›› 2012, Vol. 42 ›› Issue (04): 871-876.

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Multi-droplet stream creating system of hydrocarbon fuel based on ultrasonic atomization technology

HU Zong-jie1, XIAO Chun-jiang1, LI Zhi-long1, NILS Haneklaus1,2, GONG Hui-feng1, WU Zhi-jun1   

  1. 1. School of Automotive Studies, Tongji University, Shanghai 200092, China;
    2. Institute of Thermal Turbomachinery and Machinery Laboratory, University of Stuttgart, Stuttgart 70569, Germany
  • Received:2012-01-11 Online:2012-07-01 Published:2012-07-01

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Abstract: An experimental multi-droplet stream creating system was developed for the hydrocarbon fuel based on the ultrasonic atomization and the carrier-gas transport techniques. The speed and global equivalence ratio of the stream could be controlled independently to simulate really the flow and mixing conditions of the droplets at the spray fringes. The stream scattering light was photographed by a high-speed camera at 90? angle using a high intensity LED light source under different air flow rates(10,20,30 and 40 L/min) and different n-heptane supply rates(150,200,250 and 300 mL/h). The pictures showed that there was a stable flow near the nozzle exit and its length increases firstly and then decreases with air flow increasing because of the combined effect of air entrainment and droplet vaporization. When the stream speed at nozzle exit was lower than 5.2 m/s, appeared the obvious air entrainment eddies after the stable sector, and the lower the speed, the more eddy number and the more regular the eddy form. When the stream was far away from the nozzle exit, the multi-droplet stream might not be shot by its scattering at 90癮ngle because of the droplet diffusion and vaporization.

Key words: power machinery and engineering, ultrasonic atomization, multi-droplet stream, n-heptane, scattering

CLC Number: 

  • TK421
[1] 孙田,苏万华,郭红松.应用激光诱导荧光法研究超高压喷雾气液相浓度场分布特性[J].内燃机学报, 2007, 25(2):97-104. Sun Tian, Su Wan-hua, Guo Hong-song. Study of concentration distribution of liquid and vapor-phase of diesel spray injected at ultra-high injection pressure by planar laser induced exciplex fluorescence technique[J]. Transactions of CSICE, 2007, 25(2):97-104.
[2] 马晓,何旭,王建昕,等. 用激光诱导荧光法测量GDI发动机缸内混和气分布[J]. 内燃机工程, 2010, 31(4):1-5. Ma Xiao, He Xu, Wang Jian-xin, et al. In-cylinder mixture distribution measurement in a GDI engine using laser-induced fluorescence[J]. Chinese International Combustion Engine Engineering. 2010, 31(4):1-5.
[3] Abdullah Adam, Tomoaki Yatsufusa, Tomonori Gomi, et al. Analysis of droplets evaporation process of diesel spray at ignition delay period using dual nano-spark shadowgraph photography method//SAE Paper 2009-32-0017.
[4] Abdullah Adam, Naoki Inukai, Yoshiyuki Kidoguchi, et al. A study on droplets evaporation at diesel spray boundary during ignition delay period//SAE Paper, 2007-01-1893.
[5] Zigan L, Schmitz I, Flugel A, et al. Structure of evaporating single and multicomponent fuel sprays for 2nd generation gasoline direct injection[J]. Fuel, 2011,90(1):348-363.
[6] Jennifer Labs, Terry Parker. Two-dimensional droplet size and volume fraction distribution from the near-injector region of high-pressure diesel sprays[J]. Atomization and Sprays, 2006,16(7):843-855.
[7] George Strotos, Manolis Gavaises, Andreas Theodorakakos, et al. Numerical investigation of the evaporation of two-component droplets[J]. Fuel,2011,90 (4):1492-1507.
[8] Wong Shwin-Chung, Chang Jyh-Cheng. Evaporation of non-dilute and dilute monodispersed droplet clouds[J]. International Journal of Heat and Mass Transfer, 1992,35(10):4215-4228.
[9] 舒国才,杨长林,居荫诚,等. 柴油机喷雾蒸发过程的模拟计算与分析[J]. 燃烧科学与技术,1995,1(3):235-240. Shu Guo-cai, Yang Chang-lin, Jü Yin-cheng, et al. Simulation and analysis of evaporation process of diesel spray[J]. Journal of Combustion Science and Technology, 1995, 1(3):235-240.
[10] 周磊,解茂昭,贾明,等. 高压燃油喷雾雾化与蒸发过程的大涡模拟[J]. 内燃机学报,2010,28(3):241-246. Zhou Lei, Xie Mao-zhao, Jia Ming, et al. Large eddy simulation on atomization and evaporation of a high-pressure fuel spray[J]. Transactions of CSICE, 2010, 28(3):241-246.
[11] 张煜盛.柴油机喷雾两相流蒸发混合的数学模型研究[J]. 华中理工大学学报,1993, 21(3):156-160. Zhang Yu-sheng. A two-phase flow model for the prediction of the evaporation spray mixing process in diesel engines[J]. Journal of Huazhong University of Science & Technology, 1993,21(3):156-160.
[12] Ghosh Joydeep, Mukhopadhyay Achintya, Rao Gurram V, et al. Analysis of evaporation of dense cluster of bicomponent fuel droplets in a spray using a spherical cell model[J]. International Journal of Thermal Sciences, 2008,47(5):584-590.
[13] Lavieille P, Lemoine F, Lebouche M. Investigation on temperature of evaporating droplets in linear stream using two-color laser-induced fluorescence[J]. Combustion Science and Technology, 2002,174(4):117-142.
[14] Imaoka Randall T, Sirignano William A. Vaporization and combustion in three-dimensional droplet arrays//The 30th International Symposium on Combustion. Proceedings of the Combustion Institute (Part 2), Chicago:Combust Inst, 2005:1981-1989.
[15] Imaoka Randall T, Sirignano William A. Transient vaporization and burning in dense droplet arrays[J]. International Journal of Heat and Mass Transfer, 2005,48(21-22):4354-4366.
[16] Depredurand V, Castanet G, Lemoine F. Heat and mass transfer in evaporating droplets in interaction:influence of the fuel[J]. International Journal of Heat and Mass Transfer, 2010,53(17-18):3495-3502.
[17] Maqua C, Castanet G, Grisch F, et al. Monodisperse droplet heating and evaporation:Experimental study and modeling[J]. International Journal of Heat and Mass Transfer, 2008,51 (15-16):3932-3945.
[18] Kristyadi T, Depredurand V, Castanet G, et al. Monodisperse monocomponent fuel droplet heating and evaporation[J]. Fuel,2010,89(12):3995-4001.
[19] 袁江涛,杨立,孙嵘,等. 高温气流内雾滴运动与蒸发的理论分析[J]. 海军工程大学学报,2008, 20(2):5-8. Yuan Jiang-tao, Yang Li, Sun Rong, et al. Water droplet movement and its evaporation characteristics in high temperature gas flow[J]. Journal of Naval University of Engineering,2008, 20(2):5-8.
[20] 高原,李春望,廖卓,等. 非食用源生物柴油喷雾特性的试验研究[J]. 内燃机工程,2010, 31(1):32-37. Gao Yuan, Li Chun-wang, Liao Zhuo, et al. Experimental research on spray characteristics of unedible biodiesel[J]. Chinese International Combustion Engine Engineering,2010, 31(1):32-37.
[21] Nijdam J J, Starner S H, Langrish T A G. An experimental investigation of droplet evaporation and coalescence in a simple jet flow[J]. Experiments in Fluids, 2004,37(4):504-517.
[22] 梁泽钦,邱红喜,杨明丰,等. 超声雾化加湿系统研究与设计[J]. 武汉工业学院学报,2006, 25(3):24-26. Lian Ze-qin, Qiu Hong-xi, Yang Ming-feng, et al. Study and design on the ultrasonic atomization watering system[J]. Journal of Wuhan Polytechnic University,2006, 25(3):24-26.
[23] 王俐,连之伟,刘蔚巍. 结合超声雾化技术的液体除湿系统分析[J]. 中南大学学报:自然科学版, 2011,42(1):240-246. Wang Li, Lian Zhi-wei, Liu Wei-wei. Analysis of liquid-desiccant dehumidifying system combined with ultrasound atomization technology[J]. Journal of Central South University (Science and Technology), 2011,42(1):240-246.
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