轴对称矢量喷管外流对内流干扰研究  

Effect of Outer Flow on Internal Performance of Axisymmetric Vectoring Nozzle

作　　者：张群锋[1] 吕志咏[1] 

机构地区：[1]北京航空航天大学飞行器设计与应用力学系,北京100083

出　　处：《航空动力学报》2003年第3期322-326,共5页Journal of Aerospace Power

摘　　要：应用有限体积法在同位网格中对控制方程进行离散化,对某一轴对称矢量喷管的内外流场进行了数值模拟,数值模拟和试验结果进行了比较,分析了该喷管在矢量偏角20°下,不同的落压比、不同的外流速度对轴对称矢量喷管内流的影响。研究结果表明,喷管内的分离激波是影响轴对称矢量喷管性能的重要因素。The numerical simulation to study the internal flow characteristic of an axisym-metric vectoring nozzle under outer flow has been conducted with collocated finite volume scheme. The results of simulation have been compared with that of experiment. The effect of different NPR and outer flow on internal performance of axisymmetric vectoring nozzle with deflective angle of 20?has been analyzed. The investigation shows that the separation shock wave gives an important effect on internal performance of axisymmetric vectoring nozzle.

关 键 词：轴对称矢量喷管 有限体积法 数值模拟 矢量推力 航空航天推进技术 流场干扰 

分 类 号：V211.4[航空宇航科学与技术—航空宇航推进理论与工程]