Effects analysis of RP-3 and RP-5 fuels on atomization characteristics of pressure-swirl atomizer
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摘要:
为探究RP-5和RP-3燃油对双油路离心喷嘴雾化性能的影响,开展不同供油压力下两种燃油对双油路离心喷嘴的质量流量特性、雾化锥角、索太尔平均直径(SMD)及油滴速度等性能影响的研究,结果表明:在各供油压力下,RP-5燃油的喷嘴质量流量大于RP-3燃油,主油路质量流量相差约为5%,副油路质量流量相差约为2%;RP-5和RP-3燃油的喷嘴雾化锥角大小基本一致;当副油路供油质量流量小于8 kg/h时,RP-5燃油的SMD大于RP-3燃油,当副油路供油质量流量大于8 kg/h时,RP-5和RP-3燃油的SMD基本一致;主、副油路同时供油时,随着质量流量不断增加,RP-5燃油的SMD大于RP-3燃油且差值不断增大;随着供油压力升高,RP-5燃油的油滴速度要显著高于RP-3燃油,且都呈现出“M”形分布。
Abstract:In order to explore the effects of RP-5 and RP-3 fuels on the atomization performance of dual-orifice pressure-swirl atomizer, the research on the effects of properties such as flow rate characteristics, cone angle, Sauter mean diameter (SMD) and droplet velocity was carried out for the two kinds of fuels under different fuel supply pressures. The results showed that the flow rate of the RP-5 fuel nozzle was larger than that of the RP-3 fuel. The main fuel line flow differed by about 5%, and the primary fuel line flow differed by about 2%. The nozzle atomization cone angles of RP-5 and RP-3 fuels were basically the same. When the primary fuel supply flow rate was less than 8 kg/h, the SMD of RP-5 fuel was greater than that of RP-3 fuel. When the flow rate was greater than 8 kg/h, the SMD of RP-5 and RP-3 fuels were basically the same. With the continuous increase of the main and primary fuel flows, the SMD of RP-5 fuel was larger than that of RP-3 fuel and the difference continued to increase. With the increase of fuel supply pressure, the droplet velocity of RP-5 fuel was significantly higher than that of RP-3 fuel, all showing an “M”-shaped distribution.
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表 1 RP-3燃油与RP-5燃油的物性参数
Table 1. Physical parameters of RP-3 and RP-5 fuels
燃油种类 密度/
(g/m3)表面张力/
(N/m)运动黏度/
10−6 (m2/s)RP-3 779.1 0.0228 1.48 RP-5 815.9 0.0237 2.02 表 2 试验工况
Table 2. Test conditions
工况 副油路燃油流量/
(kg/h)主油路燃油流量/
(kg/h)1 4 0 2 8 0 3 12 0 4 14 0 5 15 0 6 12 15 7 14 40 8 15 59 -
[1] ZHENG L,LU C B,AN G J,et al. Comparative study on combustion and explosion characteristics of high flash point jet fuel[J]. Procedia Engineering,2014,84: 377-383. doi: 10.1016/j.proeng.2014.10.447 [2] 甘晓华. 航空燃气轮机燃油喷嘴技术[M]. 北京: 国防工业出版社, 2006. [3] 金如山, 索建秦. 先进燃气轮机燃烧室[M]. 北京: 航空工业出版社, 2016. [4] 王良,李维,刘丽娟,等. RP-3和RP-5燃油对全环回流燃烧室点火性能影响研究[J]. 推进技术,2022,43(8): 206-214.WANG Liang,LI Wei,LIU Lijuan,et al. Study on effects of RP-3 and RP-5 jet fuels on ignition performance of full annular reverse flow combustor[J]. Journal of Propulsion Technology,2022,43(8): 206-214. (in Chinese) [5] 祁斌,刘涛,杨彩琼,等. 某型涡轴发动机高低温起动性能试验与分析[J]. 航空动力学报,2021,36(10): 2029-2035.QI Bin,LIU Tao,YANG Caiqiong,et al. Test and analysis on high and low temperature starting performance of a turboshaft engine[J]. Journal of Aerospace Power,2021,36(10): 2029-2035. (in Chinese) [6] 任伟,王涛. RP-3和RP-5煤油对飞机动力装置和燃油系统试飞的影响[J]. 工程与试验,2014,54(1): 49-51.REN Wei,WANG Tao. Effects of RP-3 and RP-5 kerosene on flight test of aircraft power plant and fuel system[J]. Engineering and Test,2014,54(1): 49-51. (in Chinese) [7] MUNZAR J D,AKIH-KUMGEH B,DENMAN B M,et al. An experimental and reduced modeling study of the laminar flame speed of jet fuel surrogate components[J]. Fuel,2013,113: 586-597. doi: 10.1016/j.fuel.2013.05.105 [8] ABIANEH O S,CHEN C P,MAHALINGAM S. Numerical modeling of multi-component fuel spray evaporation process[J]. International Journal of Heat and Mass Transfer,2014,69: 44-53. doi: 10.1016/j.ijheatmasstransfer.2013.10.007 [9] NARAYANASWAMY K,PITSCH H,PEPIOT P. A component library frame work for deriving kinetic mechanisms for multi-component fuel surrogates: application for jet fuel surrogates[J]. Combustion and Flame,2016,165: 288-309. doi: 10.1016/j.combustflame.2015.12.013 [10] 张涛. 航空燃油/乙醇混合燃油旋转锥形液膜雾化特性研究[D]. 辽宁 大连: 大连理工大学, 2019.ZHANG Tao. Effect of kerosene/ethanol blends on spray characteristics of swirling conical liquid sheets[D]. Dalian Liaoning: Dalian University of Technology, 2019. (in Chinese) [11] 刘靖,胡二江,黄佐华,等. RP-3航空燃油与其模型燃料雾化特性的对比试验[J]. 航空动力学报,2022,37(4): 765-773.LIU Jing,HU Erjiang,HUANG Zuohua,et al. Comparative experiment of atomization characteristics of RP-3 kerosene and surrogate fuel[J]. Journal of Aerospace Power,2022,37(4): 765-773. (in Chinese) [12] 王成军,张宝诚,马金凤. 一种双路离心式喷嘴雾化性能的研究[J]. 节能,2008,27(2): 7-8.WANG Chengjun,ZHANG Baocheng,MA Jinfeng. Study on atomization performance of a dual-orifice pressure-swirl atomizer[J]. Energy Conservation,2008,27(2): 7-8. (in Chinese) [13] 徐丽,孙丽艳. QD128燃气轮机燃料适应性试验研究[J]. 汽轮机技术,2015,57(1): 43-45.XU Li,SUN Liyan. Experimental study on fuel adaptability of QD128 gas turbine[J]. Turbine Technology,2015,57(1): 43-45. (in Chinese) [14] 徐丽,张宝诚,刘凯. 航改燃气轮机改用柴油的适应性试验研究[J]. 燃气涡轮试验与研究,2015,28(1): 30-33.XU Li,ZHANG Baocheng,LIU Kai. Experimental study on fuel adaptability of diesel oil for aero-derivative gas turbine[J]. Gas Turbine Experiment and Research,2015,28(1): 30-33. (in Chinese) [15] 刘爱虢,王栋,于浩洋,等. 燃油温度对离心式喷嘴雾化性能影响[J]. 航空动力学报,2020,35(9): 1793-1800.LIU Aiguo,WANG Dong,YU Haoyang,et al. Effect of fuel temperature on atomization characteristics of centrifugal nozzle[J]. Journal of Aerospace Power,2020,35(9): 1793-1800. (in Chinese) [16] 王家俊,桂韬,邱伟,等. 燃油温度对离心喷嘴雾化特性影响的试验[J]. 航空动力学报,2020,35(8): 1643-1654.WANG Jiajun,GUI Tao,QIU Wei,et al. Experiment on the influence of fuel temperature on the atomization characteristics of centrifugal nozzles[J]. Journal of Aerospace Power,2020,35(8): 1643-1654. (in Chinese) [17] 陈富鑫,何小民,周建伟. 不同喷口扩张角下离心喷嘴雾化锥角特性研究[J]. 推进技术,2022,43(7): 224-232.CHEN Fuxin,HE Xiaomin,ZHOU Jianwei. Effects of trumpet angle on spray angle characteristics of pressure swirl atomizer[J]. Journal of Propulsion Technology,2022,43(7): 224-232. (in Chinese) [18] 李辉,龚景松,朴英,等. 煤液化油在雾化过程中的流量特性研究[J]. 推进技术,2016,37(8): 1515-1521.LI Hui,GONG Jingsong,PIAO Ying,et al. Investigation of flow rate characteristics of coal liquefied oil under atomization process[J]. Journal of Propulsion Technology,2016,37(8): 1515-1521. (in Chinese) [19] LEFEBVRE A H. Atomization and sprays[M]. New York, US: Hemisphere Publishing Corporation, 1988. [20] 申力鑫,邢菲,秦腊,等. 双层旋转锥形液膜一次破碎特性数值研究[J]. 航空学报,2021,42(12): 625267.1-625267.13.SHEN Lixin,XING Fei,QIN La,et al. Numerical study on primary breakup characteristics of dual-layer rotating conical liquid sheets[J]. Acta Aeronautica et Astronautica Sinica,2021,42(12): 625267.1-625267.13. (in Chinese)