중력 효과를 받는 인공 초공동에 대한 수치해석|RISS 상세보기

다국어 초록 (Multilingual Abstract)

Supercavitation can be generated at relatively lower speeds by injecting compressed air behind the cavitator. As a result, an artificially created supercavity is deformed and its tail tends to rise due to gravitational effects. However, practical prediction of the artificial supercavity currently depends on empirical results. In this study, a mathematical model for the artificial supercavity under the gravity effect is proposed. Based on a boundary element method, geometric characteristics of the supercavity at different flow conditions are examined. The results were compared with an existing empirical formula and also experimental observations carried out at a cavitation tunnel of the Chungnam National University.

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참고문헌 (Reference)

1 R. L. Waid, "Water Tunnel Investigation of Two-Dimensional Cavities" 1957

2 Yu. N. Savchenko, "Unstady Supercavitated Motion of Bodies" 109 (109): 2000-,

3 M. Self, "Steady-State Cavity Studies in a Free-Jet Water Tunnel" 1955

4 M. S. Jin, "Numerical Analysis of Ventilated Cavitation with Free Surface Effects" 13 (13): 2013-,

5 B. K. Ahn, "Numerical Analysis of Supercavitating Flows Based on Viscous/Inviscid Method" 25 (25): 2014-,

6 Yu. N. Savchenko, "Investigation of High-Speed Supercavitating Underwater Motion of Bodies" 1998

7 G. V. Logvinovich, "Hydrodynamics of Free-Boundary Flows" 1972

8 B. K. Ahn, "Experimental Study on Artificial Supercavitation of the High Speed Torpedo" 300 (300): 2015-,

9 E. Silberman, "Experimental Studies of Super-Cavitating Flow about Simple Two-Dimensional Bodies in a Jet" 337 (337): 1959-,

10 S. Park, "Computational Analysis of Turbulent Super-Cavitating Flow Around a Two-Dimensional Wedge-Shaped Cavitator Geometry" 73 (73): 2012-,