| Citation: | Zhu Wenqing, Zhang Wei, Xu Ming. Effects of swirl on the performance of lobe exhaust system from helicopter engine[J]. Journal of Aerospace Power, 2026, 42（X）：20250279 doi: 10.13224/j.cnki.jasp.20250279
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The swirl effects on the performance of lobed exhaust system from a helicopter engine are studied based on computational fluid dynamics. Firstly, using the exhaust system of a civil helicopter engine as a verification example, the calculated pressure loss is in good agreement with the flight data, which proves the reliability of simulation method. Then, the aerodynamic characteristics of the exhaust system under non-swirl are analyzed. The ejection ratio of the lobed nozzle with a lobe height of 0.55R is 71% higher than the cylindrical nozzle, while the total pressure loss coefficient only increases by 17%. Finally, the effect of swirl on the performance of a lobed exhaust system is studied. The lobed nozzle has a counteract rotation effect, and the exhaust swirl enhances the ejection ratio and total pressure loss coefficient. When the swirl angle is less than 10°, the total pressure loss coefficient and ejection flow rate increase slowly. While when the swirl angle is larger than 15°, both the total pressure loss coefficient and ejection flow rate increase rapidly. Compared with non-swirl flow, the total pressure loss coefficient and ejection flow ratio of lobed exhaust system increase by 84% and 46%, respectively, at 25° swirl angle.
| [1] |
Casaday B, Tang J. CFD thermal analysis of an AH-64 engine bay[C]//Proceedings of the Vertical Flight Society 79th Annual Forum and Technology Display. The Vertical Flight Society, 2023: 1-10.
|
| [2] |
Powers R W, Stratton Z, Collins C, et al. Engine bay cooling and model based design on the CH-53K king stallion[R]. AIAA-2021-0032, 2021.
|
| [3] |
叶宇琛. 间隙均匀性对排气引射性能的影响[J]. 中国科技信息, 2020(5): 45-47. Ye Yuchen. Effect of gap uniformity on exhaust ejector performance[J]. China Science and Technology Information, 2020(5): 45-47. (in Chinese doi: 10.3969/j.issn.1001-8972.2020.05.012
Ye Yuchen. Effect of gap uniformity on exhaust ejector performance[J]. China Science and Technology Information, 2020(5): 45-47. (in Chinese) doi: 10.3969/j.issn.1001-8972.2020.05.012
|
| [4] |
李悦, 刘冲冲, 窦志伟. 直升机发动机舱通风冷却优化设计[J]. 直升机技术, 2023(4): 55-58, 63. Li Yue, Liu Chongchong, Dou Zhiwei. Optimal design on the ventilation and cooling capacity of the helicopter nacelle[J]. Helicopter Technique, 2023(4): 55-58, 63. (in Chinese doi: 10.3969/j.issn.1673-1220.2023.04.010
Li Yue, Liu Chongchong, Dou Zhiwei. Optimal design on the ventilation and cooling capacity of the helicopter nacelle[J]. Helicopter Technique, 2023(4): 55-58, 63. (in Chinese) doi: 10.3969/j.issn.1673-1220.2023.04.010
|
| [5] |
李凌慧. AC311型系列直升机排气温度对尾整流罩材质的影响分析[J]. 科技创新与应用, 2022, 12(20): 16-20. Li Linghui. Analysis of the influence of exhaust temperature on the material of tail beam fairing of AC311 series helicopter[J]. Technology Innovation and Application, 2022, 12(20): 16-20. (in Chinese doi: 10.19981/j.CN23-1581/G3.2022.20.003
Li Linghui. Analysis of the influence of exhaust temperature on the material of tail beam fairing of AC311 series helicopter[J]. Technology Innovation and Application, 2022, 12(20): 16-20. (in Chinese) doi: 10.19981/j.CN23-1581/G3.2022.20.003
|
| [6] |
Banthin C. Advancements in I. R. suppressors for helicopters[C]//Proceedings of the Vertical Flight Society Forum 31 . Washington DC: The Vertical Flight Society, 1975: 1-11.
|
| [7] |
Presz W M, Morin B K, Gousy R G, Forced mixer lobes in ejector designs[J]. Journal fo Propusion and Power, 1988, 4(4): 350-355.
|
| [8] |
Francois T. Internal aerodynamics of infrared suppressors for helicopter engines[J]. Journal of the American Helicopter Societ y, 1988, 33(4): 4-14.
|
| [9] |
杨宗耀. 直升机排气系统红外抑制器红外和声学特性研究[D]. 南京: 南京航空航天大学, 2021. Yang Zongyao. A research on infrared and acoustic characteristics of infrared suppressor in helicopter exhaust system[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2021. (in Chinese
Yang Zongyao. A research on infrared and acoustic characteristics of infrared suppressor in helicopter exhaust system[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2021. (in Chinese)
|
| [10] |
Hu Hui, Saga T, Kobayashi T, et al. Research on the vortical and turbulent structures in the lobed jet flow using laser induced fluorescence and particle image velocimetry techniques[J]. Measurement Science and Technology, 2000, 11(6): 698-711. doi: 10.1088/0957-0233/11/6/313
|
| [11] |
Hu Hui, Saga T, Kobayashi T, et al. A study on a lobed jet mixing flow by using stereoscopic particle image velocimetry technique[J]. Physics of Fluids, 2001, 13(11): 3425-3441. doi: 10.1063/1.1409537
|
| [12] |
张靖周, 李立国, 高潮. 弯曲混合管引射系统气动特性实验研究[J]. 航空动力学报, 1994, 9(1): 89-91. Zhang Jingzhou, Li Liguo, Gao Chao. Technical notes a preliminary experimental study on aerodynamic charateristics in ejector with curved mixing duct[J]. Journal of Aerospace Power, 1994, 9(1): 89-91. (in Chinese doi: 10.13224/j.cnki.jasp.1994.01.023
Zhang Jingzhou, Li Liguo, Gao Chao. Technical notes a preliminary experimental study on aerodynamic charateristics in ejector with curved mixing duct[J]. Journal of Aerospace Power, 1994, 9(1): 89-91. (in Chinese) doi: 10.13224/j.cnki.jasp.1994.01.023
|
| [13] |
张靖周, 李立国, 吴国钏. 波瓣混合结构三维流场数值计算[J]. 南京航空航天大学学报, 1996, 28(6): 745-749. Zhang Jingzhou, Li Liguo, Wu Guochuan. Numerical calculation of 3-D flow fields for lobed mixer[J]. Journal of Nanjing University of Aeronautics & Astronautics, 1996, 28(6): 745-749. (in Chinese
Zhang Jingzhou, Li Liguo, Wu Guochuan. Numerical calculation of 3-D flow fields for lobed mixer[J]. Journal of Nanjing University of Aeronautics & Astronautics, 1996, 28(6): 745-749. (in Chinese)
|
| [14] |
李腾, 刘友宏, 谢翌, 等. 波瓣高宽比对波瓣强迫混合排气系统性能影响[J]. 航空动力学报, 2013, 28(8): 1736-1743. Li Teng, Liu Youhong, Xie Yi, et al. Effect of ratio of height to width of lobe on performance of forced mixing exhaust system[J]. Journal of Aerospace Power, 2013, 28(8): 1736-1743. (in Chinese doi: 10.13224/j.cnki.jasp.2013.08.012
Li Teng, Liu Youhong, Xie Yi, et al. Effect of ratio of height to width of lobe on performance of forced mixing exhaust system[J]. Journal of Aerospace Power, 2013, 28(8): 1736-1743. (in Chinese) doi: 10.13224/j.cnki.jasp.2013.08.012
|
| [15] |
谢翌, 刘友宏. 瓣高宽比对波瓣强迫混合排气系统性能影响[J]. 航空动力学报, 2010, 25(12): 2787-2794. Xie Yi, Liu Youhong. Effect of ratio of height to width of lobe on the performance of a lobed mixer in a forced mixing exhaust system[J]. Journal of Aerospace Power, 2010, 25(12): 2787-2794. (in Chinese doi: 10.13224/j.cnki.jasp.2013.08.012
Xie Yi, Liu Youhong. Effect of ratio of height to width of lobe on the performance of a lobed mixer in a forced mixing exhaust system[J]. Journal of Aerospace Power, 2010, 25(12): 2787-2794. (in Chinese) doi: 10.13224/j.cnki.jasp.2013.08.012
|
| [16] |
刘友宏, 樊超, 谢翌, 等. 波瓣数对波瓣强迫混合排气系统性能影响[J]. 航空动力学报, 2010, 25(8): 1683-1689. Liu Youhong, Fan Chao, Xie Yi, et al. Effect of lobe numbers on the performance of a lobed mixer in the forced mixing exhaust system[J]. Journal of Aerospace Power, 2010, 25(8): 1683-1689. (in Chinese doi: 10.13224/j.cnki.jasp.2013.08.012
Liu Youhong, Fan Chao, Xie Yi, et al. Effect of lobe numbers on the performance of a lobed mixer in the forced mixing exhaust system[J]. Journal of Aerospace Power, 2010, 25(8): 1683-1689. (in Chinese) doi: 10.13224/j.cnki.jasp.2013.08.012
|
| [17] |
叶宇琛, 黄勇, 刘磊, 等. 接触面积和流向涡对波瓣混合器引射比的影响[J]. 航空动力学报, 2015, 30(8): 2011-2017. Ye Yuchen, Huang Yong, Liu Lei, et al. Effects of interfacial contact area and streamwise vortices on pumping ratio of lobed mixer[J]. Journal of Aerospace Power, 2015, 30(8): 2011-2017. (in Chinese doi: 10.13224/j.cnki.jasp.2015.08.027
Ye Yuchen, Huang Yong, Liu Lei, et al. Effects of interfacial contact area and streamwise vortices on pumping ratio of lobed mixer[J]. Journal of Aerospace Power, 2015, 30(8): 2011-2017. (in Chinese) doi: 10.13224/j.cnki.jasp.2015.08.027
|
| [18] |
单勇, 张靖周. 波瓣喷管引射-混合器涡结构的数值研究[J]. 空气动力学学报, 2005, 23(3): 355-359. Shan Yong, Zhang Jingzhou. Numerical investigation of vortical structures in the lobed mixer-ejector[J]. Acta Aerodynamica Sinica, 2005, 23(3): 355-359. (in Chinese doi: 10.3969/j.issn.0258-1825.2005.03.017
Shan Yong, Zhang Jingzhou. Numerical investigation of vortical structures in the lobed mixer-ejector[J]. Acta Aerodynamica Sinica, 2005, 23(3): 355-359. (in Chinese) doi: 10.3969/j.issn.0258-1825.2005.03.017
|
| [19] |
单勇, 张靖周. 弯曲混合管引射系统引射-混合特性数值研究[J]. 南京航空航天大学学报(自然科学版), 2008, 40(2): 137-141. Shan Yong, Zhang Jingzhou. Numerical computation for pumping and mixing performance on mixer-ejector with curved mixing duct[J]. Journal of Nanjing University of Aeronautics & Astronautics (Natural Science Edition), 2008, 40(2): 137-141. (in Chinese
Shan Yong, Zhang Jingzhou. Numerical computation for pumping and mixing performance on mixer-ejector with curved mixing duct[J]. Journal of Nanjing University of Aeronautics & Astronautics (Natural Science Edition), 2008, 40(2): 137-141. (in Chinese)
|
| [20] |
叶宇琛, 黄勇, 刘磊, 等. 带拐弯混合管对波瓣混合器性能的影响[J]. 航空动力学报, 2015, 30(5): 1113-1118. Ye Yuchen, Huang Yong, Liu Lei, et al. Effects of turning mixing duct on lobed mixer performance[J]. Journal of Aerospace Power, 2015, 30(5): 1113-1118. (in Chinese doi: 10.13224/j.cnki.jasp.2015.05.012
Ye Yuchen, Huang Yong, Liu Lei, et al. Effects of turning mixing duct on lobed mixer performance[J]. Journal of Aerospace Power, 2015, 30(5): 1113-1118. (in Chinese) doi: 10.13224/j.cnki.jasp.2015.05.012
|
| [21] |
宋宇宽. 波瓣混合排气系统多目标优化设计方法研究[D]. 北京: 中国科学院大学, 2020. Song Yukuan. Research on multi-objective optimization and design of the lobed mixer exhaust system[D]. Beijing: University of Chinese Academy of Sciences, 2020. (in Chinese
Song Yukuan. Research on multi-objective optimization and design of the lobed mixer exhaust system[D]. Beijing: University of Chinese Academy of Sciences, 2020. (in Chinese)
|
| [22] |
吴楠. 直升机红外抑制器引射喷管构型和壁面冷却研究[D]. 南京: 南京航空航天大学, 2018. Wu Nan. Research on ejector nozzle and wall cooling of helicopter infrared suppressor[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2018. (in Chinese
Wu Nan. Research on ejector nozzle and wall cooling of helicopter infrared suppressor[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2018. (in Chinese)
|
| [23] |
雷志军. 进口预旋条件下涡扇发动机波瓣射流掺混机理的实验研究[D]. 北京: 中国科学院研究生院, 2011. Lei Zhijun. Experimental study on the mixing mechanism of lobed mixer with inlet swirl in model turbofan engines [D]. Beijing: Chinese Academy of Sciences, 2011. (in Chinese
Lei Zhijun. Experimental study on the mixing mechanism of lobed mixer with inlet swirl in model turbofan engines [D]. Beijing: Chinese Academy of Sciences, 2011. (in Chinese)
|
| [24] |
宋宇宽, 雷志军, 张燕峰, 等. 速度比与进口预旋耦合作用下波瓣混合器射流掺混机理分析[J]. 航空发动机, 2022, 48(3): 25-33. Song Yukuan, Lei Zhijun, Zhang Yanfeng, et al. Analysis of jet mixing mechanism of lobed mixer under the coupling of velocity ratio and inlet swirl[J]. Aeroengine, 2022, 48(3): 25-33. (in Chinese doi: 10.13477/j.cnki.aeroengine.2022.03.005
Song Yukuan, Lei Zhijun, Zhang Yanfeng, et al. Analysis of jet mixing mechanism of lobed mixer under the coupling of velocity ratio and inlet swirl[J]. Aeroengine, 2022, 48(3): 25-33. (in Chinese) doi: 10.13477/j.cnki.aeroengine.2022.03.005
|
| [25] |
朱文庆, 仲唯贵, 张威. 倾转旋翼机小速度前飞时的尾迹涡衍化及其对平尾的影响[J]. 南京航空航天大学学报, 2022, 54(2): 203-210. Zhu Wenqing, Zhong Weigui, Zhang Wei. The wakes of a tilt-rotor aircraft in small forward velocity flight and effects on a horizontal tail[J]. Journal of Nanjing University of Aeronautics & Astronautics, 2022, 54(2): 203-210. (in Chinese
Zhu Wenqing, Zhong Weigui, Zhang Wei. The wakes of a tilt-rotor aircraft in small forward velocity flight and effects on a horizontal tail[J]. Journal of Nanjing University of Aeronautics & Astronautics, 2022, 54(2): 203-210. (in Chinese)
|
| [26] |
郑禛. 直升机红外抑制器混合管构型研究[D]. 南京: 南京航空航天大学, 2020. Zheng Zhen. Research on structure of mixing duct in helicopter infrared suppressor[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2020. (in Chinese
Zheng Zhen. Research on structure of mixing duct in helicopter infrared suppressor[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2020. (in Chinese)
|
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