变装药抽气装置喷口面积计算与研究

Caculation and Research on the Working Area forthe Nozzle of the ChargeVarying Flow Device

参考国外喷口面积的计算方法，对喷口射流的动态特性进行了分析和研究，对原公式进行了推导和修正；并用实验求出了修正系数的取值范围，验证了新计算公式的适用性和可靠性．

he dynamic characteristic of the outlet jet flow of the nozzle is dicussed and the originial formula is verified, referring on foreign calculations on nozzle area. The value extent of correctness facttor is obtained by experiment. The suitability and reliability of new caculation formula is verified.