横向加热气流中直射式喷嘴侧喷雾化特性研究

推进技术 ›› 2013, Vol. 34 ›› Issue (5): 658-663.

横向加热气流中直射式喷嘴侧喷雾化特性研究

金仁瀚¹,张铮²,刘勇¹,赵坚行¹

南京航空航天大学能源与动力学院,江苏南京 210016;安徽理工大学土木建筑学院,安徽淮南 232001;南京航空航天大学能源与动力学院,江苏南京 210016;南京航空航天大学能源与动力学院,江苏南京 210016

发布日期:2021-08-15
作者简介:金仁瀚(1985—),男,博士生,研究领域为航空发动机燃烧室燃油雾化。E-mail:kingrenhan@163.com

Experimental Study on Atomization Characteristics of Simple Nozzle in Heating Cross Flow

College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics, Nanjing 210016,China;College of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001,China;College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics, Nanjing 210016,China;College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics, Nanjing 210016,China

Published:2021-08-15

摘要/Abstract

摘要： 为了研究燃油在横向高温气流中的雾化特性,使用粒子图像测速系统(PIV)及数字图像处理技术对直射式喷嘴垂直喷入高温气流中形成的油雾场进行了图像测量和分析。试验研究了不同喷射压力、气流温度对粒径分布、下游不同区域SMD及空间分布均匀性的影响。试验结果表明:(1)提高喷射压力,基本不会改变颗粒PDF分布；(2)高温气流中,喷射压力的提高,反而会导致测量到的液滴相颗粒数目减少,但颗粒的SMD也在减小；(3)在高温气流流动方向不同区域,气动雾化颗粒破碎效应和蒸发导致的颗粒尺寸减小的行为是竞争关系。 

关键词: 直射式喷嘴;粒径分布;粒子图像测速系统;二次雾化 

Abstract: In order to study the atomization characteristics of fuel in the high temperature cross airflow with high temperature, a Particle Image Velocimetry (PIV) and the digital image processing techniques are employed to capture digital pictures of the fuel spray fields for the simple nozzle in such a flow. Experimental results of the spray field show that:(1) With the injection pressure increasing, the particle PDF distribution changes little; (2) In high temperature flow, the increase of injection pressure leads to the number reduction of liquid particles, but the Sauter Mean Diameter (SMD) still decreases; (3) In different areas along high temperature flow direction, the particle breakage effect caused by pneumatic atomization and particle size decrease led by evaporation are in competitive relation. 

Key words: Plain-orifice atomizer；Particle size distribution；Particle image velocimetry system (PIV); Secondary atomization

金仁瀚,张铮,刘勇,赵坚行. 横向加热气流中直射式喷嘴侧喷雾化特性研究[J]. 推进技术, 2013, 34(5): 658-663.

JIN Ren-han¹,ZHANG Zheng²,LIU Yong¹,ZHAO Jian-xing¹. Experimental Study on Atomization Characteristics of Simple Nozzle in Heating Cross Flow[J]. Journal of Propulsion Technology, 2013, 34(5): 658-663.

参考文献

[1] 张岩,朱俊勇,金如山.在横向气流中直射式喷嘴侧喷雾化细度的试验研究 [J].宇航学报,1988,1(1):39-48.
[2] 王俭, 顾善建, 杨茂林,等.直射式喷嘴跨流喷射的雾化特性实验研究[J].航空学报,1990,11(4):157-164.
[3] 顾善建,王俭,杨茂林.直射式喷嘴垂直跨流喷射的雾化特性试验研究 [J].北京航空航天大学学报,1993,(4):39-43.
[4] 徐圃青,王家骅.低压下直流式喷嘴雾化特性试验研究[J].航空动力学报,1996,11(3):273-276.
[5] Chin J S, Lefebvre A H.Steady State Evaporation Characteristics of Hydrocarbon Fuel Drops[R].AIAA 82-1176.
[6] Chin J S, Lefebvre A H.Semi-Empirical Analysis of Liquid Fuel and Fuel Vapor Distribution Downstream of a Plain-Orifice Injector with Cross-Stream Air Flow[R].AIAA 85-1320.
[7] 杨桂祥,金如山.加热空气流中燃油液雾特性 [J].航空动力学报,1989,1(1):76-78.
[8] Sallam K A, Aalburg C, Faeth G M.Breakup of Round Nonturbulent Liquid Jets in Gaseous Crossflow[J].AIAA Journal,2004,2(12):2529-2540.
[9] Omar M Elshamy, Samir B Tambe,Jun Cai,et al.Excited Liquid Jets in Subsonic Crossflow[R].AIAA 2007-1340.
[10] 刘林峰,徐胜利,郑日恒,等.超声速气流中凹槽结构煤油喷射和掺混研究[J].推进技术,2010,31(6):721-729.(LIU Lin-feng,XU Sheng-li,ZHENG Ri-heng,et al.Studies on Kerosene Injection and Mixing with Cavity in Supersonic Flow[J].Journal of Propulsion Technology,2010,1(1):721-729.)
[11] Dixon D R, Gruber M R, Jackson T A.Structures of Angled Aerated-Liquid Jets in Mach 1.94Supersonic Cross Flow[R].AIAA 2005-733.
[12] Lin K G, Kirkendalf K A, Kennedy P J.Spray Structures of Aerated Liquid Fuel Jets in Supersonic Crossflows[R].AIAA 99-2374.
[13] Ganesh Anavaradham T K, Shreenivasan O J, Sujith R I, et al.Investigation of Transverse Liquid Injection in Confined Supersonic Flow over Cavities[R].AIAA 2004-4075.
[14] 冯守义,牛志刚,费立群,等.高密度烃燃料雾化特性试验[J].推进技术,2011,32(4):512-519.( FENG Shou-yi,NIU Zhi-gang,FEI Li-qun,et al.Experiment on Atomization Characteristics of High Density Hydrocarbon[J].Journal of Propulsion Technology,2011,2(4):512-519.)
[15] 邢小军, 徐行, 郭志辉,等.模型燃烧室冷态喷雾场的实验研究[J].推进技术, 2000,1(5):61-65.(XING Xiao-jun,XU Hang,GUO Zhi-hui,et al.Experimental Study on Spray Field in Combustor by Phase Dopplor Analyzer[J].Journal of Propulsion Technology, 2000,1(5):61-65.)
[16] Zhu Jun yong, Chin Ju shan.The Study on the Interdependence of Spray Characteristics and Evaporation History of Fuel Spray in High Temperature Air Crossflow[R].AIAA 86-0015.
[17] 张岩,朱俊勇,金如山.简单直射式喷嘴在均匀横向气流中喷雾特性的实验研究 [J].北京航空学院学报,1987,(2):33-41.