• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2018.11a
• /
• pp.323-324
• /
• 2018

기존의 태양광 발전은 임야와 전답 및 건물의 상부를 이용하는 육상 설치를 위주로 발전하였다. 그러나, 제한된 공간 및 여러 가지 한계 요인으로 인해 해상 태양광 발전에 대한 필요성 및 그에 대한 관심이 급속히 대두되고 있다. 이에 따른 해상 태양광의 일반적인 개요 및 해상 태양광에서의 부력체의 역할이나 고려 사항 등 전반적인 개념에 관한 내용을 정리하였다.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.20 no.10
• /
• pp.229-235
• /
• 2019

A floating photovoltaic generation system is a new concept that combines existing photovoltaic generation technology with floating technology. This is installed in the water not on conventional land and a building. The system is designed as a unit module type that can be connected to other modules according to the power generation capacity, thereby forming a large-scale power generation facility. As a renewable energy source, it is composed of a floating structure, mooring device, photovoltaic power generation facility, and underwater cable. Because this system is installed outdoors, the effect of the wind load on the structure is very large. In this study, the wind loads most affected on the floating photovoltaic generation structure were obtained by computational fluid dynamic analysis. The flow characteristics and wind loads were analyzed for a range of wind orientations and angles of inclination. The analysis showed the position and magnitude of the maximum wind load to the wind direction and the flow characteristics around the solar panel and floating system. The wind load increased with increasing angle of inclination of the panel to the ground.

• Journal of the Society of Naval Architects of Korea
• /
• v.35 no.3
• /
• pp.46-53
• /
• 1998

The aim of the present study is to develop a direct structural analysis system for more reliable and effective structural safety estimation of floating tripe ocean structures. In this system, the following three modules are included; i.e., a rigid body motion analysis module based on the three dimensional panel method, a structural analysis module, and a stochastic analysis module based on short and long term spectral analysis techniques. The structural analysis module consists of the general purpose finite element analysis program NASTRAN and the automatic load data generation program LOADGEN. As an illustrative example, the developed system is applied to structural design of a PILOT Barge Mounted Plant(BMP). Results of the structural analysis are compared with those obtained using a two dimensional strip method.

• Journal of Ocean Engineering and Technology
• /
• v.22 no.5
• /
• pp.25-30
• /
• 2008

A B-spline based high order panel method was developed for the motion of bodies in an ideal fluid, either of infinite extent or with a free boundarysurface. In this method, both the geometry and the potential are represented by the B-spline, which guarantees more accurate results than most potential based low order methods. In the present work, we applied this B-spline based high order method to the radiation problem of floating bodies. The boundary condition on the free surface was satisfied by adopting a Kelvin-type Green function and irregular frequencies were removed by placing additional control points on the free surface surrounding the body. The numerical results were validated by comparison with existing numerical and experimental results.

• Journal of the Society of Naval Architects of Korea
• /
• v.29 no.4
• /
• pp.66-74
• /
• 1992

A panel method in the spirit of Hess & Smith(1962), and also of Dawson(1977) was developed to compute the wave resistance of a submerged, or a surface piercing, body moving in the water of finite depth. As a boundary condition on the free surface what is called the Poisson equation is used, while Yasukawa(1989) chose the Dawson equation for which the double-body flow is regarded as the basic one. In order to satisfy the boundary condition on the bottom surface automatically, the sum of a Rankine source and its image with respect to the bottom surface is chosen as the Green function, and hence the singularity is distributed only on the body and on the free surface thereby decreasing the required number of panels dramatically, compared to that of Yasukawa, without the consequential loss of accuracy. Calculations were done for a submerged sphere and for the Wigley hull, and the results are compared with other existing analytical and numerical data.