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http://dx.doi.org/10.3795/KSME-B.2011.35.10.1005

Cavitating Flow in Circular and Elliptical Nozzles  

Ku, Kun-Woo (Dept. of Mechanical Engineering, Kyungpook Nat'l Univ.)
Hong, Jung-Goo (Institute of Mechanical Engineering Technology, Kyungpook Nat'l Univ.)
Lee, Choong-Won (Dept. of Mechanical Engineering, Kyungpook Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.35, no.10, 2011 , pp. 1005-1012 More about this Journal
Abstract
The purpose of this study was to investigate the internal nozzle flow and cavitation characteristics numerically in both circular and elliptical nozzles. The program FLUENT 6.2 was used to perform the numerical simulation of the cavitating flow in the nozzles. A comparison was made between the cavitation shapes predicted numerically and those found experimentally in order to validate the numerical solution. This study showed that the cavitation in the circular nozzle had a cylindrical shape that was symmetrical with the nozzle axis. However, the cavitation in the elliptical nozzles had a horseshoe-like shape. In addition, the radial velocity distribution varied between the major and the minor axis planes when the working fluid was flowing into the inlet.
Keywords
Elliptical Nozzle; Cavitating Flow; Numerical Simulation;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By SCOPUS : 1
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1 Fluent Inc, 2003, Fluent User's Guide Volume 3, Fluent Inc, Lebanon, pp 22-1-22-96.
2 Birouk, M. and Lekic, N., 2009 "Liquid Jet Breakup in Quiescent Atmosphere: A review", Atomization and Sprays, Vol. 19, pp. 501-528.   DOI
3 M Potter,. C. and Wiggert, D. C., 2002, Mechanics of Fluid, BROOKS/COLE, USA, pp.106-116.
4 Park, S. H., Suh, H. K. and Lee, C. S., 2007, "Effects of Nozzle Orifice Shape and Nozzle Length-to- Diameter Ratio on Internal and External Flow Characteristics of Diesel and Biodiesel Fuel" Trans. of the KSME(B), Vol. 31, No. 3, pp. 264-272.   과학기술학회마을   DOI   ScienceOn
5 Daikoku, M., Ogasawara, S., Inamura, T. and Noro, M., 2009, "Effect of Cavitation inside Nozzle on Liquid Jet" Proc. 11th ICLASS.
6 Kärrholm, F. P., Weller, H. and Nordin, N., 2007, "Modeling Injector Flow Including Cavitation Effects for Diesel Applications" Proceedings of FEDSM2007 5th Joint ASME/JSME Fluids Engineering Conference, FEDSM2007-37518.
7 Kozubkova, M. and Rautova, J., 2009, "Cavitation Modelling of the Flow in Laval Nozzle" 3rd IAHR International Meeting of the Workgroup on Cavitation and Dynamic Problem in Hydraulic Machinery and Systems, pp. 583-592.
8 Yunyi, G., Changwen, L., Yezhou, H. and Zhijun, P., 1998, "An Experimental Study on Droplet Size Characteristics and Air Entrainment of Elliptic Sprays" SAE technical paper series, 982545.
9 Liu, D., Hong, F. and Lu, F., 2010, "The Numerical and Experimental Research on Unsteady Cloud Cavitating Flow of 3D Elliptical Hydrofoil" 9th International Conference on Hydrodynamics, Vol. 22, pp. 759-763.
10 Shi, J. and Arafin, M. S., 2010, "CFD Investigation of Fuel Property Effect on Cavitating Flow in Generic Nozzle Geometries" ILASS - Europe 2010.
11 Kim, S. R., Ku,K. W., Hong, J. G. and Lee, C. W., 2010, "Experimental Study of Discharge Coefficient and Cavitation for Different Nozzle Geometries" Trans. of the KSME(B), Vol. 34, No. 10, pp. 933-936.   과학기술학회마을   DOI   ScienceOn
12 Kim, S. R., Ku, K. W., Hong, J. G. and Lee, C. W., 2010, "An Experimental Investigation of Discharge Coefficient and Cavitation Length in the Elliptical Nozzles" ILASS - Europe 2010.
13 Sou, A., Hosokawa, S. and Tomiyama, A., 2007, "Effects of Cavitation in a Nozzle on Liquid Jet Atomization" International journal of Heat and Mass Transfer, Vol. 50, lss. 17-18, pp. 3575-3582.   DOI   ScienceOn
14 Lee, S. Y., 1996, Liquid Atomization, Minumsa, Korea, pp.165-278.
15 Lefebvre, A. H., 1989, Atomization and Spray, Hemisphere publishing corporation, USA, pp.201-307.