RLPG振荡燃烧简化模型及数值模拟

Simplified Model and Numerical Simulation of Oscillation Combustion of Regenerative Liquid Propellant Gun

以再生式液体发射药火炮(RLPG)为工程背景,建立了RLPG振荡燃烧简化模型.假设液体发射药喷入燃烧室后形成一定比例的球形液滴和块状液面,且块状液面的燃烧具有一定的随机性.液滴与液面均按指数燃速规律释放能量.数值求解RLPG内弹道方程组,得到的p t曲线较好地模拟出23 mm RLPG燃烧室和贮液室的压力振荡现象.

In the engineering background of regenerative liquid propellant gun （RLPG）, simplified model of oscillation combustion of RLPG was studied. It was supposed that the liquid propellant formed the spherical liquid drops and the massive liquid surfaces in a certain proportion after being ejected into combustion chamber and that the massive liquid surfaces combust randomly, and recognized that the energy of the droplets and massive liquid surfaces is released according to exponential combustion law. Based on interior ballistic equation group of RLPG, the pressure-time curves from the numerical computing achieve a good simulation of the pressure oscillation of 23 mm RLPG combustion chamber and reservoir.