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Diesel nozzle geometries on spray characteristics with a spray model coupled with nozzle cavitating flow

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Abstract

Fuel spray characteristics is known to significantly affect the combustion and emission processes in diesel engines. High-pressure common-rail system can supply so high injection pressure for getting the better spray characteristics to enhance combustion efficiency and reduce emission. With the fuel injection pressure increasing, spray process becomes more and more complex which makes the study on atomization mechanism more challenging. Under the super high injection pressure, the internal turbulent flow and cavitating flow of the nozzle will greatly influence the subsequent fuel atomization process and spray characteristics, especially the cavitation has been the key to relating internal flow of nozzle and atomization behavior. So it is necessary to simulate the fuel spray process considering of internal cavitating flow of the nozzle. In this paper, firstly, the high-precision three-dimension structure of nozzle with detailed internal geometry information were obtained using synchrotron radiation x-ray phase contrast imaging technology, which was used for the mesh generation of three-dimensional numerical simulation of the cavitating flow in the nozzle. Then the spray model coupled with nozzle cavitating flow was setup in FIRE v2010 and validated by the spray experimental data got from the high-speed imaging technology on a high-pressure common-rail injection system. The spray simulations coupled with cavitating flow showed that the cavitating flow characteristics in nozzles have a large effect on both macroscopic properties and microscopic properties. Finally basing on the above verified spray model, multi-scheme simulations with various geometry parameters of nozzle were performed and the effect of nozzle geometries on the spray characteristics was analyzed and it was concluded that the nozzle sac volume, hole inlet curvature, hole inclination angle, injector needle lift and needle eccentricity had obvious effects on the nozzle flow and subsequent spray, and there was an opposite trend between the spray penetration and Sauter mean diameter, which provided a certain reference value for structure optimization of the fuel system.

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Abbreviations

A:

cross-section area of a nozzle hole, m2

C d :

discharge coefficient of a nozzle

D:

nozzle hole diameter, mm

e:

eccentric value of the needle valve, mm

F:

body force, N

h:

needle lift, mm

k:

turbulence kinetic energy, m2/s2

L:

nozzle hole length, mm

K:

cavitation parameter

n 0 :

population of bubbles per unit volume of pure liquid

p:

fluid pressure, Pa

p v :

vapor pressure, Pa

p b :

pressure within the bubble, Pa

r:

radius of the bubble, m

t:

time, s

u + :

velocity component tangential to the wall, m/s

u τ :

friction velocity constructed from the wall stress, m/s

V:

velocity vector, m/s

y + :

dimensionless distance from the wall surface

References

  • Arcoumanis, C. and Gavaises, M. (1998). Linking nozzle flow with spray characteristics in a diesel fuel injection system. Atomization and Sprays 8, 12, 307–347.

    Article  Google Scholar 

  • Arcoumanis, C., Badami, M., Flora, H. and Gavaises, M. (2000). Cavitation in real size multi-hole diesel injector nozzles. SAE Paper No. 2000-01-1249.

    Google Scholar 

  • Arcoumanis, C., Gavaises, M. and French, B. (1997). Effect of fuel injection on the structure of diesel sprays. SAE Paper No. 970799.

    Google Scholar 

  • AVL (2004). Fire v8.31 User Guide. AVL.

    Google Scholar 

  • Battistoni, M. and Grimaldi, C. N. (2012). Numerical analysis of injector flow and spray characteristics from diesel injectors using fossil and biodiesel fuels. Applied Energy 97, 54, 656–666.

    Article  Google Scholar 

  • Benajes, J., Pastor, J. V., Payri, R. and Plazas, A. H. (2004). Analysis of the influence of diesel nozzle geometry in the injection rate characteristic. J. Fluids Eng. 126, 34, 63–71.

    Article  Google Scholar 

  • Bianchi, G. M. and Pelloni, P. (1999). Modeling the diesel fuel spray breakup by using a hybrid model. SAE Paper No. 1999-01-0226.

    Google Scholar 

  • Bianchi, G. M., Pelloni, P., Corcione, F. E., Allocca, L. and Luppino, F. (2001). Modeling atomization of highpressure diesel sprays. J. Engineering for Gas Turbines and Power 123, 46, 419–427.

    Article  Google Scholar 

  • Dumont, N., Simonin, O. and Habchi, C. (2000). Cavitating flow in diesel injectors andatomisation: A bibliographical review. Liquid Atomization and Spray Systems ICLASS 2000 6, 7, 314–323.

    Google Scholar 

  • Echouchene, F., Belmabrouk, H., Le Penven, L. and Buffat, M. (2011). Numerical simulation of wall roughness effects in cavitating flow. Int. J. Heat and Fluid Flow 32, 5, 1068–1075.

    Article  Google Scholar 

  • Giannadakis, E., Gavaises, M., Roth, H. and Arcoumanis, C. (2004). Cavitating modelling insingle-hole diesel injector based on Euleriane Lagrangian approach. THIESEL 2004, Conf. Thermo and Fluid Dynamic Processes in Diesel Engines, Valencia, Spain.

    Google Scholar 

  • Habchi, C., Dumont, N. and Simonin, O. (2008). Multidimensional simulation of cavitating flows in diesel injectors by a homogeneous mixture modeling approach. Atomization Sprays 18, 5, 129–162.

    Article  Google Scholar 

  • Han, J. S., Lu, P. H., Xie, X. B., Lai, M. C. and Henein, N. A. (2002). Investigation of diesel spray break-up and development for different nozzle geometries. SAE Paper No. 2002-01-2775.

    Google Scholar 

  • He, Z., Zhong, W., Huang, Y. and Wang, Q. (2013). Effect of nozzle geometrical and dynamic factors on cavitating and turbulent flow in a diesel multi-hole injector nozzle. Int. J. Thermal Sciences 70, 28, 132–143.

    Article  Google Scholar 

  • Huh, K. Y. and Gosman, A. D. (1991). A phenomenological model of diesel spray atomization. Proc. Int. Conf. Multiphase Flows.

    Google Scholar 

  • Lee, W. G. and Reitz, R. D. (2010). A numerical investigation of transient flow and cavitation within minisac and valve-covered orifice diesel injector nozzles. J. Engineering for Gas Turbines and Power Transactions of the ASME 132, 5, 56–65.

    Article  Google Scholar 

  • Mulemane, A., Han, J. S., Lu, P. H., Yoon, S. J. and Lai, M. C. (2004). Modeling dynamic behavior of diesel fuel injection systems. SAE Paper No. 2004-01-0536.

    Google Scholar 

  • Park, S. H., Suh, H. K. and Lee, C. S. (2008). Experimental investigation on the fuel properties of biodiesel and its blends at various tempeature. Energy Fuels 22, 18, 605–613.

    Article  Google Scholar 

  • Payri, F., Margot, X., Patouna, S., Ravet, F. and Funk, M. (2009). A CFD study of effect of the needle movement on the cavtaion pattern of diesel injectors. SAE Paper No. 2009-24-0056.

    Google Scholar 

  • Payri, R., Garcia, J. M., Salvador, F. J. and Gimeno, J. (2005). Using spray momentum flux measurements to understand the influence of diesel nozzle geometry on spray characteristics. Fuel 84, 4, 551–561.

    Article  Google Scholar 

  • Qin, C., Liu, J. and Du, H. (2006). Present research and prospect of common rail injector system of Bosc. Tractor and Farm Transporter 33, 2, 27–34.

    Google Scholar 

  • Schmidt, D. P., Rutland, C. J. and Corradini, M. L. (1997). A numerical study of cavitating flow through various nozzle shapes. SAE Paper No. 971597.

    Google Scholar 

  • Singhal, A. K., Athavale, M. M., Li, H. and Jiangs, Y. (2002). Mathematical basis and the full cavitation model. J. Fluids Engineering 124, 89, 617–624.

    Article  Google Scholar 

  • Som, S., Aggarwal, S. K., El-Hannouny, E. M. and Longman, D. E. (2010). Investigation of nozzle flow and cavitation characteristics in a diesel injector. J. Eng. Gas. Turbine Power 132, 19, 1–12.

    Google Scholar 

  • Vijayakumar, T., Thundil, K. R. R. and Nanthagopal, K. (2011). Effect of the injection pressure on the internalflow characteristics for diethyl and dimethyl ether and diesel fuel injectors. Thermal Science 15, 4, 1123–1130.

    Article  Google Scholar 

  • Vortmann, C., Schnerr, G. H. and Seelecke, S. (2003). Thermodynamic modeling and simulation of cavitating nozzle flow. Int. J. Heat and Fluid Flow 24, 16, 774–783.

    Article  Google Scholar 

  • Wang, Y. and Wang, J. (2008). Ultratast X-ray study of dense-liguid-jet flow dynamics usiing structure-tracking velocimetry. Nature Physics 4, 4, 305–309.

    Article  Google Scholar 

  • Yuan, W. and Schenerr, G. H. (2003). Numerical simulation of two-phase flow in injection nozzles: Interaction of cavitation and external jet formation. J. Fluids Engineering 125, 18, 963–969.

    Article  Google Scholar 

  • Zhilong, L., Zhijue, W., Tiqiao, X. and Yanan, F. (2011). Measurement of the internal geometry of injector nozzle basing on synchrotron radiation x-ray phase contrast imaging technology. J. Norman Bethune University of Engineering Science 1, 41, 1–10.

    Google Scholar 

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Authors and Affiliations

  1. School of Energy and Power Engineering, Jiangsu University, Zhenjiang, 212013, China

    F. Wang, Z. He, J. Liu & Q. Wang

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  1. F. Wang
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  2. Z. He
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  3. J. Liu
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  4. Q. Wang
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Correspondence to F. Wang.

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Wang, F., He, Z., Liu, J. et al. Diesel nozzle geometries on spray characteristics with a spray model coupled with nozzle cavitating flow. Int.J Automot. Technol. 16, 539–549 (2015). https://doi.org/10.1007/s12239-015-0055-9

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  • DOI: https://doi.org/10.1007/s12239-015-0055-9

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