Browse > Article
http://dx.doi.org/10.3744/JNAOE.2012.4.2.123

Experimental investigation of supercavitating flows  

Ahn, Byoung-Kwon (Department of Naval Architecture and Ocean Engineering, College of Engineering, Chungnam National University)
Lee, Tae-Kwon (Department of Naval Architecture and Ocean Engineering, College of Engineering, Chungnam National University)
Kim, Hyoung-Tae (Department of Naval Architecture and Ocean Engineering, College of Engineering, Chungnam National University)
Lee, Chang-Sup (Department of Naval Architecture and Ocean Engineering, College of Engineering, Chungnam National University)
Publication Information
International Journal of Naval Architecture and Ocean Engineering / v.4, no.2, 2012 , pp. 123-131 More about this Journal
Abstract
When the object is traveling in the water at tremendously high speeds, the cavity forms and grows up at a fore part of the object called cavitator, and the object is eventually enveloped by vaporized water, supercavitation. As a result, the only part of the object in direct contact with the water is the cavitator, so skin-friction drag is significantly reduced. This is why recently supercavitating objects have been interested in many applicable fields. In this study we are focused out attention on supercavitating flows around various shapes of two and three dimensional cavitators. First, general features of supercavitation are examined by analyzing results obtained by the previously developed numerical method. Second, experimental observations are carried out at a cavitation tunnel at the Chungnam National University (CNU CT), and supercavity dimensions are scrutinized.
Keywords
Cavitator; Cavitation; Super-cavitation; Cavitation tunnel; Supercavity length; Supercavity width;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 0  (Related Records In Web of Science)
연도 인용수 순위
1 Waid, R.L., 1957. Water tunnel investigation of two-dimensional cavities. CalTech. Hydrodyn. Lab. Rep. E-73.4.
2 Ahn, B.-K., Lee, C.-S. and Kim, H.-T., 2010. Experimental and numerical studies on super-cavitating flow of axisymmetric cavitator. International Journal of Naval Architecture and Ocean Engineering, 2(1), pp.39-44.   DOI   ScienceOn
3 Alyanak, E., Venkayya, V., Grandhi, R. and Penmetsa, R., 2004. Variable shape cavitator design for a supercavitating torpedo. Proc. of 10th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference. Albany, NY, USA.
4 Gilbarg, D., 1957. Free stream theory and steady-state cavitation. Proc. Symposium On Naval Hydrodynamics. Washington, D.C., pp. 281-295.
5 Knapp, R.T., Daily, J.W. and Hammitt, F.G., 1979. Cavitation, McGraw-Hill.
6 Kunz, R.F., Lindau, J.W., Billet, M.L. and Stinegring, D.R., 2001. Multiphase computational fluid dynamics modeling of developed and supercavitating flows. Von Karman Institute for Fluid Dynamics, Rhode Saint Genese, Belgium.
7 Newman, J.N., 1977. Marine Hydrodynamics. Cambridge, MA, USA : The MIT Press.
8 Reichardt, H., 1946. The laws of cavitation bubbles at axially symmetric bodies in a flow. Ministry of Aircraft Production (Britain), Rep. and Transl. 766.
9 Saurel, R. and Le Metayer, O., 2001. A multiphase model for compressible flows with interfaces, shocks, detonation waves and cavitation. Journal of Fluid Mechanics, 431, pp.239-271.   DOI   ScienceOn
10 Self, M. and Ripken, J.F., 1955. Steady-state cavity studies in a free-jet water tunnel. St. Anthony Falls Hydr. Lab. Rep. 47.
11 Semenenko, V.N., 2001. Artificial Supercavitation, Physics and Calculation, Lecture Notes for the RTO AVT/VKI Special Course on Supercavitating Flows. Von Karman Institute for Fluid Dynamics, Rhode Saint Genese, Belgium.
12 Tulin, M.P., 1953. Steady two-dimensional cavity flows about slender bodies. DTMB Rep. 834.