Please wait a minute...
浙江大学学报(工学版)
能源与机械工程     
喷油嘴喷孔内流动特性数值仿真与试验分析
谢阳,罗麒元,麻剑,许沧粟
浙江大学 动力机械及车辆工程研究所,浙江 杭州 310027
Numerical simulation and experimental validation of internal nozzle flow characteristic of injector
XIE Yang, LUO Qi yuan, MA Jian, XU Cang su
Institute of Power Driven Machinery and Vehicle Engineering, Zhejiang University, Hangzhou 310027, China
 全文: PDF(1268 KB)   HTML
摘要:

采用X射线相衬成像技术研究喷嘴喷孔内试验的流动特性,验证数值仿真结果.利用CFD软件模拟得到入口压力下燃油的质量流量、空穴分布、有效喷射速度与无量纲流动系数,结合试验数据对流动特性进行分析.结果表明:X射线相衬成像技术的成像效果良好,仿真结果与试验结果吻合较好;喷射压力越高,更容易进入临界超空穴状态;喷孔出口速度的增幅略大于体积流量的增幅;雷诺数随着喷射压力的上升呈幂函数型上升,空穴数随着雷诺数的增加呈指数下降,流量系数都随着雷诺数的上升缓慢增加直至趋于稳定.

Abstract:

The X ray phase contrast imaging technique was used to analyze the flow characteristics of internal nozzle in order to verify the simulation results. The mass flow, cavitation distribution, effective velocity at the outlet and non dimensional flow coefficients under different injection pressure conditions were considered based on the CFD software simulation combined with the experimental results. Results show that X ray phase contrast imaging technique contributes to the research, and the results accord with the simulation results. Critical super cavitation conditions are achieved easier when injection pressure rises. The growth of effective velocity at the outlet is slightly bigger than that of volume flow. Reynolds number shows positive correlation to the injection pressure, while the cavitation number decreases exponentially with increases in the Reynolds numbers. The discharge coefficient increases as the Reynolds number rises until it gets stable.

出版日期: 2016-03-31
:  TK 421  
基金资助:

国家“973”重点基础研究发展规划资助项目(2013CB228100);浙江省公益性技术应用研究计划资助项目(2012C21060).

通讯作者: 许沧粟,男,副教授.     E-mail: xcs0929@163.com
作者简介: 谢阳(1990-),男,硕士生,从事柴油喷雾与数值模拟的研究.ORCID:0000 0002 8534 8959.E-mail:xieyang_auto@163.com
服务  
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章  

引用本文:

谢阳,罗麒元,麻剑,许沧粟. 喷油嘴喷孔内流动特性数值仿真与试验分析[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2016.01.016.

XIE Yang, LUO Qi yuan, MA Jian, XU Cang su. Numerical simulation and experimental validation of internal nozzle flow characteristic of injector. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2016.01.016.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2016.01.016        http://www.zjujournals.com/eng/CN/Y2016/V50/I1/111

[1] LOCKETT R D, LIBERANI L, THAKER D, et al. The characterization on of diesel nozzle flow using high speed imaging of elastic light scattering [J]. Fuel, 2013, 106: 605-616.
[2] HE Z X, ZHONG W J, WANG Q, et al. Effect of nozzle geometrical and dynamic factors on cavitating and turbulent flow in a diesel multi hole injector nozzle [J]. International Journal of Thermal Sciences, 2013, 70: 132-143.
[3] 马志炎, 谢阳, 许沧粟. 生物柴油对喷油嘴喷孔内部流动影响的仿真研究[J]. 内燃机工程, 2014, 35(01): 81-86.
MA Zhi yan, XIE Yang, XU Cang su. Simulation research on effect of biodiesel on fuel flow in nozzle hole [J]. Chinese Internal Combustion Engine Engineering, 2014, 35(01): 81-86.
[4] KASTENGREN A L, POWELL C F, WANG Y, et al.Nozzle geometry and injection duration effects on diesel sprays measured by X ray radiography [J]. Journal of Fluids Engineering Transactions of the ASME, 2008, 130(4): 1-12.
[5] IM K S, CHEONG S K, POWELL C F, et al. Unraveling the geometry dependence of in nozzle cavitation in high pressure injectors [J]. Scientific Reports, 2013, 3(2067): 15.
[6] 张乐超, 魏建勤, 谢红兰, 等. X射线相衬成像技术测量喷油嘴几何特征尺寸的研究[J]. 内燃机学报, 2011, 29(04): 364-369.
ZHANG Le chao, WEI Jian qin, XIE Hong lan, et al. Measurement of nozzle geometry with X ray phase contrast imaging technique [J]. Chinese Internal Combustion Engine Engineering, 2011, 29(04): 364-369.
[7] 马志炎. 柴油机喷油器喷孔内空穴流动的可视化试验研究与数值模拟分析[D]. 杭州:浙江大学,2013.
MA Zhi yan. The visualization experiment and numerical simulation for cavitation flow in a injector nozzle of diesel engine [D]. Hangzhou: Zhejiang University, 2013.
[8] HYUM K S, CHANG S L. Effect of cavitation in nozzle orifice on the diesel fuel atomization characteristics [J].International Journal of Heat and Fluid Flow, 2008, 29(4): 1001-1009.
[9] SU H P, HYUM K S, CHANG S L. Effect of cavitating flow on the flow and fuel atomization characteristics of biodiesel and diesel fuels [J]. Energy and Fuels, 2008, 22(1): 605-613.
[10] SOU A, TOMIYAMA A, HOSOKAWA S, et al. Cavitation in a two dimensional nozzle and liquid jet atomization [J]. JSEM International Journal, 2006, 49(4): 1253-1259.
[11] HENRRY M E, COLLICOTT S H. Visualization of internal flow in a cavitating slot orifice [J]. Atomization and Sprays, 2000, 10(6): 545-563.
[12] 何志霞,柏金,王谦,等. 柴油机喷嘴内空穴流动可视化试验与数值模拟[J]. 农业机械学报, 2011, 42(11): 6-9.
HE Zhi xia, BO Jin, WANG Qian, et al. Visualization experiment and numerical simulation for cavitating flow in a diesel injector nozzle [J]. Transactions of the Chinese Society for Agricultural, 2011, 42(11): 6-9.
[13] FLAIG U, POLACH W, ZIEGLET G. Common rail system (CR system) for passenger car DI diesel engines, experiences with applications for series productions projects [J]. SAE Paper, 1999 01 0191.
[14] 张登攀, 袁银南, 杜家益, 等. 生物柴油自由喷雾的试验研究[J]. 内燃机工程, 2010, 31(06): 13-16.
ZHANG Deng pan, YUAN Yin nan, DU Jia yi, et al. Experimental study on bio diesel free spray [J]. Chinese Internal Combustion Engine Engineering, 2010, 31(06): 13-16.
[15] HE Z X, MU Q, WWANG Q. Effect of diesel nozzle geometry on internal cavitating flow [J]. Advanced Materials Research, 2010, 97 101: 2925-2928.
[16] MOHAMMAD T S T, SHEYEHVAZAYEFI M, GHORBANI M. Numerical study on the effect of the injection pressure on spray penetration length [J]. Applied Mathematical Modeling, 2013, 37(14/15): 7778-7788.

[1] 徐辉, 蔡忆昔, 李小华, 施蕴曦, 李伟俊 . 低温等离子体降低柴油机微粒和NOx排放试验研究[J]. 浙江大学学报(工学版), 2016, 50(12): 2418-2423.
[2] 樊之鹏, 王雷, 徐焕祥, 窦文博, 李道飞, 俞小莉. 涡轮增压器旁通废气能量回收利用[J]. 浙江大学学报(工学版), 2016, 50(12): 2277-2282.
[3] 李孟涵,张强, 李国祥, 邵思东. 高压直喷天然气发动机HC排放[J]. 浙江大学学报(工学版), 2016, 50(2): 341-346.
[4] 方奕栋, 楼狄明, 胡志远, 谭丕强. 连续再生颗粒捕集器对生物柴油发动机颗粒及NOx排放的影响[J]. 浙江大学学报(工学版), 2015, 49(10): 1836-1841.
[5] 谢阳,姚子澍,麻剑,罗麒元,许沧粟. 柴油温度对喷孔内流动特性影响的仿真分析[J]. 浙江大学学报(工学版), 2015, 49(5): 938-943.
[6] 密刚刚,周文华,沈成宇,郭修其. 柴油机高速电磁阀驱动模块设计与故障诊断[J]. J4, 2012, 46(9): 1654-1659.
[7] 郭修其, 周文华, 郑朝武. 基于自动代码生成的共轨压力控制策略[J]. J4, 2011, 45(8): 1441-1445.
[8] 郭修其,周文华,郑朝武. 基于电路仿真的高压共轨电磁阀驱动电路设计[J]. J4, 2011, 45(5): 901-906.
[9] 周文华,竺春狄,苏瑜. 共轨柴油机电控系统若干关键技术[J]. J4, 2011, 45(1): 118-121.
[10] 郑旭,郝志勇,金阳,卢兆刚. 基于MEEMD的内燃机辐射噪声贡献[J]. J4, 2012, 46(5): 954-960.