两相流环缝塞式喷管设计方法

 在常滞后两相流假设下,提出改进的Angelino理想型面法和改进的“二次曲线+三次曲线”造型法设计两相流环缝塞式喷管;计算了这两种改进方法设计的塞式喷管性能。算例表明:在两相流条件下与未考虑两相流效应的气相理想方法设计的型面相比，改进的Angelino法设计的型面长度缩短近33%，推力增大约1%；改进的“二次曲线+三次曲线”造型法设计的型面长度减小近6%，性能提高约4%。

Design Methods of Two-phase Axial Plug Nozzle

This paper proposes an improved Angelino method and an improved "Parabola plus Cubic" curve method to design the solid-propellant axial plug nozzle on the assumption of constant velocity drag coefficient for two-phase flow. The performances of the two-phase plug nozzles designed by the improved methods are computed. The examples in the paper indicate that the length of the plug contour designed by the improved Angelino method is cut down by about 33%, and the thrust is increased by about 1%, comparing to the plug contour without considering the two-phase factors. The length of the one designed by the improved "Parabola plus Cubic" curve method is cut down by about 6%, and the thrust is increased by about 4%.