Zhang Weilong,Liu Canxu,Liu Hong,et al.Jet Breakup Based on Compressible Two-Fluid Model[J].Journal of Combustion Science and Technology,2020,(04):310-315.[doi:10.11715/rskxjs.R202003012]
基于可压缩双流体模型对射流破碎的研究
- Title:
- Jet Breakup Based on Compressible Two-Fluid Model
- 文章编号:
- 1006-8740(2020)04-0310-06
- 分类号:
- TK401
- 文献标志码:
- A
- 摘要:
- 在OpenFOAM 框架下，基于可压缩双流体模型，应用界面压缩法捕捉气液界面，采用大涡模型处理高速射流中的湍流流动，验证了文献中锥形喷嘴的质量流量和喷雾动量通量实验数据，数值结果和实验数据吻合较好，并在此基础上对射流破碎的机理进行了分析．为分析喷嘴几何结构对破碎的影响，修改ECN spray D 喷嘴的出口直径，得到圆柱形喷嘴，结果发现圆柱形喷嘴的液柱破碎较弱，液核长度较长，因此喷嘴具有一定的锥度可以促进喷嘴出口的射流破碎．
- Abstract:
- Based on the compressible two-fluid model，the interface compression method is applied to capture thegas-liquid interface in the OpenFOAM frame work，and the large eddy simulation model is used to treat the turbulent flow in the high-speed jet，which verifies the experimental data of mass flow rate and spray momentum flux of conical nozzle in the literature. The numerical results and the experimental data are in good agreement，and the mechanism of jet breakup is analyzed on this basis. In order to analyze the effect of nozzle geometry on jet breakup，the cylindrical nozzle is obtained by modifying the outlet diameter of the conical spray Dnozzle from ECN. It is found that the cylindrical nozzle is weak in the breakup of liquid column and the length of the liquid coreis longer. Therefore，the nozzle which has a certain taper tends to promote the jet breakup at the nozzle outlet.
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[1]曾 文,解茂昭,周 磊. 网格密度对内燃机冷态流场大涡模拟的影响[J].燃烧科学与技术,2010,(02):181.
ZENG Wen,XIE Mao-zhao,ZHOU Lei. Effects of Mesh Density on Large-Eddy Simulation of Cold Flowin Internal Combustion Engine[J].Journal of Combustion Science and Technology,2010,(04):181.
[2]尚明涛,张文普,张 科,等. 基于动态增厚火焰模型三维全可压缩非预混燃烧的大涡摸拟[J].燃烧科学与技术,2010,(06):496.
SHANG Ming-tao,ZHANG Wen-pu,ZHANG Ke,et al. Three-Dimensional Full Compressible Large-Eddy Simulation ofNon-Premixed Combustion Using DynamicallyThickened Flame Model[J].Journal of Combustion Science and Technology,2010,(04):496.
[3]王 勇,李国岫,虞育松,等. 启喷阶段高压柴油射流雾化机理的大涡模拟[J].燃烧科学与技术,2012,(05):441.
WANG Yong,LI Guo-xiu,YU Yu-song,et al. LES Simulation of High-Pressure Fuel Jet AtomizationMechanism During the Start of Injection[J].Journal of Combustion Science and Technology,2012,(04):441.
[4]田秀山,赵 辉,许建良,等. 气-液同轴射流的LES-VOF模拟[J].燃烧科学与技术,2012,(05):461.
TIAN Xiu-shan,ZHAO Hui,XU Jian-liang,et al. LES-VOF Simulation of 3D Coaxial Gas-Liquid Jet[J].Journal of Combustion Science and Technology,2012,(04):461.
[5]付佳佳,王昌建,秦 俊,等.氢气喷射火的大涡模拟[J].燃烧科学与技术,2013,(05):473.[doi:10.11715/rskxjs.R201301028]
Fu Jiajia,Wang Changjian,Qin Jun,et al.Large Eddy Simulation of Hydrogen Jet Fire[J].Journal of Combustion Science and Technology,2013,(04):473.[doi:10.11715/rskxjs.R201301028]
[6]徐宝鹏,陈志斌,Wen Jennifer,等.基于混合分数的离散反应模型在火灾大涡数值模拟中的应用[J].燃烧科学与技术,2014,(04):283.[doi:10.11715/rskxjs.R201310031]
Xu Baopeng,Chen Zhibin,Wen Jennifer,et al.Large Eddy Simulation of Fire Dynamics Using a Mixture FractionBased Discrete Reaction Model[J].Journal of Combustion Science and Technology,2014,(04):283.[doi:10.11715/rskxjs.R201310031]
[7]李 科,等. 龙卷旋涡的大涡模拟及能量分离机理[J].燃烧科学与技术,2016,(03):198.[doi:10.11715/rskxjs.R201603030]
Li Ke,Hu Yu,Huang Xingliang,et al. Tornado-Like Vortex Flow and Its Mechanism of EnergySeparation by Large-Eddy Simulation[J].Journal of Combustion Science and Technology,2016,(04):198.[doi:10.11715/rskxjs.R201603030]
[8]隋春杰,等.旋流贫预混燃烧湍流特性的大涡模拟[J].燃烧科学与技术,2017,(01):22.[doi:10.11715/rskxjs.R201603044]
Sui Chunjie,Yang Fan,et al.Large Eddy Simulation of Turbulence Characteristics inSwirling Premixed Flame[J].Journal of Combustion Science and Technology,2017,(04):22.[doi:10.11715/rskxjs.R201603044]
[9]夏一帆,杨 瑶,王高峰,等.甲烷/空气预混射流火焰的大涡模拟[J].燃烧科学与技术,2017,(04):305.[doi:DOI 10.11715/rskxjs.R201703014]
Xia Yifan,Yang Yao,Wang Gaofeng,et al.Large-Eddy Simulation of Premixed Methane/Air Jet Flames[J].Journal of Combustion Science and Technology,2017,(04):305.[doi:DOI 10.11715/rskxjs.R201703014]
[10]颜应文,赵坚行.加力燃烧室污染特性的大涡模拟[J].燃烧科学与技术,2005,(01):68.
[11]周力行.气固两相燃烧双流体大涡模拟的数学模型[J].燃烧科学与技术,2019,(02):95.[doi:10.11715/rskxjs.R201812013]
Zhou Lixing.Mathematical Models for Two-fluid LES of Gas-solid Two-phase Combustion[J].Journal of Combustion Science and Technology,2019,(04):95.[doi:10.11715/rskxjs.R201812013]
备注/Memo
收稿日期：2020-03-15．基金项目：国家自然科学基金资助项目(91641117；51961135105)；天津大学内燃机燃烧学国家重点实验室开放基金资助项目(K2018-04).作者简介：张威龙（1991— ），男，博士研究生，zwldgs@mail.dlut.edu.cn.通信作者：刘 红，女，博士，副教授，hongliu@dlut.edu.cn．