| Citation: | SONG Zhiyong, WANG Xuhuai, LIU Yong, et al. Experiment on instable characteristics of liquid sheet in swirl atomizer[J]. Journal of Aerospace Power, 2025, 40（6）：20230689 doi: 10.13224/j.cnki.jasp.20230689
|
In order to obtain the unstable growth characteristics and influence laws of surface waves during the process of swirling liquid sheet fragmentation, experimental studies on different geometric structures of closed swirl atomizers were conducted. Based on high-speed images, the growth rate of surface wave amplitude during the development of liquid sheet was extracted, and the influence of pressure drop was summarized. The research results indicated that the amplitude of the dominant liquid sheet surface wave increased exponentially along the flow direction of the liquid sheet surface, and the growth rate of the surface wave amplitude value exhibited nonlinear characteristics; the development of liquid sheet was divided into fast growth zone, slow growth zone, and fragmentation zone. A function was established for the variation of fluctuation amplitude with travel distance in different regions, and the dominant fluctuation growth rate corresponding to different development regions was extracted, reflecting the nonlinear and unstable growth laws of the liquid sheet. At the same time, the position of the turning point of the function was analyzed, and a functional relationship between the breakup length and pressure drop was established. It was found that the breakup length showed an exponential decline trend with the increase of pressure drop, and the ultimate breakup length of the atomizer liquid sheet can be predicted through the functional relationship. The ultimate breakup length increased with the increase of the atomizer outlet diameter.
| [1] |
DAFSARI R A,LEE H J,HAN J,et al. Evaluation of the atomization characteristics of aviation fuels with different viscosities using a pressure swirl atomizer[J]. International Journal of Heat and Mass Transfer,2019,145: 118704. doi: 10.1016/j.ijheatmasstransfer.2019.118704
|
| [2] |
王平,汪凤山,胡羽,等. 离心喷嘴脉冲工作动态特性实验研究[J]. 推进技术,2022,43(9): 210196. WANG Ping,WANG Fengshan,HU Yu,et al. Experimental study on dynamic characteristics of swirl injector working in pulse mode[J]. Journal of Propulsion Technology,2022,43(9): 210196. (in Chinese
WANG Ping, WANG Fengshan, HU Yu, et al. Experimental study on dynamic characteristics of swirl injector working in pulse mode[J]. Journal of Propulsion Technology, 2022, 43(9): 210196. (in Chinese)
|
| [3] |
张丁为,富庆飞,杨立军. 液液同轴离心式喷嘴动态特性理论研究[J]. 推进技术,2022,43(9): 210499. ZHANG Dingwei,FU Qingfei,YANG Lijun. Theoretical study on dynamic characteristics of liquid-liquid coaxial swirl injector[J]. Journal of Propulsion Technology,2022,43(9): 210499. (in Chinese
ZHANG Dingwei, FU Qingfei, YANG Lijun. Theoretical study on dynamic characteristics of liquid-liquid coaxial swirl injector[J]. Journal of Propulsion Technology, 2022, 43(9): 210499. (in Chinese)
|
| [4] |
楚威,李修乾,仝毅恒,等. 液体中心式同轴离心喷嘴液膜破碎特性仿真研究[J]. 推进技术,2021,42(7): 1522-1533. CHU Wei,LI Xiuqian,TONG Yiheng,et al. Numerical study on breakup characteristics of liquid film of liquid-centered swirl coaxial injectors[J]. Journal of Propulsion Technology,2021,42(7): 1522-1533. (in Chinese
CHU Wei, LI Xiuqian, TONG Yiheng, et al. Numerical study on breakup characteristics of liquid film of liquid-centered swirl coaxial injectors[J]. Journal of Propulsion Technology, 2021, 42(7): 1522-1533. (in Chinese)
|
| [5] |
KANG Zhongtao,WANG Zhenguo,LI Qinglian,et al. Review on pressure swirl injector in liquid rocket engine[J]. Acta Astronautica,2018,145: 174-198. doi: 10.1016/j.actaastro.2017.12.038
|
| [6] |
高琦翔,孙虎,王焕燃,等. 反压对收口型离心喷嘴液膜厚度的影响[J]. 火箭推进,2023,49(3): 83-89. GAO Qixiang,SUN Hu,WANG Huanran,et al. Effect of backpressure on liquid film thickness of close-end swirl injector[J]. Journal of Rocket Propulsion,2023,49(3): 83-89. (in Chinese doi: 10.3969/j.issn.1672-9374.2023.03.009
GAO Qixiang, SUN Hu, WANG Huanran, et al. Effect of backpressure on liquid film thickness of close-end swirl injector[J]. Journal of Rocket Propulsion, 2023, 49(3): 83-89. (in Chinese) doi: 10.3969/j.issn.1672-9374.2023.03.009
|
| [7] |
RAMAMURTHI K,THARAKAN T J. Experimental study of liquid sheets formed in coaxial swirl injectors[J]. Journal of Propulsion and Power,1995,11(6): 1103-1109. doi: 10.2514/3.23947
|
| [8] |
SANTOLAYA J L,AÍSA L A,CALVO E,et al. Experimental study of near-field flow structure in hollow cone pressure swirl sprays[J]. Journal of Propulsion and Power,2007,23(2): 382-389. doi: 10.2514/1.20713
|
| [9] |
SCHMIDT D P,NOUAR I,SENECAL P K,et al. Pressure-swirl atomization in the near field[R]. SAE Technical Paper Series 1999-01-0496,1999.
|
| [10] |
SENECAL P K,SCHMIDT D P,NOUAR I,et al. Modeling high-speed viscous liquid sheet atomization[J]. International Journal of Multiphase Flow,1999,25(6/7): 1073-1097.
|
| [11] |
LIAO Y,SAKMAN A T,JENG S M,et al. A comprehensive model to predict simplex atomizer performance[J]. Journal of Engineering for Gas Turbines and Power,1999,121(2): 285-294. doi: 10.1115/1.2817119
|
| [12] |
YAO Shanshan,ZHANG Ji,FANG Tiegang. Effect of viscosities on structure and instability of sprays from a swirl atomizer[J]. Experimental Thermal and Fluid Science,2012,39: 158-166. doi: 10.1016/j.expthermflusci.2012.01.020
|
| [13] |
DING Jiawei,LI Guoxiu,YU Yusong. The instability and droplet size distribution of liquid-liquid coaxial swirling spray: an experimental investigation[J]. Experimental Thermal and Fluid Science,2017,82: 166-173. doi: 10.1016/j.expthermflusci.2016.11.014
|
| [14] |
JEONG S,YOON Y. Sheet-breakup characteristics of a closed-type swirl injector considering internal flow instability[J]. Acta Astronautica,2021,186: 363-371. doi: 10.1016/j.actaastro.2021.05.049
|
| [15] |
IBRAHIM A A,JOG M A. Nonlinear instability of an annular liquid sheet exposed to gas flow[J]. International Journal of Multiphase Flow,2008,34(7): 647-664. doi: 10.1016/j.ijmultiphaseflow.2007.12.003
|
| [16] |
FU Qingfei,YANG Lijun,QU Yuanyuan,et al. Linear stability analysis of a conical liquid sheet[J]. Journal of Propulsion and Power,2010,26(5): 955-968. doi: 10.2514/1.48346
|
| [17] |
ZHAO Yue,WANG Lei,WU Yingchun,et al. Perforation induced ligament evolution in low-temperature swirl spray via off-axis holography[J]. International Journal of Multiphase Flow,2023,161: 104384. doi: 10.1016/j.ijmultiphaseflow.2023.104384
|
| [18] |
丁佳伟. 液/液同轴旋转射流稳定性及液膜破碎机理研究[D]. 北京: 北京交通大学,2017. DING Jiawei. Study on stability and liquid sheet breakup mechanism of liquid/liquid coaxial swirling jets[D]. Beijing: Beijing Jiaotong University,2017. (in Chinese
DING Jiawei. Study on stability and liquid sheet breakup mechanism of liquid/liquid coaxial swirling jets[D]. Beijing: Beijing Jiaotong University, 2017. (in Chinese)
|
| [19] |
LIU Yang,ZHANG Huiqiang,LI Yanfei,et al. Numerical investigation on the hole characteristics and perforation mechanism of conical liquid sheet[J]. Thermal Science and Engineering Progress,2022,29: 101225. doi: 10.1016/j.tsep.2022.101225
|
| [20] |
SHAO Changxiao,LUO Kun,CHAI Min,et al. Sheet,ligament and droplet formation in swirling primary atomization[J]. AIP Advances,2018,8(4): 045211. doi: 10.1063/1.5017162
|
| [21] |
何昌升,刘云鹏,韩宗英,等. 平板式预膜喷嘴初次雾化特性试验[J]. 航空动力学报,2020,35(3): 482-492. HE Changsheng,LIU Yunpeng,HAN Zongying,et al. Experiment on primary atomization characteristics of planar prefilming nozzle[J]. Journal of Aerospace Power,2020,35(3): 482-492. (in Chinese
HE Changsheng, LIU Yunpeng, HAN Zongying, et al. Experiment on primary atomization characteristics of planar prefilming nozzle[J]. Journal of Aerospace Power, 2020, 35(3): 482-492. (in Chinese)
|
| [22] |
赖安卿,刘云鹏,付尧明,等. 振荡燃烧火焰图像处理[J]. 燃烧科学与技术,2020,26(1): 10-17. LAI Anqing,LIU Yunpeng,FU Yaoming,et al. Image processing of combustion oscillating flame[J]. Journal of Combustion Science and Technology,2020,26(1): 10-17. (in Chinese
LAI Anqing, LIU Yunpeng, FU Yaoming, et al. Image processing of combustion oscillating flame[J]. Journal of Combustion Science and Technology, 2020, 26(1): 10-17. (in Chinese)
|
| [23] |
DOMBROWSKI N,JOHNS W R. The aerodynamic instability and disintegration of viscous liquid sheets[J]. Chemical Engineering Science,1963,18(3): 203-214. doi: 10.1016/0009-2509(63)85005-8
|
| [24] |
ZHANG Jun,LIANG Pengfei,LIU Youzhi. Impingement and breakup characteristics of free opposed impinging jets with unequal nozzle diameter[J]. Experimental Thermal and Fluid Science,2023,145: 110884. doi: 10.1016/j.expthermflusci.2023.110884
|
DownLoad:
