。
For the flow process of the internal ballistic bed in the recoilless gun,this paper established the model.We used the CTVD difference format to solve the model,and got the law of distribution of pressure,gas phase velocity,solid phase velocity and void ratio at different times.The results show that the pressure at the filling position rises faster and spreads to the bottom of the sputum.After the nozzle is opened,part of the gunpowder moves forward and the others move toward the nozzle.The gunpowder moving backwards burns out when it reaches the spout
For the flow process of the internal ballistic bed in the recoilless gun,this paper established the model.We used the CTVD difference format to solve the model,and got the law of distribution of pressure,gas phase velocity,solid phase velocity and void ratio at different times.The results show that the pressure at the filling position rises faster and spreads to the bottom of the sputum.After the nozzle is opened,part of the gunpowder moves forward and the others move toward the nozzle.The gunpowder moving backwards burns out when it reaches the spout
引文
[1]张春海.90年代常规兵器发展与弹道学研究[J].现代兵器,1991(3):2-6.
[2]雷红霞,王志军.火炮后坐对膛口流场的影响[J].中北大学学报(自然科学版),2017(1):36-41.
[3]金志明.无后座炮的Lagrange问题及其解[J].南京理工大学学报(自然科学版),1979(1):131-44.
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[5]王杨,姜孝海,郭则庆,等.某无后坐炮的流场数值模拟[J].南京理工大学学报(自然科学版),2011(1):47-51.
[6]张莺.无后座炮内弹道的气动力数学物理模型[J].南京理工大学学报(自然科学版),1984(2):88-97.
[7]RASHAD M,ZHANG X B,EL SADEK H,et al.Two-Phase Flow Interior Ballistics Model of Naval Large Caliber Guided Projectile Gun System[J].Applied Mechanics&Materials.2014,465-466:592-6.
[8]张小兵,金志明.枪炮内弹道学[M].北京:北京理工大学出版社,2014.
[9]翁春生,王浩.计算内弹道学[M]:北京:国防工业出版社,2006.
[10]金志明,翁春生.高等内弹道学[M]:北京:高等教育出版社,2003.
[11]蔡伟妹,易连军,徐万和.一种新的内弹道膛压计算方法[J].四川兵工学报,2012,33(2):16-17.
[12]曾宪刚,乔相信,李嘉,等.某型迫榴炮内弹道优化设计[J].兵器装备工程学报,2018,39(7):26-29.
[2]雷红霞,王志军.火炮后坐对膛口流场的影响[J].中北大学学报(自然科学版),2017(1):36-41.
[3]金志明.无后座炮的Lagrange问题及其解[J].南京理工大学学报(自然科学版),1979(1):131-44.
[4]鲍廷钰.应用内弹道势平衡理论的无后座炮内弹道解法[J].兵工学报,1986(1):8-16.
[5]王杨,姜孝海,郭则庆,等.某无后坐炮的流场数值模拟[J].南京理工大学学报(自然科学版),2011(1):47-51.
[6]张莺.无后座炮内弹道的气动力数学物理模型[J].南京理工大学学报(自然科学版),1984(2):88-97.
[7]RASHAD M,ZHANG X B,EL SADEK H,et al.Two-Phase Flow Interior Ballistics Model of Naval Large Caliber Guided Projectile Gun System[J].Applied Mechanics&Materials.2014,465-466:592-6.
[8]张小兵,金志明.枪炮内弹道学[M].北京:北京理工大学出版社,2014.
[9]翁春生,王浩.计算内弹道学[M]:北京:国防工业出版社,2006.
[10]金志明,翁春生.高等内弹道学[M]:北京:高等教育出版社,2003.
[11]蔡伟妹,易连军,徐万和.一种新的内弹道膛压计算方法[J].四川兵工学报,2012,33(2):16-17.
[12]曾宪刚,乔相信,李嘉,等.某型迫榴炮内弹道优化设计[J].兵器装备工程学报,2018,39(7):26-29.