[1]刘宁,张相炎.再生式液体发射药火炮燃烧室内两相流模型[J].南京理工大学学报(自然科学版),2010,(03):347-351.
 LIU Ning,ZHANG Xiang-yan.Two-phase Flow Model in Combustion Chamber of Regenerative Liquid Propellant Gun[J].Journal of Nanjing University of Science and Technology,2010,(03):347-351.
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再生式液体发射药火炮燃烧室内两相流模型
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2010年03期
页码:
347-351
栏目:
出版日期:
2010-06-30

文章信息/Info

Title:
Two-phase Flow Model in Combustion Chamber of Regenerative Liquid Propellant Gun
作者:
刘宁 张相炎
南京理工大学机械工程学院, 江苏南京210094
Author(s):
LIU NingZHANG Xiang-yan
School of Mechanical Engineering,NUST,Nanjing 210094,China
关键词:
再生式液体发射药火炮 燃烧室 两相流 喷雾燃烧 压力振荡
Keywords:
regenerative liquid propellant guns combustion chamber two-phase flow spray combustion pressure oscillation
分类号:
TJ302
摘要:
为研究再生式液体发射药火炮(RLPG)内弹道过程,建立了RLPG燃烧室内的一维两相流数学模型,气相控制方程为非稳态欧拉方程组,液相控制方程用拉格朗日方程描述,方程组的源项反映了气液两相之间的耦合。分别采用二阶精度的MacCormack预估校正二步差分格式计算气相控制方程,求解析解的方法计算液相控制方程,PSI-Cell方法处理气液之间的耦合过程。通过数值仿真模拟了RLPG喷雾燃烧过程和压力振荡现象,建立了纵向二阶压力振荡振型,得到了主要物理参量的时空分布情况并讨论了主要结构参数对膛内过程的影响。仿真结果显示:由于身管入口的节流作用,使得燃烧室内的燃气压力和速度波动幅度都比身管内的要大;增大活塞差动面积比和喷孔面积都会引起膛压升高,压力振荡幅值增大。
Abstract:
To study the interior ballistic process of a regenerative liquid propellant gun(RLPG),a one-dimensional two-phase flow mathematical model in the combustion chamber of a RLPG is established.The gas phase control equation is unsteady Euler equations while the liquid phase control equation is described by Lagrangian equation.The coupling of the two phases is implicated in the source terms of equations.The gas phase control equations are calculated by MacCormack’s two-step predictor-corrector difference scheme of second order accuracy and the analytic method is used for calculation of the liquid phase control equation.A PSI-Cell method is used for the coupling of gas and liquid phases.The process of spray combustion of a RLPG and pressure oscillations is simulated,the second order longitudinal mode of the pressure oscillation is set up by numerically simulation.The time-space distributions of main physical parameters are obtained and the effects of structure parameters on the process in the chamber are discussed.The simulation results show the gas pressure and the velocity fluctuation range in the chamber are larger than those in the tube due to the throttling action of tube entrance.The chamber pressure and its oscillation amplitude increase with the enlargement of the differential area ratio and the nozzle area of a piston. c

参考文献/References:

[1] K le in N, Co ffee T P, Lev eritt C S. Pressure osc illations in a liqu id prope llan t gun-possible dependence o f prope llan t burn ing rate[ R]. AD-A252758, 1992.
[2] Zhu Guangsheng, Zhang Yue lin, Lin Juny.i Mu lt-i phase m ultidim ensiona l m ode ling o f inter io r ballistics o f regenerative liquid prope llant gun[ J] . Journa l o f Ballistics, 1994, 19( 1) : 20- 27. [ 3 ] 王亮宽, 张相炎, 刘宁. 再生式液体发射药火炮燃 烧室压力高频振荡研究[ J]. 南京理工大学学报 ( 自然科学版), 2006, 30( 4): 491- 494.
[4] Coffee T P. Prog ress in m ode ling pressu re o sc illations in regenera tive liquid propellant guns[ J]. Journal o f Propu lsion and Pow er, 2000, 16( 2) : 302- 308.
[5] 金志明, 翁春生. 高等内弹道学[M ]. 北京: 高等教 育出版社, 2003: 312- 359.
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备注/Memo

备注/Memo:
作者简介: 刘宁( 1980 - ), 男, 博士, 主要研究方向: 火炮武器系统现代设计理论与方法; E-mail: LN101@ 163. com。
更新日期/Last Update: 2010-06-30