분사형 초공동 수중운동체의 Planing 회피에 대한 연구
Studies on Planing Avoidance Control for a Ventilated Supercavitating Vehicle
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초록
Supercavitation is a technology that reduces frictional resistance of an underwater vehicle by surrounding it with bubbles. Supercavity is divided into natural supercavity and ventilated supercavity which is formed by artificially supplying gas. Planing forces are present when a section of the underwater vehicle goes outside of the cavitation region in the supercavity condition. Planing often leads to an unstable flight because it acts vertically on the body suddenly. In this paper, a relationship between the ventilation rate and the cavitation number is determined. Based on the relationship, desired cavitation number which can avoid to planing is determined and then ventilation controller is designed. The performance of the ventilation controller is verified with a depth change controller using the cavitator. Simulation results show that the ventilation controller can minimize the planing force and moment.
Abstract
Supercavitation is a technology that reduces frictional resistance of an underwater vehicle by surrounding it with bubbles. Supercavity is divided into natural supercavity and ventilated supercavity which is formed by artificially supplying gas. Planing forces are present when a section of the underwater vehicle goes outside of the cavitation region in the supercavity condition. Planing often leads to an unstable flight because it acts vertically on the body suddenly. In this paper, a relationship between the ventilation rate and the cavitation number is determined. Based on the relationship, desired cavitation number which can avoid to planing is determined and then ventilation controller is designed. The performance of the ventilation controller is verified with a depth change controller using the cavitator. Simulation results show that the ventilation controller can minimize the planing force and moment.
참고문헌 (19)
- 안병권, "Experimental investigation of supercavitating flows", International Journal of Naval Architecture and Ocean Engineering, 4(2), pp.123~131 (2012), 대한조선학회[DOI]
- Garabedian, P., "Calculation of Axially Symmetric Cavities and Jets", Pacific Journal of Mathematics, 6(4), pp.611~684 (1956)
- Karlikov, V. P., "Method of Approximate Account for the Wall Effect in Cavitation Flow Around Bodies in Water Tunnels", Fluid Dynamics, 1(4), pp.61~64 (1966)
- Kawakami, E., "Investigation of the Behavior of Ventilated Supercavities", Journal of Fluids Engineering, 133(9), pp.091305~ (2011)
- 김병진, "원판 캐비테이터의 환기 초공동에 대한 실험적 연구", 대한조선학회 논문집, 52(3), pp.236~247 (2015), 대한조선학회
- 김형태, "2차원 초공동 유동의 중력과 자유표면 효과에 대한 수치해석", 대한조선학회 논문집, 51(5), pp.435~449 (2014), 대한조선학회
- 김지혜, "3차원 축대칭 캐비테이터의 초월공동유동 수치해석", 대한조선학회 논문집, 50(3), pp.160~166 (2013), 대한조선학회
- 김선홍, "Integrated dynamics modeling for supercavitating vehicle systems", International Journal of Naval Architecture and Ocean Engineering, 7(2), pp.346~363 (2015), 대한조선학회
- 김선홍, "분사형 초공동 수중운동체의 가스 분사량 제어 연구", 대한조선학회 논문집, 52(3), pp.206~221 (2015), 대한조선학회
- 이현배, "2차원 단순 물체의 초공동 유동에 대한 수치해석", 대한조선학회 논문집, 50(6), pp.436~449 (2013), 대한조선학회
- Hydrodynamics of free-boundary flows, Translated from Russian (NASA-TT-F-658), "Logvinovich, G. V.", US Department of Commerce, ~ (1972)
- Logvinovich, G. V., "On methods of calculating a shape of slender axisymmetric cavities", Gidromehanika, 32, pp.47~54 (1975)
- Logvinovich, G. V., "Some problems in planing surfaces", Trudy TsAGI, 2052, pp.3~12 (1980)
- Investigation of high-speed supercavitating underwater motion of bodies, "Savchenko, Y. N.", NASA, ~ (1998)
- Semenenko, V. N., "Artificial supercavitation. physics and calculation" (2001), UKRAINIAN ACADEMY OF SCIENCES KIEV INST OF HYDROMECHANICS
- Shao, Y., "Planing, switching and supercavitating flight control", AIAA Guidance, Navigation and Control Conference, AIAA-2003-5724 (2003)
- Vanek, B., "Control methods for high-speed supercavitating vehicles", Doctor, pp.2008
- Vasin, A. D., "Immersion of a Cylinder in a Fluid through a Cylindrical Free Surface", Fluid Dynamics, 36(2), pp.169~177 (2001)
- Zou, W., "On the Shedding of the Ventilated Supercavity with Velocity Disturbance", Ocean Engineering, 57, pp.223~229 (2013)