Multi-Component Model of Diesel Sprays Under High Injection Pressure

doi:10.1007/s12204-017-1898-1

sa ›› 2018, Vol. 23 ›› Issue (2): 264-268.doi: 10.1007/s12204-017-1898-1

Multi-Component Model of Diesel Sprays Under High Injection Pressure

WANG Xiaorong (王筱蓉), WANG Jigang (王继刚), JIN Zhangliang (金张良),REN Guilong (任贵龙), MA Hu (马虎)

(1. School of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China; 2. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China)

出版日期:2018-04-01 发布日期:2018-06-19
通讯作者: WANG Jigang (王继刚) E-mail:wjg_sun@126.com

Multi-Component Model of Diesel Sprays Under High Injection Pressure

WANG Xiaorong (王筱蓉), WANG Jigang (王继刚), JIN Zhangliang (金张良),REN Guilong (任贵龙), MA Hu (马虎)

(1. School of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China; 2. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China)

Online:2018-04-01 Published:2018-06-19
Contact: WANG Jigang (王继刚) E-mail:wjg_sun@126.com

摘要/Abstract

摘要： The combustion efficiency of a diesel engine depends not only on spray characteristics but also on fuel-air mixing characteristics. Based on the original spray model, a new spray model is established in this paper to accurately predict the diesel spray, and then a multi-component evaporation model is added into it. The model takes the influence of component concentration gradient and species on its evaporation rate in the liquid phase into account. This paper studies the spray characteristics (spray penetration, spray angle and spray morphology) and fuel-air mixing characteristics (spray area, spray volume and air entrainment mass) using the spray model, and the results are compared with the experimental results. The comparison shows that the simulated spray penetration and spray angle are close to the experimental results with the average deviations less than 3%. Moreover, this paper studies the spray area, spray volume and air entrainment using empirical formula under different conditions. And the maximum deviations of the spray volume, spray area and air entrainment mass are less than 5% as compared with the test values. Overall, this spray model can predict the diesel spray characteristics and fuel-air mixing characteristics under high injection pressure accurately.

关键词: fuel-air mixing characteristics, multi-component evaporation model, diesel spray, equivalence ratio

Abstract: The combustion efficiency of a diesel engine depends not only on spray characteristics but also on fuel-air mixing characteristics. Based on the original spray model, a new spray model is established in this paper to accurately predict the diesel spray, and then a multi-component evaporation model is added into it. The model takes the influence of component concentration gradient and species on its evaporation rate in the liquid phase into account. This paper studies the spray characteristics (spray penetration, spray angle and spray morphology) and fuel-air mixing characteristics (spray area, spray volume and air entrainment mass) using the spray model, and the results are compared with the experimental results. The comparison shows that the simulated spray penetration and spray angle are close to the experimental results with the average deviations less than 3%. Moreover, this paper studies the spray area, spray volume and air entrainment using empirical formula under different conditions. And the maximum deviations of the spray volume, spray area and air entrainment mass are less than 5% as compared with the test values. Overall, this spray model can predict the diesel spray characteristics and fuel-air mixing characteristics under high injection pressure accurately.

Key words: fuel-air mixing characteristics, multi-component evaporation model, diesel spray, equivalence ratio

中图分类号:

TK 16

WANG Xiaorong (王筱蓉), WANG Jigang (王继刚), JIN Zhangliang (金张良),REN Guilong (任贵龙),. Multi-Component Model of Diesel Sprays Under High Injection Pressure[J]. sa, 2018, 23(2): 264-268.

WANG Xiaorong (王筱蓉), WANG Jigang (王继刚), JIN Zhangliang (金张良),REN Guilong (任贵龙), MA Hu (马虎). Multi-Component Model of Diesel Sprays Under High Injection Pressure[J]. Journal of Shanghai Jiao Tong University (Science), 2018, 23(2): 264-268.

参考文献 15

[1]	MOHAN B, YANGWM, TAY K L, et al. Macroscopicspray characterization under high ambient density conditions[J]. Experimental Thermal and Fluid Science,2014, 59: 109-117.
[2]	XIE H Z, SONG L B, XIE Y Z, et al. An experimentalstudy on the macroscopic spray characteristics ofbiodiesel and diesel in a constant volume chamber [J].Energies, 2015, 8(6): 5952-5972.
[3]	WANG Z M, XU H M, JIANG C Z, et al. Experimentalstudy on microscopic and macroscopic characteristicsof diesel spray with split injection [J]. Fuel, 2016, 174:140-152.
[4]	MOHAN B, YANG W M, TAY K L, et al. Experimentalstudy of spray characteristics of biodiesel derivedfrom waste cooking oil [J]. Energy Conversionand Management, 2014, 88: 622-632.
[5]	PALANI R, NALLUSAMY N, PITCHANDI K. Spraycharacteristics of diesel and derivatives in direct injectiondiesel engines with varying injection pressures [J].Journal of Mechanical Science and Technology, 2015,29(10): 4465-4471.
[6]	YOUNGSOO P, HWANG J, BAE C, et al. Effects ofdiesel fuel temperature on fuel flow and spray characteristics[J]. Fuel, 2015, 162: 1-7.
[7]	ZHANG J, FANG T. Spray combustion of biodieseland diesel in a constant volume combustion chamber[J]. SAE International, 2011. Doi:10.4271/2011-01-1380 (published online).
[8]	DELACOURT E, DESMET B, BESSON B. Characterisationof very high pressure diesel sprays using digitalimaging techniques [J]. Fuel, 2004, 84: 859-867.
[9]	PAYRI R, GARC′IA-OLIVER J M, XUAN T M, et al.A study on diesel spray tip penetration and radial expansionunder reacting conditions [J]. Applied ThermalEngineering, 2015, 90: 619-629.
[10]	WANG X, HAN Z Q, SU W H. A numerical study ofthe effects of pressure fluctuations inside injection nozzleon high-pressure and evaporating diesel spray characteristics[J]. Applied Mathematical Modelling, 2016,40(5): 4032-4043.
[11]	SOMS, AGGARWAL S K. Effects of primary breakupmodeling on spray and combustion characteristics ofcompression ignition engines [J]. Combust and Flame,2010, 157: 1179-1193.
[12]	WANG F, HE Z, LIU J, et al. Diesel nozzle geometrieson spray characteristics with a spray model coupledwith nozzle cavitating flow [J]. International Journalof Automotive Technology, 2015, 16(4): 539-549.
[13]	VUJANOVI′C M, PETRANOVI′C Z, EDELBAUERW, et al. Numerical modelling of diesel spray using theEulerian multiphase approach [J]. Energy Conversionand Management, 2015, 104: 160-169.
[14]	SAZHIN S S. Advanced models of fuel droplet heatingand evaporation [J]. Progress in Energy and CombustionScience, 2006, 32(2): 162-214.
[15]	SAMIMI ABIANEH O, CHEN C P, MAHALINGAMS. Numerical modeling of multi-component fuel sprayevaporation process [J]. International Journal of Heatand Mass Transfer, 2014, 69: 44-53.

Multi-Component Model of Diesel Sprays Under High Injection Pressure

Multi-Component Model of Diesel Sprays Under High Injection Pressure

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