超燃燃烧室小肋片/气动斜坡结构组合研究  

Numerical study on supersonic combustor using ethylene with pylon and aero-ramp combustion

作　　者：杨宇 吴达[1] 王应洋 李旭昌[1] 张保山 YANG Yu;WU Da;WANG Yingyang;LI Xuchang;ZHANG Baoshan(Air and Missile Defense College,Air Force Engineering University,Xi’an 710051,China;School of Equipment Management and UAV Engineering,Air Force Engineering University,Xi’an 710051,China;Unit 92095 of the PLA,Taizhou 318050,China)

机构地区：[1]空军工程大学防空反导学院,西安710051 [2]空军工程大学装备管理与无人机工程学院,西安710051 [3]92095部队,台州318050

出　　处：《空气动力学学报》2020年第5期938-947,I0003,共11页Acta Aerodynamica Sinica

摘　　要：为设计出一种能有效增强掺混、提高燃烧效率的燃料喷注方案,首次将锥形肋片与气动斜坡进行结构组合研究,并对小肋片/气动斜坡不同组合方式冷、热流场进行数值模拟,分析结果发现:与传统的气动斜坡喷射相比,多肋片展向组合后方喷射能取得较为理想的掺混效果,并且不会带来较大总压损失;引入燃气发生器后,肋片的掺混增强效果得到明显提升。改善后的喷射方案能提高约9%的燃烧效率。In order to design a fuel-injection scheme that could effectively enhance mixing and improve combustion efficiency,in this paper,the structural combination of conical pylon and aero-ramp was studies for the first time,and numerical simulation was carried out upon the cold and hot flow fields of the small pylon/aero-ramp.The experimental results show that:compared with the injection of traditional aero-ramp,the rear injection of multiple pylons in the extended composites can achieve a better mixing effect without causing a large total pressure loss.With the gas generator introduced,the mixing enhancement effect of the pylons is improved significantly.The improved injection scheme can increase the combustion efficiency by approximately 9%.The numerical results can provide certain reference for engineering practice.

关 键 词：超燃燃烧室 小肋片 气动斜坡 掺混增强 数值模拟 燃料喷注 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]