典型文献
Numerical investigation of a muzzle multiphase flow field using two underwater launch methods
文献摘要：
A two-dimensional axisymmetric model,employing a dynamic mesh and user-defined functions,is used to numerically simulate the transient multiphase flow field produced by an underwater gun.Further-more,a visualized shooting experiment platform with a high-speed camera is built to observe the evolution process of such a multiphase flow field.The simulated phase distribution diagram is agreed well with the shadow photo of the experiment,indicating that the numerical model is reasonable.Further examinations of the multiphase flow fields by using the submerged and sealed launch methods show that use of the sealed launch can significantly improve the interior ballistic performance of an underwater gun.In the cases by using these two types of underwater launch methods,the displacement of the projectile within the range of the muzzle flow field meets the exponential law over time.More-over,a not fully developed bottle-shaped shock wave is formed when t=0.4 ms,but this bottle-shaped shock wave expands more rapidly for the sealed launch.In addition,the amplitude of pressure oscillation for the sealed launch is larger than that of the submerged launch,but the pressure oscillation of the sealed launch lasts shorter.
文献关键词：
中图分类号：
作者姓名：
Jing-hui Zhang;Yong-gang Yu;Xin-wei Zhang
作者机构：
School of Energy and Power Engineering,Nanjing University of Science&Technology,Nanjing,210094,China
文献出处：
引用格式：
[1]Jing-hui Zhang;Yong-gang Yu;Xin-wei Zhang-.Numerical investigation of a muzzle multiphase flow field using two underwater launch methods)[J].防务技术,2022(08):1454-1469
A类：
muzzle
B类：
Numerical,investigation,multiphase,flow,using,two,underwater,launch,methods,dimensional,axisymmetric,model,employing,dynamic,mesh,user,defined,functions,used,numerically,transient,produced,by,gun,Further,more,visualized,shooting,experiment,platform,high,speed,camera,built,observe,evolution,process,such,simulated,distribution,diagram,agreed,well,shadow,photo,indicating,that,reasonable,examinations,fields,submerged,sealed,show,significantly,improve,interior,ballistic,performance,In,cases,these,types,displacement,projectile,within,range,meets,exponential,law,over,More,not,fully,developed,bottle,shaped,shock,wave,formed,when,ms,this,expands,rapidly,addition,amplitude,pressure,oscillation,larger,than,lasts,shorter
AB值：
0.521542
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
