摘要
为掌握二元收扩喷管气动特性和设计方法,通过数值模拟方法对采用超椭圆方程进行圆转方过渡的小宽高比二元收扩喷管进行研究。计算分析了喉道宽高比、圆转方段长度、收敛调节片长度及扩张调节片长度4个参数对二元收扩喷管气动性能的影响,通过对上述4个参数的优化得出了综合性能较优的二元收扩喷管气动方案。研究结果表明:经过适当优化,二元收扩喷管能够满足工程应用要求,同时,鉴于其在隐身和矢量推进等方面的优势,有必要对其开展更加深入地研究。
To master internal performance and design method of 2D-CD nozzle,the internal performance of 2D-CD nozzle was investigated by numerical simulation method.The effects of nozzle parameters such as throat aspect ratio,flaps length and the circular-torectangular transition duct length were calculated and analyzed.The internal performance project of 2D-CD nozzle of better comprehensive properties was obtained by optimization of four parameters.The resuls show that 2D-CD nozzle can meet engineering application through proper optimization,and the deep investigation is necessary for advantages in thrust vectoring and stealth.
出处
《航空发动机》
2014年第3期52-55,共4页
Aeroengine
基金
航空动力基础研究项目资助
关键词
二元收扩喷管
圆转方段长度
喉道宽高比
优化设计
航空发动机
2D-CD nozzle
circular-to-rectangular transition duct length
throat aspect ratio
optimization
aeroengine
