Instability and breakup of cavitation bubbles within diesel drops

doi:10.1016/j.cjche.2014.10.009

Chinese Journal of Chemical Engineering ›› 2015, Vol. 23 ›› Issue (1): 262-267.DOI: 10.1016/j.cjche.2014.10.009

• 能源、资源与环境技术 • 上一篇下一篇

Instability and breakup of cavitation bubbles within diesel drops

Ming Lü, Zhi Ning, Kai Yan, Juan Fu, Chunhua Sun

College of Mechanical and Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China

收稿日期:2013-04-18 修回日期:2013-09-15 出版日期:2015-01-28 发布日期:2015-01-24
通讯作者: Zhi Ning
基金资助:
Supported by the National Natural Science Foundation of China (51276011), the National High Technology Research and Development Program of China (2013AA065303), Beijing Municipal Natural Science Foundation of China (3132016), and the Opening Foundation of State Key Laboratory of Engines (K2013-3).

Instability and breakup of cavitation bubbles within diesel drops

Ming Lü, Zhi Ning, Kai Yan, Juan Fu, Chunhua Sun

College of Mechanical and Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China

Received:2013-04-18 Revised:2013-09-15 Online:2015-01-28 Published:2015-01-24
Contact: Zhi Ning
Supported by:
Supported by the National Natural Science Foundation of China (51276011), the National High Technology Research and Development Program of China (2013AA065303), Beijing Municipal Natural Science Foundation of China (3132016), and the Opening Foundation of State Key Laboratory of Engines (K2013-3).

摘要/Abstract

摘要： Amodified mathematical model is used to study the effects of various forces on the stability of cavitation bubbles within a diesel droplet. The principal finding of the work is that viscous forces of fluids stabilize the cavitation bubble, while inertial force destabilizes the cavitation bubble. The droplet viscosity plays a dominant role on the stability of cavitation bubbles comparedwith that of air and bubble. Bubble-droplet radius ratio is a key factor to control the bubble stability, especially in the high radius ratio range. Internal hydrodynamic and surface tension forces are found to stabilize the cavitation bubble, while bubble stability has little relationship with the external hydrodynamic force. Inertia makes bubble breakup easily, however, the breakup time is only slightly changed when bubble growth speed reaches a certain value (50 m·s^-1). In contrast, viscous force makes bubble hard to break. With the increasing initial bubble-droplet radius ratio, the bubble growth rate increases, the bubble breakup radius decreases, and the bubble breakup time becomes shorter.

关键词: Stability, Diesel droplet, Cavitation bubble, Secondary breakup

Abstract: Amodified mathematical model is used to study the effects of various forces on the stability of cavitation bubbles within a diesel droplet. The principal finding of the work is that viscous forces of fluids stabilize the cavitation bubble, while inertial force destabilizes the cavitation bubble. The droplet viscosity plays a dominant role on the stability of cavitation bubbles comparedwith that of air and bubble. Bubble-droplet radius ratio is a key factor to control the bubble stability, especially in the high radius ratio range. Internal hydrodynamic and surface tension forces are found to stabilize the cavitation bubble, while bubble stability has little relationship with the external hydrodynamic force. Inertia makes bubble breakup easily, however, the breakup time is only slightly changed when bubble growth speed reaches a certain value (50 m·s^-1). In contrast, viscous force makes bubble hard to break. With the increasing initial bubble-droplet radius ratio, the bubble growth rate increases, the bubble breakup radius decreases, and the bubble breakup time becomes shorter.

Key words: Stability, Diesel droplet, Cavitation bubble, Secondary breakup

Ming Lü, Zhi Ning, Kai Yan, Juan Fu, Chunhua Sun. Instability and breakup of cavitation bubbles within diesel drops[J]. Chinese Journal of Chemical Engineering, 2015, 23(1): 262-267.

Ming Lü, Zhi Ning, Kai Yan, Juan Fu, Chunhua Sun. Instability and breakup of cavitation bubbles within diesel drops[J]. Chin.J.Chem.Eng., 2015, 23(1): 262-267.

参考文献

[1] W.G. Zhao, L.X. Zhang, X.M. Shao, Numerical simulation of cavitation flow under high pressure and temperature, J. Hydrodyn. 23 (3) (2011) 289-294.

[2] R. Payri, J.M. Garcia, F.J. Salvador, Using spray momentum flux measurements to understand the influence of diesel nozzle geometry on spray characteristics, Fuel 84 (5) (2005) 551-561.

[3] S. Shi, G. Wang, Numerical calculation of thermal effect on cavitation in cryogenic fluids, Chin. J. Mech. Eng. 25 (6) (2012) 1176-1183 (in Chinese).

[4] H. Sun, B.F. Bai, J.J. YAN, et al., Single-jet spray mixing with a confined crossflow, Chin. J. Chem. Eng. 21 (1) (2013) 14-24.

[5] C.V.K. Sarre, S.C. Kong, R.D. Reitz, Modeling the effects of injector nozzle geometry on diesel sprays, SAE Paper, 1999, pp. 1375-1388.

[6] Z.X. He, W.J. Zhong, Q. Wang, An investigation of transient nature of the cavitating flow in injector nozzles, Appl. Therm. Eng. 54 (1) (2013) 56-64.

[7] A. Sou, S. Hosokawa, A. Tomiyawa, Effects of cavitation in a nozzle on liquid jet atomization, Int. J. Heat Mass Transfer 50 (17-18) (2007) 3575-3582.

[8] M.G. Giorgi, A. Ficarella, M. Tarantino, Evaluating cavitation regimes in an internal orifice at different temperatures using frequency analysis and visualization, Int. J. Heat Fluid Flow 39 (2013) 160-172.

[9] M. Blessing, G. Konig, C. Kruger, Analysis of flow and cavitation phenomena in diesel injection nozzles and its effects on spray and mixture formation, SAE Paper, 2003, pp. 01-1358.

[10] N. Tamaki, Effects of cavitation in a nozzle hole on atomization of spray and development of high-efficiency atomization enhancement nozzle, Proceedings the 11th International Conference on Liquid Atomization and Spray Systems, paper 083, Vail, America, 2009.

[11] S.D. Safari, Effects of Cavitation on High-pressure Atomization(Ph.D. Thesis) California Univ., California, 2009.

[12] R. Payri, F.J. Salvador, J. Gimeno, Study of cavitation phenomena based on a technique for visualizing bubbles in a liquid pressurized chamber, Int. J. Heat Fluid Flow 30 (4) (2009) 768-777.

[13] J.M. Desantes, R. Payri, F.J. Salvador, Influence of cavitation phenomenon on primary break-up and spray behavior at stationary conditions, Fuel 89 (10) (2010) 3033-3041.

[14] S. Som, A.I. Ramirez, D.E. Longman, Effect of nozzle orifice geometry on spray, combustion, and emission characteristics under diesel engine conditions, Fuel 90 (3) (2011) 1267-1276.

[15] W. Yuan, G.H. Schnerr, Numerical simulation of two-phase flow in injection nozzles: interaction of cavitation and external jet formation, J. Fluids Eng. 125 (2003) 963-969.

[16] H.K. Suh, C.S. Lee, Effect of cavitation in nozzle orifice on the diesel fuel atomization characteristics, Int. J. Heat Fluid Flow 29 (2008) 1001-1009.

[17] L. Hadji, W. Schreiber, The stability of an inviscid liquid sheet containing vapor bubbles, J. Phys. Nat. Sci. 1 (2) (2007) 1-11.

[18] Y.B. Zeng, C.F. Lee, An atomization model for flash boiling sprays, Combust. Sci. Technol. 169 (1) (2001) 45-67.

[19] M. Lv, Z. Ning, K. Yan, The instability of vapor bubble growth within the diesel droplet under the condition of supercavitation, Adv. Mater. Res. 512-515 (2012) 477-480.

[20] A. Mulemane, S. Subramaniyam, P.H. Lu, Comparing cavitation in diesel injectors based on different modeling approaches, SAE Paper, 2004, pp. 01-0027.

[21] M. Jia, D. Hou, J. Li, A micro-variable circular orifice fuel injector for HCCIconventional engine combustion—part I numerical simulation of cavitation, SAE Paper, 2007, pp. 01-0249.

[22] X. Wang, W.H. Su, A numerical study of cavitating flows in high-pressure diesel injection nozzle holes using a two-fluid model, Chin. Sci. Bull. 54 (10) (2009) 1655-1662.

[23] C.J. Liu, B. Liang, S.W. Tang, et al., Effects of orifice orientation and gas-liquid flow pattern on initial bubble size, Chin. J. Chem. Eng. 21 (11) (2013) 1206-1215.

Instability and breakup of cavitation bubbles within diesel drops

Instability and breakup of cavitation bubbles within diesel drops

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	Peipei Ai, Huiqing Jin, Jie Li, Xiaodong Wang, Wei Huang. Ultra-stable Cu-based catalyst for dimethyl oxalate hydrogenation to ethylene glycol[J]. 中国化学工程学报, 2023, 60(8): 186-193.
[2]	Bingxiao Feng, Lining Hao, Chaoting Deng, Jiaqiang Wang, Hongbing Song, Meng Xiao, Tingting Huang, Quanhong Zhu, Hengjun Gai. A highly hydrothermal stable copper-based catalyst for catalytic wet air oxidation of m-cresol in coal chemical wastewater[J]. 中国化学工程学报, 2023, 57(5): 338-348.
[3]	Xia Xiong, Zuohua Liu, Changyuan Tao, Yundong Wang, Fangqin Cheng, Hong Li. Reduced power consumption in stirred vessel with high solid loading by equipping punched baffles[J]. 中国化学工程学报, 2023, 56(4): 203-214.
[4]	Tinghao Jia, Yunbo Yu, Qing Liu, Yao Yang, Ji-Jun Zou, Xiangwen Zhang, Lun Pan. Theoretical and experimental study on the inhibition of jet fuel oxidation by diarylamine[J]. 中国化学工程学报, 2023, 56(4): 225-232.
[5]	Zida Ma, Yuxia Li, Mengmeng Jin, Xiaoqin Liu, Linbing Sun. Fabrication of adsorbents with enhanced Cu^I stability: Creating a superhydrophobic microenvironment through grafting octadecylamine[J]. 中国化学工程学报, 2023, 55(3): 41-48.
[6]	Dahai Jiang, Zhidi Min, Jing Leng, Huanqing Niu, Yong Chen, Dong Liu, Chenjie Zhu, Ming Li, Wei Zhuang, Hanjie Ying. Characterization of two halophilic adenylate cyclases from Thermobifida halotolerans and Haloactinopolyspora alba[J]. 中国化学工程学报, 2023, 53(1): 56-62.
[7]	Pascal Habimana, Yanjun Jiang, Jing Gao, Jean Bernard Ndayambaje, Osama M. Darwesh, Jean Pierre Mwizerwa, Xiaobing Zheng, Li Ma. Enhancing laccase stability and activity for dyes decolorization using ZIF-8@MWCNT nanocomposite[J]. 中国化学工程学报, 2022, 48(8): 66-75.
[8]	Chunyu Zhang, Yan Sun, Xiaoyan Dong. Conjugation of a zwitterionic polymer with dimethyl chains to lipase significantly increases the enzyme activity and stability[J]. 中国化学工程学报, 2022, 47(7): 48-53.
[9]	Fu Yang, Wenhao Li, Rui Ou, Yutong Lu, Xuexue Dong, Wenlong Tu, Wenjian Zhu, Xuyu Wang, Lulu Li, Aihua Yuan, Jianming Pan. Superb VOCs capture engineering carbon adsorbent derived from shaddock peel owning uncompromising thermal-stability and adsorption property[J]. 中国化学工程学报, 2022, 47(7): 120-133.
[10]	Shiqi Yang, Zhentao Wang, Qian Kong, Bin Li, Junfeng Wang. Visualization on electrified micro-jet instability from Taylor cone in electrohydrodynamic atomization[J]. 中国化学工程学报, 2022, 44(4): 456-465.
[11]	Qingxia Xiong, Ying Ren, Yufei Xia, Guanghui Ma, Reiji Noda, Wei Ge. Molecular dynamics simulations of ovalbumin adsorption at squalene/water interface[J]. 中国化学工程学报, 2022, 50(10): 369-378.
[12]	Saboura Ashkevarian, Jalil Badraghi, Fatemeh Mamashli, Behdad Delavari, Ali Akbar Saboury. Covalent immobilization and characterization of Rhizopus oryzae lipase on core-shell cobalt ferrite nanoparticles for biodiesel production[J]. 中国化学工程学报, 2021, 37(9): 128-136.
[13]	Huawei Zhu, Haifeng Yu, Zhaofeng Yang, Hao Jiang, Chunzhong Li. Tungsten and phosphate polyanion co-doping of Ni-ultrahigh cathodes greatly enhancing crystal structure and interface stability[J]. 中国化学工程学报, 2021, 37(9): 144-151.
[14]	Chen Xu, Zhenyi Du, Shiqi Yang, Hongda Ma, Jie Feng. Effects of inherent potassium on the catalytic performance of Ni/biochar for steam reforming of toluene as a tar model compound[J]. 中国化学工程学报, 2021, 35(7): 189-195.
[15]	Shiya He, Zhimin You, Xin Jin, Yi Wu, Cheng Chen, He Zhao, Jian Shen. Continuous generation of lattice oxygen via redox engineering for boosting toluene degradation performances[J]. 中国化学工程学报, 2021, 34(6): 258-266.