Influence of controllable speed casing on performance of subsonic compressor stage at design rotational speed
-
摘要:
采用数值模拟方法，研究了亚声速压气机级中不同转向与转速的可控转速机匣对压气机性能的影响。结果表明：当可转动环段转向与转子转向相同时，转速的增大将导致稳定工作裕度和峰值效率下降，可转动环段向叶顶泄漏流施加反向作用力，泄漏流速度降低，流道堵塞情况加剧。当可转动环段转向与转子转动方向相反时，转速的提高使得稳定工作裕度扩大，可转动环段向叶顶泄漏流施加同向作用力，泄漏流速度增加，近失速工况的流道流通能力提升。可转动环段在100%转子转速且其转动方向与转子转动方向反向时，压气机级的稳定工作裕度提高了16.34%，同时压气机级的压比提高了0.12%。
Abstract:This study employed numerical simulations to investigate the influence of controllable speed casing treatment with different rotational directions and rotational speeds on the performance of a subsonic compressor stage. The results indicated that when the rotational direction of the rotatable ring segment rotated in the same direction as the rotor, an increase in rotational speed led to a reduction in both the stable operating margin and peak efficiency. The rotatable ring segment exerted a reverse force to the tip leakage flow, thereby reducing the leakage flow velocity and exacerbating flow blockage of the flow channel. Conversely, when the rotational direction of the rotatable ring segment rotated opposite to the rotor, an increase in the rotational speed expanded the stable operating margin. The rotatable ring segment exerted a co-directional force to the tip leakage flow, thereby increasing the leakage flow velocity and improving the flow capacity of the flow channel under near stall conditions. When the rotatable ring segment rotated at 100% of the rotor speed in the opposite direction, the stable operating margin of the compressor stage improved by 16.34%, and its pressure ratio increased by 0.12%.
-
图 3 亚声速压气机级计算域及网格划分
Figure 3. Computational domain and mesh division of subsonic compressor stage
图 4 不同网格数的压气机级特性曲线
Figure 4. Compressor stage characteristic curves with different grid numbers
图 5 可转动环段转动方向与转子反向时压气机级特性曲线
Figure 5. Compressor stage characteristic curve when the direction of rotation of the rotatable ring segment is opposite to the rotor
图 6 可转动环段转动方向与转子同向时压气机级特性曲线
Figure 6. Compressor stage characteristic curve when the rotating direction of the rotatable ring segment is in the same direction with the rotor
图 7 可控转速机匣不同转向与转速下的SM和SMI
Figure 7. SM and SMI under different rotational directions and speeds of controllable speed casing
图 8 可转动环段转动方向与转子反向时近失速点99%叶高相对周向速度云图
Figure 8. Relative circumferential velocity contours at 99% span near stall point when the rotating direction of the rotatable ring segment is opposite to the rotor
图 9 可控转速机匣不同转速下转子叶顶泄漏流线
Figure 9. Rotor tip clearance leakage streamlines under different speeds of controllable speed casing
图 10 可转动环段转动方向与转子相反时叶顶泄漏流速度沿转子轴向弦长分布
Figure 10. Tip leakage velocity distribution along with axial chord of the tip clearance when the rotating direction of the rotatable ring segment is opposite to the rotor
图 11 可转动环段转动方向与转子反向时99%转子叶高静压系数随轴向弦长分布
Figure 11. Static pressure coefficient distribution at rotor blade 99% span along with axial chord when the rotating direction of the rotatable ring segment is opposite to the rotor
图 13 可转动环段转动方向与转子同向时近失速点99%叶高的相对周向速度云图
Figure 13. Relative circumferential velocity contours at 99% span near stall point when the rotating direction of the rotatable ring segment is in the same direction with the rotor
图 14 可转动环段转动方向与转子同向时近失速点50%轴向转子弦长的相对马赫数云图
Figure 14. Relative Mach number contours of 50% axial rotor chord length near stall point when the rotating direction of the rotatable ring segment is in the same direction with the rotor
图 15 可转动环段转动方向与转子同向时近失速点叶顶泄漏流线
Figure 15. Tip leakage streamlines near stall point when the rotating direction of the rotatable ring segment is in the same direction with the rotor
图 16 可转动环段转动方向与转子同向时99%转子叶高静压系数沿轴向弦长分布
Figure 16. Static pressure coefficient distribution at rotor blade 99% span along with axial chord when the rotating direction of the rotatable ring segment is in the same direction with the rotor
表 1 亚声速压气机级主要几何及结构参数
Table 1. Main geometric and design parameters of subsonic compressor stage
参数 数值 设计转速/（r/min） 6000 转子叶片数 18 转子轮毂比 0.648 静子叶片数 24 静子轮毂比 0.670 叶尖相对切线速度/（m/s） 169.65 叶顶间隙/mm 1 
下载: 导出CSV
表 2 各种可转动环段方案下亚声速压气机级的特性变化
Table 2. Characteristic changes of subsonic compressor stage under various rotatable ring segment schemes
% 方案 SM SMI Δπ Δη SC 29.77 RC−0.6 32.04 7.61 0.07 −0.66 RC−0.8 33.37 12.07 0.09 −1.18 RC−1.0 34.64 16.34 0.12 −1.89 RC+0.6 28.84 −3.13 −0.02 −0.38 RC+0.8 27.15 −8.80 −0.02 −0.81 RC+1.0 26.53 −10.89 −0.03 −1.43
下载: 导出CSV
-
[1] 吴亚东, 李涛. 压气机旋转不稳定性的研究进展[J]. 推进技术, 2021, 42(1): 68-81. Wu Yadong, Li Tao. Research progress on rotating instability of compressor[J]. Journal of Propulsion Technology, 2021, 42(1): 68-81. (in Chinese doi: 10.13675/j.cnki.tjjs.200328Wu Yadong, Li Tao. Research progress on rotating instability of compressor[J]. Journal of Propulsion Technology, 2021, 42(1): 68-81. (in Chinese) doi: 10.13675/j.cnki.tjjs.200328 [2] Lakshminarayana B, Zaccaria M, Marathe B. The structure of tip clearance flow in axial flow compressors[J]. Journal of Turbomachinery, 1995, 117(3): 336-347. doi: 10.1115/1.2835667 [3] Stauter R C. Measurement of the three-dimensional tip region flow field in an axial compressor[J]. Journal of Turbomachinery, 1993, 115(3): 468-476. doi: 10.1115/1.2929275 [4] Hoying D A, Tan C S, Vo H D, et al. Role of blade passage flow structurs in axial compressor rotating stall inception[J]. Journal of Turbomachinery, 1999, 121(4): 735-742. doi: 10.1115/1.2836727 [5] Emmons H W, Pearson C E, Grant H P. Compressor surge and stall propagation[J]. Journal of Fluids Engineering, 1955, 77(4): 455-467. [6] Taylor J V, Miller R J. Competing three-dimensional mechanisms in compressor flows[J]. Journal of Turbomachinery, 2017, 139(2): 021009. doi: 10.1115/1.4034685 [7] 张健, 杜娟, 陈泽, 等. 高负荷压气机叶栅流动分离的主动控制方法综述[J]. 工程热物理学报, 2022, 43(5): 1190-1202. Zhang Jian, Du Juan, Chen Ze, et al. Active flow control concepts of secondary flow on a highly loaded compressor cascade[J]. Journal of Engineering Thermophysics, 2022, 43(5): 1190-1202. (in ChineseZhang Jian, Du Juan, Chen Ze, et al. Active flow control concepts of secondary flow on a highly loaded compressor cascade[J]. Journal of Engineering Thermophysics, 2022, 43(5): 1190-1202. (in Chinese) [8] 白冰, 耿少娟, 李继超, 等. 间隙和转速对轴流压气机非定常叶顶泄漏流周向传播特性影响的实验研究[J]. 工程热物理学报, 2016, 37(7): 1404-1410. Bai Bing, Geng Shaojuan, Li Jichao, et al. Experimental study of effects of tip clearance and shaft speed on circumferential propagation characteristics of unsteady tip leakage flow[J]. Journal of Engineering Thermophysics, 2016, 37(7): 1404-1410. (in ChineseBai Bing, Geng Shaojuan, Li Jichao, et al. Experimental study of effects of tip clearance and shaft speed on circumferential propagation characteristics of unsteady tip leakage flow[J]. Journal of Engineering Thermophysics, 2016, 37(7): 1404-1410. (in Chinese) [9] 卢新根, 楚武利, 朱俊强, 等. 轴流压气机机匣处理研究进展及评述[J]. 力学进展, 2006, 36(2): 222-232. Lu Xingen, Chu Wuli, Zhu Junqiang, et al. A review of studies on casing treatment of axial-flow compressor[J]. Advances in Mechanics, 2006, 36(2): 222-232. (in Chinese doi: 10.3321/j.issn:1000-0992.2006.02.006Lu Xingen, Chu Wuli, Zhu Junqiang, et al. A review of studies on casing treatment of axial-flow compressor[J]. Advances in Mechanics, 2006, 36(2): 222-232. (in Chinese) doi: 10.3321/j.issn:1000-0992.2006.02.006 [10] 楚武利, 卢新根, 吴艳辉. 带周向槽机匣处理的压气机内部流动数值模拟与试验[J]. 航空动力学报, 2006, 21(1): 100-105. Chu Wuli, Lu Xingen, Wu Yanhui. Numerical and experimental investigations of the flow in a compressor with circumferential grooves[J]. Journal of Aerospace Power, 2006, 21(1): 100-105. (in Chinese doi: 10.3969/j.issn.1000-8055.2006.01.019Chu Wuli, Lu Xingen, Wu Yanhui. Numerical and experimental investigations of the flow in a compressor with circumferential grooves[J]. Journal of Aerospace Power, 2006, 21(1): 100-105. (in Chinese) doi: 10.3969/j.issn.1000-8055.2006.01.019 [11] Cao Zhiyuan, Yang Jing, Gao Xi, et al. Pitchwise casing treatment for effects of grooves on dynamics of vortices and loss of blade tip region of a compressor cascade[J]. Aerospace Science and Technology, 2022, 131: 107977. doi: 10.1016/j.ast.2022.107977 [12] 徐文峰, 孙鹏, 杨国刚. 机匣仿生顶室对压气机间隙流动影响研究[J]. 工程热物理学报, 2021, 42(9): 2275-2283. Xu Wenfeng, Sun Peng, Yang Guogang. Effect of casing with bionic tip chamber on compressor clearance flow[J]. Journal of Engineering Thermophysics, 2021, 42(9): 2275-2283. (in ChineseXu Wenfeng, Sun Peng, Yang Guogang. Effect of casing with bionic tip chamber on compressor clearance flow[J]. Journal of Engineering Thermophysics, 2021, 42(9): 2275-2283. (in Chinese) [13] Ba Dun, Zhang Qianfeng, Du Juan, et al. Design optimization of axial slot casing treatment in a highly-loaded mixed-flow compressor[J]. Aerospace Science and Technology, 2020, 107: 106262. doi: 10.1016/j.ast.2020.106262 [14] 王广, 楚武利, 陈向艺, 等. 轴向偏转型自循环机匣处理对高速压气机扩稳效果的影响机理[J]. 推进技术, 2020, 41(12): 2691-2699. Wang Guang, Chu Wuli, Chen Xiangyi, et al. Influence mechanism of axial deflection self-circulating casing treatment on stability enhancement of high-speed compressor[J]. Journal of Propulsion Technology, 2020, 41(12): 2691-2699. (in Chinese doi: 10.13675/j.cnki.tjjs.190697Wang Guang, Chu Wuli, Chen Xiangyi, et al. Influence mechanism of axial deflection self-circulating casing treatment on stability enhancement of high-speed compressor[J]. Journal of Propulsion Technology, 2020, 41(12): 2691-2699. (in Chinese) doi: 10.13675/j.cnki.tjjs.190697 [15] 钟兢军, 吴宛洋. 一种用于压气机转子的可转动内端壁机匣: CN201910069085.1[P]. 2019-05-07. [16] 赵佳诣. 跨声速轴流压气机转子中可控转速机匣的扩稳机制研究[D]. 上海: 上海海事大学, 2023. Zhao Jiayi. Research on stability expansion mechanism of the controllable speed casing in transonic axial flow compressor rotor[D]. Shanghai: Shanghai Maritime University, 2023. (in ChineseZhao Jiayi. Research on stability expansion mechanism of the controllable speed casing in transonic axial flow compressor rotor[D]. Shanghai: Shanghai Maritime University, 2023. (in Chinese) [17] Wu Wanyang, Zhao Jiayi, Zhong Jingjun. Influence of the rotating direction and speed of controllable speed casing on the flow stability of a transonic compressor rotor under design condition[J]. Aerospace Science and Technology, 2022, 126: 107630. doi: 10.1016/j.ast.2022.107630 [18] 钟兢军, 赵佳诣, 吴宛洋. 可控转速机匣转速对跨声速压气机转子流动稳定性的影响[J]. 推进技术, 2022, 43(9): 210218. Zhong Jingjun, Zhao Jiayi, Wu Wanyang. Effects of speed of controllable speed casing on flow stability for transonic compressor rotor[J]. Journal of Propulsion Technology, 2022, 43(9): 210218. (in ChineseZhong Jingjun, Zhao Jiayi, Wu Wanyang. Effects of speed of controllable speed casing on flow stability for transonic compressor rotor[J]. Journal of Propulsion Technology, 2022, 43(9): 210218. (in Chinese) [19] Zhao Jiayi, Wu Wanyang, Zhong Jingjun. Impact of the ending position of controllable speed casing on the flow stability in a transonic compressor rotor[J]. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 2023, 237(5): 845-856. doi: 10.1177/09576509231151484 [20] 赵佳诣, 吴宛洋, 钟兢军. 可控转速机匣起始位置对跨声速压气机转子流动稳定性的影响[J]. 工程热物理学报, 2024, 45(5): 1341-1349. Zhao Jiayi, Wu Wanyang, Zhong Jingjun. Effect of the starting position of the controllable speed casing on the flow stability for a transonic compressor rotor[J]. Journal of Engineering Thermophysics, 2024, 45(5): 1341-1349. (in ChineseZhao Jiayi, Wu Wanyang, Zhong Jingjun. Effect of the starting position of the controllable speed casing on the flow stability for a transonic compressor rotor[J]. Journal of Engineering Thermophysics, 2024, 45(5): 1341-1349. (in Chinese) [21] Zhao Jiayi, Wu Wanyang, Zhong Jingjun, et al. Flow mechanism study on the effect of controllable speed casing with different axial starting points on transonic compressor rotor stability[J]. Journal of Turbomachinery, 2025, 147: 011007. doi: 10.1115/1.4066146 [22] Hu Yi, Wu Wanyang, Zhao Ao, et al. Influence of the rotation characteristics of the controllable speed casing on the flow stability of a high-load compressor stage[J]. Aerospace Science and Technology, 2023, 141: 108575. doi: 10.1016/j.ast.2023.108575 [23] 钟兢军, 胡义, 赵傲, 等. 可控转速机匣转动方向对高负荷压气机级稳定性的影响[J]. 推进技术, 2023, 44(8): 2206042. Zhong Jingjun, Hu Yi, Zhao Ao, et al. Effects of controllable speed casing rotation direction on stability of high load compressor stage[J]. Journal of Propulsion Technology, 2023, 44(8): 2206042. (in Chinese doi: 10.13675/j.cnki.tjjs.2206042Zhong Jingjun, Hu Yi, Zhao Ao, et al. Effects of controllable speed casing rotation direction on stability of high load compressor stage[J]. Journal of Propulsion Technology, 2023, 44(8): 2206042. (in Chinese) doi: 10.13675/j.cnki.tjjs.2206042 [24] 胡义, 赵傲, 吴宛洋, 等. 可控转速机匣转动速度对设计工况下压气机级流动稳定性的影响[R]. 杭州: 2022年中国工程热物理学会热机气动热力学与流体机械学术会议, 2023. [25] Liu Shaoyan, Zhang Jiabo, Sun Zuoyu, et al. Effects of temperature and pressure fluctuations on exergy loss characteristics of hydrogen auto-ignition processes[J]. International Journal of Hydrogen Energy, 2023, 48(97): 38484-38495. doi: 10.1016/j.ijhydene.2023.06.084 -
点击查看大图
计量
- 文章访问数: 246
- HTML浏览量: 154
- PDF量: 30
- 被引次数: 0