加力用扇形喷嘴雾化特性试验

邸东; 刘雨辰; 王亚军

doi:10.13224/j.cnki.jasp.2020.03.002

加力用扇形喷嘴雾化特性试验

doi: 10.13224/j.cnki.jasp.2020.03.002

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出版历程
- 收稿日期: 2019-09-24
- 刊出日期: 2020-03-28

Experiment on atomization characteristics of fan nozzle

1.
College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
2.
Sichuan Gas Turbine Establishment,Aero Engine Corporation of China,Chengdu 610500,China

摘要

摘要: 根据加力燃烧室内锥凹腔点火与联焰要求,设计了扇形喷嘴并开展相应的雾化试验,研究了供油压差、扇形角度及扇形出口高度等参数对流量特性和雾化特性的影响以及加力环境下横向气流的温度、速度和供油压差对索太尔平均直径(SMD)及穿透深度的影响。采用称质量法测量流量系数,利用马尔文粒度仪和高速摄影仪对下游SMD、雾化角度及穿透深度进行测量。结果表明:①供油压差增大,流量系数先减少,后稳定;②供油压差一定,扇形出口角度越大,流量系数和雾化角度也越大;③扇形出口高度增加,雾化效果变好;④出口位置对雾化特性影响不大;⑤供油压差越大,穿透深度越大,SMD减小;⑥横向气流速度越大、温度越高,穿透深度越浅,油雾场越靠近下游;⑦横向气流温度越高, SMD越小。
- 扇形喷嘴 /
- 雾化特性 /
- 流量系数 /
- 雾化角度 /
- 索太尔平均直径 /
- 穿透深度
Abstract: According to the requirements of the cone cavity ignition and the flame crossover in the afterburner, the fan nozzle for the cavity ignition and flame crossover was designed, and the corresponding atomization test was carried out to study the effect of the fuel supply pressure difference, fan angle and the fan exit height on the discharge and atomization characteristics of the fan nozzle and the effect of the temperature, speed and fuel supply pressure difference of the lateral airflow on the penetration depth and the Sauter mean diameter (SMD) under afterburning environment. Weighing method was used to test the discharge coefficient of the fan nozzles. And the Malvern laser particle size analyzer and high speed camera were used to measure the SMD of the droplets, spray angle and penetration depth, respectively. Results suggested that: (1) with the increase of fuel supply pressure difference, the discharge coefficient decreased first and then became insensitive to fuel supply pressure difference. (2) Under the same fuel sypply pressure difference, the discharge coefficient and spray angle increased with the increase of fan angle. (3) With the increase of fan exit height, the atomization effect became better. (4) In addition to the above mentioned results, the mounting position had less effect on the atomization characteristics of the fan nozzles. (5) As the oil supply pressure difference increased, the penetration depth of the fan nozzle increased, and the SMD decreased. (6) The greater lateral airflow speed and temperature, the smaller the penetration depth, and the oil mist field was closer to the downstream section. (7) As the lateral airflow temperature increased, the SMD decreased.
- fan nozzle /
- atomization characteristics /
- discharge coefficient /
- spray angle /
- Sauter mean diameter /
- penetration depth

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参考文献(21)

[1]	PAYRI R,TORMOS B,SALVADOR F J,et al.Spray droplet velocity characterization for convergent nozzles with three different diameters［J］.Fuel,2008,87(15):3176-3182.
[2]	PAYRI R,SALVADOR F J,MART-ALDARAV P,et al.ECN Spray G external spray visualization and spray c ollapse description through penetration and morphology analysis［J］.Applied Thermal Engineering,2016,112(5):304-316.
[3]	曹睿,刘艳升,严超宇,等.垂直锐边孔口的自由出流特性:Ⅰ 流动状态和孔结构参数对孔流系数的影响［J］.化工学报,2008,59(9):2175-2180. CAO Rui,LIU Yansheng,YAN Chaoyu,et al.Characteristics of vertical sharp dged orifice discharge:Ⅰ effect of flow regime and configuration parameters on orifice discharge coefficient［J］.Journal of Chemical Industry,2008,59(9):2175-2180.(in Chinese)
[4]	REITZ R D.Mechanism of atomization of a liquid jet［J］.Physics of Fluids,1982,25(10):1730-1742.
[5]	张弛,张荣伟,徐国强,等.直射式双旋流空气雾化喷嘴的雾化效果［J］.航空动力学报,2006,21(5):805-809. ZHANG Chi,ZHANG Rongwei,XU Guoqiang,et al.Experimental investigation on atomization of an ait-blast atomizer with plain-orifice nozzle and dual-swirl cup［J］.Journal of Aerospace Power,2006,21(5):805-809.(in Chinese)
[6]	范明豪,刘英卫,周华,等.直射式高压喷嘴雾化分析［J］.中国机械工程,2005,16(19):80-83. FAN Minghao,LIU Yingwei,ZHOU Hua,et al.Analysis on spray atomization of direct jet high pressure nozzle［J］.China Mechanical Engineering,2005,16(19):80-83.(in Chinese)
[7]	金仁喜,袁江涛,杨立,等.压力喷嘴常温下雾化特性实验研究［J］.海军工程大学学报,2012,24(3):52-56. JIN Renxi,YUAN Jiangtao,YANG Li,et al.Experimental study of spray characteristics of pressure nozzle at room temperature［J］.Journal of Naval University of Engineeing,2012,24(3):52-56.(in Chinese)
[8]	熊溢威,李锋,高伟伟,等.直射式喷嘴流动特性的数值和试验研究［J］.航空发动机,2016,42(6):68-75. XIONG Yiwei,LI Feng,GAO Weiwei,et al.Numerical and experimental study of flow characteristics of direct sprayed nozzle［J］.Aeroengine,2016,42(6):68-75.(in Chinese)
[9]	王少林,黄勇,邹婷,等.空化对燃油喷嘴雾化的影响［J］.推进技术,2014,35(3):397-402. WANG Shaolin,HUANG Yong,ZOU Ting,et al.Effects of cavitation in nozzle on spray［J］.Journal of Propulsion Technology,2014,35(3):397-402.(in Chinese)
[10]	秦伟林,何小民,金义,等.凹腔驻涡与支板稳焰组合加力燃烧室模型冷态流场试验［J］.航空动力学报,2012,27(6):1347-1354. QIN Weilin,HE Xiaomin,JIN Yi,et al.Cold flow field test of combined combustion chamber model of concave cavity and vortex-stabilized flame［J］.Journal of Aerospace Power,2012,27(6):1347-1354.(in Chinese)
[11]	张新铭,罗晴,洪光,等.高压水扇形喷嘴结构参数对内部流场影响的数值模拟［J］.热能动力工程,2012,27(3):301-306. ZHANG Xinming,LUO Qing,HONG Guang,et al.Numerical simulation of the influence of the structural parameters of a high pressure water sector-shaped nozzle on its internal flow field［J］.Journal of Engineering for Thermal Energy and Power,2012,27(3):301-306.(in Chinese)
[12]	梁博健,高殿荣.高压扇形喷嘴结构参数的优化［J］.排灌机械工程学报,2020,38(1):69-75. LIANG Bojian,GAO Dianrong.Design and optimization on the fan nozzle structure parameters［J］.Journal of Drainage and Irrigation Machinery Engineering,2020,38(1):69-75.(in Chinese)
[13]	THOMPSON J C,ROTHSTEIN J P.The atomization of viscoelastic fluids in flat-fan and hollow-cone spray nozzles［J］.Journal of Non-Newtonian Fluid Mechanics,2007,147(1):11-22.
[14]	王国志,周万阳,邓斌,等.基于CFD的扇形喷嘴不同切割结构研究［J］.科学技术与工程,2015,15(33):146-149. WANG Guozhi,ZHOU Wanyang,DENG Bin,et al.Research on different cutting structures of flat fan nozzle based on CFD［J］.Science Technology and Engineering,2015,15(33):146-149.(in Chinese)
[15]	ZHOU Q,MILLER P C H,WALKLATE P J,et al.Prediction of spray angle from flat fan nozzles［J］.Journal of Agricultural Engineering Research,1996,64(2):139-148.
[16]	SNYDER T S,BRDAR C R,BUEY J R.Augmentor pilot nozzle:US6971239 B2［P］.2005-09-20.
[17]	林翔.扇形喷嘴的高压射流特性研究［D］.成都:西南交通大学,2014. LIN Xiang.Study of high-pressure jet characteristics of fan-shaped nozzles［D］.Chengdu:Southwest Jiaotong University,2014.(in Chinese)
[18]	林翔,刘桓龙,王国志,等.扇形喷嘴的低压射流特性研究［J］.机床与液压,2015,43(3):164-167. LIN Xiang,LIU Huanlong,WANG Guozhi,et al.Study of low-pressure jet characteristic of fan nozzle［J］.Machine tool and Hydraulics,2015,43(3):164-167.(in Chinese)
[19]	张晓东,郝鹏飞,董志国,等.扁平扇形喷嘴的设计研究［J］.机械设计与研究,2008,24(5):63-65,73. ZHANG Xiaodong,HAO Pengfei,DONG Zhiguo,et al.Design research of flat fan nozzle［J］.Machine Design and Research,2008,24(5):63-65,73.(in Chinese)
[20]	伍文锋,吴建华,钟柳花,等.航空发动机燃油喷嘴雾化角度测量研究［J］.航空发动机,2017,43(5):69-73. WU Wenfeng,WU Jianhua,ZHONG Liuhua,et al.Research on aeroengine fuel nozzle spray angle masurement［J］.Aeroengine,2017,43(5):69-73.(in Chinese)
[21]	刘济祥.螺旋式喷嘴雾化特性实验研究［D］.沈阳:东北大学,2017. LIU Jixiang.Experimental study on atomization characteristics of spiral nozzles［D］.Shenyang:Northeastern University,2017.(in Chinese)