复合射孔器爆燃气体压力计算模型

为获得适合工程应用的爆燃气体压力计算方法,并分析装药燃烧形式以及爆燃气体压力变化过程,对复合射孔器爆燃气体压力计算模型进行了研究.基于装药燃烧满足几何燃烧定律,燃气体特性参数均匀分布,注水区和岩石区在爆燃气体作用下分别发生弹性压缩和塑性压缩等假设,考虑装药燃烧、射孔扩展过程、注水区运动和压缩过程等因素对爆燃气体压力的影响,推导出了计算模型微分方程组.算例分析表明:该模型能正确反映爆燃气体压力的基本特性,并具有操作性强、能够反映压力变化过程等特点.

Calculation Model for Detonation Gas Pressure in Compound Perforation

In order to acquire detonation gas pressure calculation method for engineering application, analyze charging powder combustion mode and detonation air pressure changing process, research on compound perforation device detonation air pressure calculation model. Based on charging powder detonation satisfying the geometric combustion law, the air character parameters is equally distributed. Influenced by detonation gas, hypothesis such as flexibility compression and plasticity compression exist in water injection area and rock area by detonation gas. Considering influence of charging powder combustion, perforation expansion process, water injection area movement, and compression process on detonation air pressure, deduce calculation model differential equations. The example analysis shows that the model can correctly reflect basic characteristics of air pressure, and have features such as easy operation, and reflection of pressure variation process.