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http://dx.doi.org/10.5139/JKSAS.2016.44.7.593

Numerical Study on the Atomization Process of a Supersonic Gas-Metallic Liquid Atomizer  

Hwang, Won-Sub (Department of Aerospace Engineering, Pusan National University)
Kim, Kui-Soon (Department of Aerospace Engineering, Pusan National University)
Choi, Jeong-Yeol (Department of Aerospace Engineering, Pusan National University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.44, no.7, 2016 , pp. 593-602 More about this Journal
Abstract
Numerical simulations on the close-coupled supersonic gas atomizer for metallic powder production were performed in this study. A proper turbulence model was chosen and then VOF(Volume of Fluid) and DPM(Discrete Phase Model) methods were sequentially applied for the simulations of primary and secondary break-up processes of liquid metal. Diameters of parent droplets were calculated by analyzing Level-Set function contour from the VOF result. Finally, the distribution of particle diameter was obtained from the DPM result at exit of the computational domain.
Keywords
Supersonic gas atomizer; Volume of Fluid(VOF); Discrete Phase Model(DPM); Particle diameter distribution;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 Jeon, H. S., Liquid Atomization, Munundang, Jongno, Seoul, 2009, pp. 466-467.
2 German, R. M., Powder Metallurgy & Particulate Materials Processing, Metal Powder Industries Federation, New Jersey, USA, 2005, pp. 70-71.
3 Bayvel, L. and Orzechowski, Z., Liquid Atomization, Taylor & Francis, Washington, DC, USA, 1993, p. 11.
4 Dombrowski, N. and Fraser, R. P., "A Photographic Investigation into the Disintegration of Liquid Sheets", Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, Vol. 247, No. 924, 1954, pp. 101-130.   DOI
5 Ting, J. and Anderson, I. E., "A Computational Fluid Dynamics (CFD) Investigation of the Wake Closure Phenomenon", Materials Science and Engineering, Vol. 379, No. 1-2, 2004, pp. 264-276.   DOI
6 Zhao, W., Cao, F., Ning, Z., Zhang, G., Li, Z. and Sun, J., "A Computational Fluid Dynamics (CFD) Investigation of the Flow Field and the Primary Atomization of the Close Coupled Atomizer", Computers and Chemical Engineering, Vol. 40, 2012, pp. 58-66.   DOI
7 Zeoli, N. and Gu. S., "Numerical Modelling of Droplet Break-up for Gas Atomisation", Computational Materials Science, Vol. 38, 2006, pp. 282-292.   DOI
8 Markus, S. and Fritsching, U., "Discrete Break-up Modeling of Melt Sprays", International Journal of Power Metallurgy, Vol.42, No. 4, 2006, pp. 23-32.
9 Firmansyah, D. A., Kaiser, R., Zahaf, R., Coker, Z., Choi, T. Y. and Lee, D. G., "Numerical Simulations of Supersonic Gas Atomization of Liquid Metal Droplets", Japanese Journal of Applied Physics, Vol. 53, No. 5, 2014, pp. 05HA09-1-05HA09-7.   DOI
10 Mates, S. P. and Settles, G. S., "A Study of Liquid Metal Atomization Using Close-Coupled Nozzles, Part 1: Gas Dynamic Behavior", Atomization and Sprays, Vol. 15, No. 1, 2005, pp. 19-40.   DOI
11 Smithells, C. J. and Brandes, E. A., Metals Reference Book, 6th ed., Butterworth, London, 1983, p. 14-7.
12 Chase, M. W., NIST-JANAF Thermochemical Tables Part II Cr-Zr, ACS AND AIP for NIST, American Chemical Society, Washington, D.C., USA, American Institute of Physics for the National Institute of Standards and Technology, Woodbury, N.Y., USA, 4th ed., 1998, pp. 1697-1700.
13 Herrin, J. L. and Dutton, J. C., "Supersonic Base Flow Experiments in the Near Wake of a Cylindrical Afterbody", AIAA Journal, Vol. 32, No. 1, 1994, pp. 77-83.   DOI
14 Nishi, T., Shibata, H., Ohta, H. and Waseda, Y., "Thermal Conductivities of Molten Iron, Cobalt, and Nickel by Laser Flash Method", Metallurgical and Materials Transactions. B, Process Metallurgy and Materials Processing Science, Vol. 34, No. 12, 2003, pp. 2801-2808.   DOI
15 Lida, T. and Guthrie, R. L., The Physical Properties of Liquid Metals, Oxford, U.K, Clarendon Press, 1988, p. 183.
16 Xiao, F., Fang, L. and Nogi, K., "Surface Tension of Molten Ni and Ni-Co Alloys", Journal of Materials Science & Technology, Vol. 21, No. 2, 2005, pp. 201-206.
17 Shin, J. R., Moon, S. Y., Won, S. H. and Choi, J. Y., "Detached Eddy Simulation of Base Flow in Supersonic Mainstream", The Korean Society for Aeronautical & Sciences, Vol. 37, No. 10, 2009, pp. 955-966.   DOI
18 Shin, J. R. and Choi, J. Y., "Dynamic Correction of DES Model Constant for the Advanced Prediction of Supersonic Base Flow", The Korean Society for Aeronautical & Sciences, Vol. 38, No. 2, 2010, pp. 99-110.   DOI
19 Dombrowski, N. and Johns, W. R., "The Aerodynamic Instability and Disintegration of Viscous Liquid Sheets", Chemical Engineering Science, Pergamon Press Ltd., Oxford, Great Britain, Vol. 18, 1963, pp. 203-214.   DOI