| Citation: | WANG Kai, TANG Liang, LEI Fanpei, et al. Effect of blockage rate on spray characteristics of liquid-liquid pintle multi-injector elements[J]. Journal of Aerospace Power, 2024, 39（7）：20220419 doi: 10.13224/j.cnki.jasp.20220419
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In order to study the influence of blockage rate on the spray characteristics of pintle injector, based on the design idea of a plane pintle injector element, the test parts of the plane pintle multi-injector elements with replaceable components were designed. At the same time, PLIC VOF (piecewise linear interface calculation volume of fluid) multiphase flow simulation method with each phase individually identified and the high-speed photography test method were used to study the influence of blockage rate on the spray angle, spray diffusion angle and spatial distribution of liquid spray in the liquid-liquid pintle multi-injector elements. For the multi-pintle injector element with radial circular orifices, the blockage rate was changed by changing the diameter and the number of radial orifices. For the multi-pintle injector element with radial rectangular orifices, the blockage rate was also changed by changing the rectangular aspect ratio of radial orifices. It was found that the blockage rate had important effect on the spray concentration spatial distribution of spray field. When the total momentum ratio remained unchanged, the effect of blockage rate on the spray field was directly produced by the spatial distance between the adjacent spray fans, and also indirectly produced by the effective momentum ratio on the other hand. The influence of radial orifice shape on the spray field was also essentially transformed into the influence of the blockage rate and effective momentum ratio. The influence of the blockage rate change on the spray angle was only indirectly realized by the effective momentum ratio, which was caused by the change of radial orifice diameter and shape. The spray angle theoretical model of pintle injector element was also applicable to multi-pinlte injector element. Meanwhile, the influence of the blockage rate on the spray diffusion angle and the spray concentration spatial distribution was achieved through two action ways. In addition, the spray radial distribution range increased under the condition of high total momentum ratio, and the liquid spray mass rate increased in the central and outer regions of the spray fan due to the interaction between adjacent injector elements.
| [1] |
刘昌波. 针栓式喷注器雾化特性的多尺度仿真研究[D]. 西安: 西安航天动力研究所,2014. LIU Changbo. Multiscale simulations of primary atomization for the pintle injector[D]. Xi’an: Xi’an Aerospace Propulsion Institute,2014. (in Chinese
LIU Changbo. Multiscale simulations of primary atomization for the pintle injector[D]. Xi’an: Xi’an Aerospace Propulsion Institute, 2014. (in Chinese)
|
| [2] |
岳春国,李进贤,侯晓,等. 变推力液体火箭发动机综述[J]. 中国科学:E辑 技术科学,2009,39(3): 464-468. YUE Chunguo,LI Jinxian,HOU Xiao,et al. Summary of variable thrust liquid rocket engine[J]. Science in China: Series E Technological Sciences,2009,39(3): 464-468. (in Chinese
|
| [3] |
安鹏,姚世强,王京丽,等. 针栓式喷注器的特点及设计方法[J]. 导弹与航天运载技术,2016(3): 50-54. AN Peng,YAO Shiqiang,WANG Jingli,et al. Characteristics and design of pintle injector[J]. Missiles and Space Vehicles,2016(3): 50-54. (in Chinese
|
| [4] |
YU I,CHOI J,KIM T,et al. A study on combustion performance by the shape of slit of the canted slit type pintle injector[J]. Journal of the Korean Society of Propulsion Engineers,2017,21(2): 111-118. doi: 10.6108/KSPE.2017.21.2.111
|
| [5] |
YU I,KIM S,KO Y,et al. Combustion performance of a pintle injector rocket engine with canted slit shape by characteristic length and total momentum ratio[J]. Journal of the Korean Society of Propulsion Engineers,2017,21(1): 36-43. doi: 10.6108/KSPE.2017.21.1.036
|
| [6] |
LEE K,NAM J,KOO J. Experimental research about combustion of multi-hole pintle injector using LOx/GCH4[R]. Beijing: 27th International Colloquium on the Dynamics of Explosions and Reactive Systems,2019.
|
| [7] |
LEE Suji,KOO J,YOON Y. Technology and developing trends of pintle injector for throttleable engine[J]. Journal of the Korean Society of Propulsion Engineers,2017,21(4): 107-118. doi: 10.6108/KSPE.2017.21.4.107
|
| [8] |
RYU H,YU I,KIM W,et al. Experimental investigation on combustion performance of a pintle injector engine with double-row rectangular slot[J]. Journal of the Korean Society of Propulsion Engineers,2017,21(3): 25-33. doi: 10.6108/KSPE.2017.21.3.025
|
| [9] |
LEE S,KIM D,KOO J,et al. Spray characteristics of a pintle injector based on annular orifice area[J]. Acta Astronautica,2020,167: 201-211. doi: 10.1016/j.actaastro.2019.11.008
|
| [10] |
CHEN Huiyuan,LI Qinglian,CHENG Peng. Experimental research on the spray characteristics of pintle injector[J]. Acta Astronautica,2019,162: 424-435. doi: 10.1016/j.actaastro.2019.06.032
|
| [11] |
SAKAKI K,KAKUDO H,NAKAYA S,et al. Combustion characteristics of ethanol/liquid-oxygen rocket-engine combustor with planar pintle injector[J]. Journal of Propulsion and Power,2017,33(2): 514-521. doi: 10.2514/1.B36144
|
| [12] |
SAKAKI K,KAKUDO H,NAKAYA S,et al. Performance evaluation of rocket engine combustors using ethanol/liquid oxygen pintle injector[R]. AIAA2016-5080,2016.
|
| [13] |
KIM H,KANG H,KWON S. Liquid sheet-sheet impinging structure for pintle injector with nontoxic hypergolic bipropellant[J]. Journal of Propulsion and Power,2019,36(2): 302-307.
|
| [14] |
成鹏. 变推力火箭发动机喷雾燃烧动态过程研究[D]. 长沙: 国防科技大学,2018. CHENG Peng. The dynamics of spray combustion in variable thrust rocket engines[D]. Changsha: National University of Defense Technology,2018. (in Chinese
CHENG Peng. The dynamics of spray combustion in variable thrust rocket engines[D]. Changsha: National University of Defense Technology, 2018. (in Chinese)
|
| [15] |
王凯,雷凡培,杨岸龙,等. 针栓式喷注器液膜下漏率预估模型[J]. 航空动力学报,2020,35(10): 2223-2234. WANG Kai,LEI Fanpei,YANG Anlong,et al. Prediction model of leakage rate of liquid sheet in pintle injector[J]. Journal of Aerospace Power,2020,35(10): 2223-2234. (in Chinese doi: 10.13224/j.cnki.jasp.2020.10.023
|
| [16] |
王凯,雷凡培,杨岸龙,等. 径向孔形状对针栓式喷注器液膜下漏率的影响[J]. 航空学报,2021,42(6): 124384. WANG Kai,LEI Fanpei,YANG Anlong,et al. Effect of radial orifice shape on leakage rate of liquid sheet in pintle injector[J]. Acta Aeronautica et Astronautica Sinica,2021,42(6): 124384. (in Chinese
|
| [17] |
王凯,雷凡培,张波涛,等. 针栓式喷注单元雾化角模型分析[J]. 航空学报,2020,41(10): 123622. WANG Kai,LEI Fanpei,ZHANG Botao,et al. Analysis on spray angle model for pintle injector element[J]. Acta Aeronautica et Astronautica Sinica,2020,41(10): 123622. (in Chinese
|
| [18] |
王凯,雷凡培,李鹏飞,等. 壁面边界对撞击合成动量角的影响研究[J]. 推进技术,2019,40(10): 2288-2295. WANG Kai,LEI Fanpei,LI Pengfei,et al. Effects of wall boundary on resultant momentum angle of impinging jets[J]. Journal of Propulsion Technology,2019,40(10): 2288-2295. (in Chinese doi: 10.13675/j.cnki.tjjs.180749
|
| [19] |
刘昌波,周立新,雷凡培. 雾化过程的数值模拟研究综述[J]. 火箭推进,2014,40(1): 10-17. LIU Changbo,ZHOU Lixin,LEI Fanpei. Overview on numerical simulations of primary atomization[J]. Journal of Rocket Propulsion,2014,40(1): 10-17. (in Chinese
|
| [20] |
王凯,杨国华,李鹏飞,等. 离心式喷嘴内部流动过程数值仿真分析[J]. 火箭推进,2016,42(4): 14-20. WANG Kai,YANG Guohua,LI Pengfei,et al. Numerical simulation of internal flow process in pressure swirl injector[J]. Journal of Rocket Propulsion,2016,42(4): 14-20. (in Chinese doi: 10.3969/j.issn.1672-9374.2016.04.003
|
| [21] |
INAMURA T,NAGAI N,SUNANAGA H. Improvement of spray performance of a low-pressure atomizer by conical sheet formation[J]. JSME International Journal Series B,1994,37(4): 924-930. doi: 10.1299/jsmeb.37.924
|
| [22] |
KATE R P,DAS P K,CHAKRABORTY S. An experimental investigation on the interaction of hydraulic jumps formed by two normal impinging circular liquid jets[J]. Journal of Fluid Mechanics,2007,590: 355-380. doi: 10.1017/S0022112007008063
|
| [23] |
INAMURA T. Upwash formation on splash plate atomization[J]. International Journal of Multiphase Flow,2016,85: 67-75. doi: 10.1016/j.ijmultiphaseflow.2016.05.012
|
| [24] |
INAMURA T,ENDO S,OKABE T,et al. Characteristics of liquid upwash formed on a splash plate[J]. International Journal of Multiphase Flow,2018,99: 446-453. doi: 10.1016/j.ijmultiphaseflow.2017.11.011
|
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