Performance analysis of a horn-type rudder implementing the Coanda effect
1
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
The Coanda effect is the phenomenon of a fluid jet to stay attached to a curved surface; when a jet stream is applied tangentially to a convex surface, lift force is generated by increase in the circulation. The Coanda effect has great potential to be applied practically applied to marine hydrodynamics where various lifting surfaces are being widely used to control the behavior of ships and offshore structures. In the present study, Numerical simulations and corresponding experiments were performed to ascertain the applicability of the Coanda effect to a horn-type rudder. It was found that the Coanda jet increases the lift coefficient of the rudder by as much as 52% at a jet momentum coefficient of 0.1 and rudder angle of 10.
Abstract
The Coanda effect is the phenomenon of a fluid jet to stay attached to a curved surface; when a jet stream is applied tangentially to a convex surface, lift force is generated by increase in the circulation. The Coanda effect has great potential to be applied practically applied to marine hydrodynamics where various lifting surfaces are being widely used to control the behavior of ships and offshore structures. In the present study, Numerical simulations and corresponding experiments were performed to ascertain the applicability of the Coanda effect to a horn-type rudder. It was found that the Coanda jet increases the lift coefficient of the rudder by as much as 52% at a jet momentum coefficient of 0.1 and rudder angle of 10.
참고문헌 (22)
- Ahn, H. S., "Experimental study on the effects of water jetting on a flapped rudder", J. Soc. Nav. Archit. Korea, 36(1), pp.22~29 (1999)
- 안해성, "콴다효과를 응용한 플랩이 달린 고양력 날개장치에 대한 실험적 연구", 대한조선학회 논문집, 40(5), pp.2~16 (2003), 대한조선학회
- A NaviereStokes investigation of a circulation control airfoil, "Berman, H. A.", ~, pp.AIAA 85-300 (1985)
- Chau, S. W., "Investigation of hydrodynamic performance of high-speed craft rudders via turbulent flow computations, part I: non-cavitating characteristics", J. Mar. Sci. Technol, 13(1), pp.64~72 (2005)
- Choi, B. J., "An experimental evaluation of the Coanda jet applied high efficient rudder system for VLCC", J. Ship Ocean Technol, 8(2), pp.1~12 (2004)
- Hasegawa, K., "Study on the maneuverability of a large vessel installed with a mariner type Super VecTwin rudder", J. Mar. Sci. Technol, 11(2), pp.88~99 (2006)
- Jae Hwan Jung, "Endplate effect on aerodynamic characteristics of three-dimensional wings in close free surface proximity", International Journal of Naval Architecture and Ocean Engineering, 4(4), pp.477~487 (2012), 대한조선학회
- Kim, S. E., "Unstructured mesh based Reynolds stress transport modeling of complex turbulent shear flows", 39th Aerospace Sciences Meeting and Exibit (2001)
- Kim, S. E., "Assessment of eight turbulence models for a three-dimensional boundary layer involving crossflow and streamwise vortices", 40th Aerospace Sciences Meeting and Exibit (2002)
- Mi Jeong Kim, "Hydrodynamic characteristics for flow around wavy wings with different wave lengths", International Journal of Naval Architecture and Ocean Engineering, 4(4), pp.447~459 (2012), 대한조선학회
- Kim, H. J., "A proposal on standard rudder device design procedure by investigation of rudder design process at major Korean shipyards", J. Mar. Sci. Technol, 20(4), pp.450~458 (2012)
- Linton, S. W., "Computation of the post-stall behavior of a circulation controlled airfoil", J. Aircr, 31(6), pp.1273~1280 (1994)
- Nagarajan, V., "Comparison of the mariner Schilling rudder and the mariner rudder for VLCCs in strong winds", J. Mar. Sci. Technol, 13(1), pp.24~39 (2008)
- Park, J. J., "A numerical study on a circulation control foil using Coanda effect", J. Soc. Nav. Archit. Korea, 37(2), pp.70~76 (2000)
- Pulliam, T. H., "NaviereStokes computations of a circulation controlled airfoils", AIAA J, pp.85~1587 (1985)
- Rhee, S. H., "Analysis of a jetcontrolled high-lift hydrofoil with a flap", J. Ocean Eng, 30(16), pp.2117~2136 (2003)
- Seo, D. W., "A Study on the Performance a High Lift Marine Rudder Implementing the Coanda Effect", Ph.D, pp.2011
- Seo, D. W., "A numerical study on the geometry of jet injection nozzle of a Coanda control surface", J. Ship Ocean Technol, 12(3), pp.36~54 (2008)
- 서대원, "제트 노즐의 배치가 콴다 날개의 성능에 미치는 영향", 대한조선학회 논문집, 45(6), pp.569~578 (2008), 대한조선학회
- Shrewsbury, G. D., "Analysis of circulation airfoils using an implicit NaviereStokes solver", AIAA J, pp.85~171 (1985)
- Slomski, J. F., "Numerical simulation of circulation control airfoils as affected by different turbulence models", 40th Aerospace Sciences Meeting and Exibit (2002)
- Wilcox, D. C., "Turbulence Modeling for CFD" (1993), DCW Industries