받음각을 갖는 초공동 수중 운동체에서 발생하는 초월공동과 유체력 특성에 대한 수치적 연구
A Numerical Study on the Characteristics of the Supercavitation and Hydrodynamic Forces Generated in a Supercavitating Underwater Vehicle with Angle of Attack
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Recently, as the technology of the supercavitating underwater vehicle is improved, the necessity of research for maneuvering characteristics of the supercavitating underwater vehicle has emerged. In this study, as a preliminary step to analyzing the maneuverability of a supercavitating underwater vehicle, the characteristics of cavity shapes and hydrodynamic forces generated in a supercavitating underwater vehicle with an angle of attack were evaluated numerically. First, the geometry was designed by modifying the shape of the existing supercavitating underwater vehicle. The continuity and the Navier-stokes equations are numerically solved, and turbulent eddy viscosity is solved by the k-ωSST model. The results present the characteristics of cavity shape and the hydrodynamic forces of the designed geometry with an angle of attack.
Abstract
Recently, as the technology of the supercavitating underwater vehicle is improved, the necessity of research for maneuvering characteristics of the supercavitating underwater vehicle has emerged. In this study, as a preliminary step to analyzing the maneuverability of a supercavitating underwater vehicle, the characteristics of cavity shapes and hydrodynamic forces generated in a supercavitating underwater vehicle with an angle of attack were evaluated numerically. First, the geometry was designed by modifying the shape of the existing supercavitating underwater vehicle. The continuity and the Navier-stokes equations are numerically solved, and turbulent eddy viscosity is solved by the k-ωSST model. The results present the characteristics of cavity shape and the hydrodynamic forces of the designed geometry with an angle of attack.
참고문헌 (15)
- 안병권, "Experimental and numerical studies on super-cavitating flow of axisymmetric cavitators", International Journal of Naval Architecture and Ocean Engineering, 2(1), pp.39~44 (2010), 대한조선학회
- Garabedian, P. R, "Calculation of axially symmetric cavities and jets", Pacific Journal of Mathematics, 6(4), pp.611~684 (1956)
- Gary, J. B, "Control of high-speed underwater vehicle", Control of Uncertain Systems:Modeling, Approximation, and Design, 329, pp.26~44 (2006)
- Guzevsky, L.G, "Approxiamtion dependences for axisymmetric cavities behind cones, Hydrodynamic Flows and Wave Processes", pp.82~91 (1983), Institute of Thermal Physics, Sib. Branch, The Academy of Sciences of the USSR
- 정소원, "초월공동 수중운동체용 제어핀의 유체력 특성에 대한 실험연구", 대한조선학회 논문집, 55(1), pp.75~82 (2018), 대한조선학회[DOI]
- 김형태, "제어핀이 달린 수중 물체의 공동 수치해석", 대한조선학회 논문집, 56(4), pp.298~307 (2019), 대한조선학회[DOI]
- 김지혜, "축대칭 캐비테이터에서 발생하는 자연 초월공동과 항력 특성에 대한 연구", 대한조선학회 논문집, 53(6), pp.465~472 (2016), 대한조선학회
- Kinzel, M. P, "A numerical assessment of the interaction of a supercavitating flow with a gas jet", Ocean Engineering, 136, pp.304~313 (2017)
- Logvinovich, G. V., "Hydrodynamics of flows with free boundaries" (1973), Halsted Press
- 박현지, "축대칭 수중 운동체의 형상 변화를 고려한 초월공동 수치해석", 대한조선학회 논문집, 55(6), pp.482~489 (2018), 대한조선학회[DOI]
- Schnerr, G, "Physical and numerical modeling of unsteady cavitation dynamics", 4th International Conference on Multiphase Flow (2001)
- Tulin, M, "Stedy two-dimensinal cavity flows about slender bodies" (1953), Navy dept
- Water tunnel investigation of twodimensional cavities, CalTech, "Waid, R.L", ~, pp.Laboratory Report No E-73.4 (1957)
- A free streamline theory for two-dimensional fully cavitated hydrofoils, "Wu, T.Y", Calif inst of Tech Hydrodyn, ~, pp.Lab Report No 21-17 (1955)
- Xulong, Y, "Hydrodynamic characteristics of a supercavitating vehicles’s aft body", Journal of Ocean Engineering, 114, pp.37~46 (2016)