无壳弹内弹道分段式两相流模型的数值模拟

NUMERICAL SIMULATION OF STAGED TWO PHASE FLOW MODELING IN INTERIOR BALLISTIC OF NON CASED AMMUNITION

建立了无壳弹内弹道不同燃烧阶段的一维两相流力学模型．针对无壳弹射击过程中的燃烧特点，采用分段式建模的方法，探讨了无壳弹膛内内弹道的变化规律，并进行了数值求解，数值结果和实测曲线具有较好的一致性．揭示了无壳弹内弹道循环的机理．

This paper builds one dimensional two phase flow mechanics models of the different stages in the interior ballistic of the non cased ammunition. According to the characteristics of combustion in the shooting process of the non cased ammunition and with the method of staged modeling employed, it investigates the rules of changes in the chamber and solves the equation numerically. And the principles of the circulation in the interior ballistics of the non cased ammunition are revealed. Finally the numerical results agree with the experimental curves quite well.