| 变循环压缩系统单外涵模式外涵节流特性分析 |
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| 引用本文： | 吴 森,于贤君,施恒涛,刘宝杰. 变循环压缩系统单外涵模式外涵节流特性分析[J]. 热能动力工程, 2021, 36(11): 34-40 |
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| 作者姓名： | 吴 森 于贤君 施恒涛 刘宝杰 |
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| 作者单位： | 海装沈阳局驻沈阳地区某军事代表室,辽宁沈阳110000;北京航空航天大学航空发动机研究院,北京100191 |
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| 基金项目： | 国家自然科学基金（51776010） |
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| 摘 要： | 为了解某双外涵变循环发动机压缩系统的风扇、核心机驱动风扇级(CDFS)和高压压气机三者之间的流动匹配机理，利用流体力学软件Numeca，在三个典型内涵道背压下，获得了单涵道模式下的外涵道节流特性。结果表明：对外涵道的节流可以实现涵道比的大幅度调节，可以通过影响风扇和CDFS的工作状态来实现外涵道增压比和内外涵道绝热效率的大幅度调节。
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| 关 键 词： | 变循环发动机 压缩系统 流动匹配 效率 总压比 |
Analysis of External Throttling Characteristics of Single Bypass Mode in Variable-cycle Compression System |
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| WU Sen,YU Xian-jun,SHI Heng-tao,LIU Bao-jie. Analysis of External Throttling Characteristics of Single Bypass Mode in Variable-cycle Compression System[J]. Journal of Engineering for Thermal Energy and Power, 2021, 36(11): 34-40 |
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| Authors: | WU Sen YU Xian-jun SHI Heng-tao LIU Bao-jie |
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| Affiliation: | Military Representative Office of Shenyang Bureau,Naval Equipment Department,Shenyang,China,Post Code:110000;Rearch Institude of Aero Engine,Beijing University of Aeronautics and Astronautics,Beijing,Post Code:100191 |
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| Abstract: | In order to clarify the matching flow mechanism among the fan,the core drive fan stage (CDFS) and the high pressure compressor in the compression system of a certain double bypass variable cycle engine,the fluid mechanics software Numeca was used to obtain the external throttling characteristics in the single bypass mode under three typical back pressure situations of internal bypass.The results show that the throttling of the external duct can achieve a substantial adjustment of the bypass ratio,and it can realize a substantial adjustment of the pressure ratio of the external duct and the adiabatic efficiency of double ducts by influencing the working status of the fan and CDFS. |
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| Keywords: | variable-cycle engine compression system flow matching efficiency pressure ratio |
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