횡 방향으로 운동하는 투과성 진자판을 이용한 파랑에너지 차단과 추출
Block and Extraction of Wave Energy Using a Rolling Porous Pendulum Plate
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
파랑 중 횡 방향으로 운동하는 투과성 진자판을 파랑에너지를 차단과 추출을 동시에 하는 복합 시스템으 로 활용하는 기초 연구를 수행하였다. Porter and Evans(1995)가 제안한 Galerkin 방법을 사용하여 투과성 진자판 에 대한 회절과 방사 문제를 풀어 반사율과 투과율, 운동변위, 그리고 추출파워를 구하였다. Galerkin 방법은 고유 함수전개법 보다 수렴성이 좋기 때문에 짧은 계산시간에도 불구하고 정확한 해를 주었다. 투과성 진자판이 불투과 성 진자판 보다 파랑에너지 추출과 차단 측면에서 모두 효과적이라고 말할 수는 없지만 파랑 하중을 줄일 수 있 고 해수 교환이 가능하다는 장점은 지니고 있다.
Abstract
The preliminary study was carried out to utilize the rolling porous pendulum plate as a hybrid system combining blocking and extracting of wave energy. The Galerkin method suggested by Porter and Evans (1995) was used to solve the diffraction and radiation problems to obtain reflection and transmission coefficient, roll displacement, extracted power. The Galerkin method provides better convergence than the matched eigenfunction expansion method (MEEM), which improves the accuracy of the analytical solution even if the CPU time is shorter. The porous plate can not be said to be more effective than the impermeable plate in terms of wave energy extraction and wave blocking, but it has the advantage of reducing the wave load and exchanging seawater.
참고문헌 (19)
- Abul-Azm, A.G., "Wave diffraction through submerged breakwaters", J. Waterway, Port, Coastal and Ocean Engineering, 119(6), pp.587~605 (1993), ASCE[DOI]
- Chang, K.H., "Accurate solution to diffraction around a modified V-shaped breakwater", Coastal Engineering, 68, pp.56~66 (2012)[DOI]
- 조일형, "몰수형 진자판을 이용한 파력발전장치의 성능해석", 한국해양환경•에너지학회지, 20(2), pp.91~99 (2017), 한국해양환경·에너지학회
- 조일형, "안벽 앞에 부분 잠긴 진자판에 의한 파랑에너지 추출", 한국해양공학회지, 31(3), pp.208~218 (2017), 한국해양공학회[DOI]
- Cho, I.H., "Wave absorbing system using inclined perforated plates J", Fluid Mechanics, 608, pp.1~20 (2008)
- Evans, D.V., "Diffraction of water waves by submerged vertical plate", J. Fluid Mechanics, 40(3), pp.433~451 (1970)[DOI]
- Gayen, R., "A hypersingular integral equation approach to the porous plate problem", Applied Ocean Research, 46, pp.70~78 (2014)[DOI]
- Isaacson, M., "Wave interactions with vertical slotted barrier", J Waterway, Port, Coastal and Ocean Engineering, 124(3), pp.118~126 (1998)[DOI]
- Karmakar, D., "Wave transformation due to multiple bottom-standing porous barriers", Ocean Engineering, 80, pp.50~63 (2014)[DOI]
- Losada, I.J., "Propagation of oblique incident waves past rigid vertical thin barriers", Applied Ocean Research, 14(3), pp.191~199 (1992)[DOI]
- Lucas, J., "Development of a wave energy converter (WEC) design tool-application to the WaveRoller WEC including validation of numerical estimates", Proc. of the Fourth International Conference on Ocean Energy (2012)
- Macaskill, C., "Reflexion of water waves by a permeable barrier", J. Fluid Mechanics, 95(1), pp.141~157 (1979)[DOI]
- Martins-Rivas, H., "Wave power extraction from an oscillating water column at the tip of a breakwater", J. Fluid Mechanics, 626, pp.395~414 (2009)[DOI]
- Porter, R., "Complementary approximations to wave scattering by vertical barriers", J. Fluid Mechanics, 294, pp.155~180 (1995)[DOI]
- Sahoo, T., "On the scattering of water waves by porous barriers", Zeitschrift fur Angewandte Mathematik und Mechanik, 78(5), pp.364~370 (1998)[DOI]
- Tuck, E.O., "Matching problems involving flow through small holes", Advances in Applied Mechanics, 15, pp.89~158 (1975)
- Ursell, F., "The effect of a fixed vertical barrier on surface waves in deep water", Proc. of the Cambridge Philosophical Society, 43(3), pp.374~382 (1947)[DOI]
- Whittaker, T.J.T., "Nearshore oscillating wave surge converters and the development of Oyster", Philos. Trans. R. Soc., 370A, pp.345~364 (2012)
- Yu, X.P., "Diffraction of water waves by porous breakwaters", J. Waterway, Port, Coastal and Ocean Engineering, 121(6), pp.275~282 (1995)[DOI]