| 大涵道比涡扇发动机射流控制反推模型数值模拟 |
| |
| 引用本文： | 刘春阳,王占学,付鹏哲.大涵道比涡扇发动机射流控制反推模型数值模拟[J].航空动力学报,2010,25(8):1811-1817. |
| |
| 作者姓名： | 刘春阳 王占学 付鹏哲 |
| |
| 作者单位： | 1. 西北工业大学,动力与能源学院,西安,710072
2. 中国航空工业集团公司,沈阳发动机设计研究所,沈阳,110015 |
| |
| 基金项目： | 西北工业大学基础研究基金，航空科学基金 |
| |
| 摘 要： | 基于CFD(计算流体动力学)数值模拟技术,分别对两个不同涵道比涡扇发动机叶栅式射流控制反推模型进行计算,分析了反推力的产生及控制机理,并详细分析了二次流喷射压比、喷射位置、喷射角度及主流压比对流场结构和反推性能的影响.采用与反推力成正比的参数反推质量流量比来衡量反推性能的优劣,计算结果表明:二次流喷射压力、喷射位置和喷射角度是影响反推性能的重要参数,并且在一定的风扇涵道流前提下,存在最佳的二次流喷射位置、喷射角度和喷射压力;由于二次流引气量的限定,限制了二次流射入深度,因此射流控制反推技术不能用于超大涵道比发动机.
|
| 关 键 词： | 叶栅式反推 涡扇发动机 数值模拟 二次流 射流控制 |
| 收稿时间： | 2010/1/27 0:00:00 |
| 修稿时间： | 2010/5/10 0:00:00 |
Numerical simulation on thrust reverser based on secondary flow for high-bypass-ratio turbofan engine |
| |
| LIU Chun-yang,WANG Zhan-xue and FU Peng-zhe.Numerical simulation on thrust reverser based on secondary flow for high-bypass-ratio turbofan engine[J].Journal of Aerospace Power,2010,25(8):1811-1817. |
| |
| Authors: | LIU Chun-yang WANG Zhan-xue and FU Peng-zhe |
| |
| Affiliation: | School of power and energy,Northwestern Polytechnical University |
| |
| Abstract: | The study for thrust reverser based on secondary flow injection is carried out with the method of CFD. The 2D flow field of thrust reversers with secondary flow injection was numerically simulated to study the effect of location of secondary injection, angle of secondary injection, total pressure ratio of secondary injection, and total fan nozzle pressure ratio on performance of the thrust reverser. The important parameter is cascade flow ratio which is in direct proportion to reverse thrust. The results show that the configuration of flow field presented in this thesis is similar to the referenced flow field. Location and angle of injection which have optimum values are important factors while total pressure ratio of injection has a fitting value. Due to the limit of secondary mass flow, the injection depth is finite, so the new reverse thrust concept can not be adopted by super high-bypass-ratio turbofan engines. |
| |
| Keywords: | cascade thrust reverser turbofan engine numerical simulation secondary flow injection control |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《航空动力学报》浏览原始摘要信息 |
|
点击此处可从《航空动力学报》下载全文 |
|
