基于内弹道过程的膛内燃烧产物的计算

为提供弹丸出膛口后流场计算的初始数据,在内弹道计算的基础上引入了发射药燃烧产物组分的计算。内弹道计算采用经典内弹道计算模型,发射药燃烧产物组分的计算采用最小自由能法。在最小自由能法中,使用实际气体的范德瓦尔斯状态方程,采用剩余性质法计算实际气体的Gibbs自由能。通过计算,得到了膛内火药燃烧产物组分的变化情况。分析表明,该文的计算结果可以作为弹丸出膛口后流场计算的初始数据。

Calculation of Combustion Product in Bore Based on Interior Ballistic Model

To calculate the muzzle blast flow,the combustion product was calculated based on interior ballistic model.The classical model of interior ballistics was established to simulate the gas in bore,and the minimum free-energy method was used to calculate the combustion products.These programs employ the residual property formulation to solve the Gibbs free energy on the basis of Van der Waals equation of state.By calculation,the number of moles of gun powder combustion product component was obtained in bore.The analysis result shows that the numerical result is sufficient to be the initial data for calculating muzzle blast flow.