Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
권호 표지

Hydroelastic Analysis of Pontoon Type VLFS Considering the Location and Shape of OWC Chamber

공기챔버 위치에 따른 폰툰형 초대형 구조물 유탄성응답 해석

  • 홍사영 (한국해양연구원 해양시스템안전연구소) ;
  • 경조현 (한국해양연구원 해양시스템안전연구소) ;
  • 김병완 (한국해양연구원 해양시스템안전연구소)
  • Published : 2008.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

A numerical investigation is made on the effects of the location and shape of the front wall of an OWC(Oscillating Water Column) chamber on the hydroelastic response of a VLFS. Most of the studies on the effects of an OWC chamber on the response of a VLFS have assumed the location of the OWC chamber to be at the front of the VLFS. In the present study, an OWC-chamber is introduced at an arbitrary position in relation to a VLFS to determine the influence of the location and shape of the OWC chamber on the hydroelastic response of the VLFS. A finite element method is adopted as a numerical scheme for the fluid domain. or the finite element method, combined with a mode superposition method, is applied in order to consider the change of mass and stiffness The OWC chamber in a piecewise constant manner. or the facilitated anefficient analysis of The hydroelastic response of the VLFS, as well as the easy modeling of different shape and material properties for the structure. Reduction of hydroelastic response of the VLFS is investigated for various locations and front wall shapes of the owe chamber.

Keywords

References

  1. 김병완, 홍사영, 경조현, 조석규, 유황진 (2007). “OWC 방파제 일체형 부유구조물의 응답특성에 관한 실험연구”', 한국해양공학회 추계학술대회논문집, pp 79-82
  2. 신현경 등 (1993-1996). 부유식 해양구조물에 관한 연구, 울산대학교 보고서
  3. 정태영 등 (1995-1999). 해양공간이용 대형 복합플랜트 개발사업, 한국기계연구원 보고서
  4. 홍사영 등 (1999-2007). 초대형 부유식 해상구조물 기술개발, 한국해양연구원 보고서
  5. Bai, K.J. (1977). “A Localized Finite-element Method for Steady Three Dimensional Free-Surface Flow Problems,” Proc. 2nd International Conference on Numerical Ship Hydrodynamics, pp 1-10
  6. Bai, K.J. and Yeung, R. (1974). “Numerical Solutions to Free Surface Flow Problems”, Proc. 10th Symposium Naval Hydrodynamics, Office Naval Research, Cambridge, Mass., pp 609-647
  7. Hong, nc. Hong, S.Y. and Hong, S.W. (2004). “Numerical Study of the Motions and Drift Force of a Floating OWC Device”, Ocean Engineering, Vol 31, pp 139-164 https://doi.org/10.1016/S0029-8018(03)00118-5
  8. Hong, S.Y., Choi, Y.R. and Hong, S.W. (2002). “Analysis of Hydro-elastic Response of Pontoon-type VLFS Coupled with Floating Breakwaters using a Higher-Order Boundary Element Method”, Proc. 12th ISOPE Conference, pp 313-318
  9. Hong, S.Y. and Kyoung, J.B. (2006). “Hydroelastic Response of VLFS Coupled with OWC-type Breakwater”, Proc. 4th Int. Conf. on Hydroelasticity in Marine Technology, Wuxi, pp 245-254
  10. Hong, D.C. and Hong, S.Y. (2007). “Hydroelastic Responses and Drift Forces of a Very Long Floating Structure Equipped with a Pin-connected Oscillating-water-colurnn Breakwater System”, Ocean Engineering, Vol 34, pp 676-708 https://doi.org/10.1016/j.oceaneng.2006.05.011
  11. Kashiwagi, M. (1999). “Research on Hydroelastic Responses of VLFS: Recent Progress and Future Work”, Proc. 9th ISOPE Conference, Vol 1, pp 17-26
  12. Kim, B.W., Kyoung, J.H., Hong, S.Y. and Cho, S.K. (2005). “Investigation of the Effect of Stiffness Distribution Shape on Hydroelastic Response of Very Large Floating Structures”, Proc. 12th ISOPE Conference, pp 210-217
  13. Maeda, H., Rheem, C-K, Washio, Y., Osawa, H., Nagata, Y., Ikoma, T., Fujita, N. and Arita, M. (2001). “Reduction Effects of Hydroelastic Responses on a Very Large Floating Structure with Wave Energy Absorption Devices using OWC System”, Proc, 20th Offshore Mechanics and Arctic Eng
  14. Takagi, K., Shimada, K. and Ikebuchi, T. (2000). “An Anti-motion Device for a Very Large Floating Structure”, Marine Structure 13, pp 421-436 https://doi.org/10.1016/S0951-8339(00)00018-6
  15. Takaki, M., Imai, Y. and Lee, S.M. (2002). “Reduction Effect of a Submerged Plate Toward Wave Exciting Forces Acting on a Very Large Floating Structure”, Proc, 12th ISOPE Conference, Kitakyushu, pp 391-398
  16. Watanabe, E., Utsunomiya, T. and Wang, C.M. (2004). “Hydroelastic Analysis of Pontoon-type VLFS : A literature Survey”, Engineering structures, Vol 26, pp 245-256 https://doi.org/10.1016/j.engstruct.2003.10.001
  17. Watanabe, E., Utsunomiya, T., Kuramoto, M., Ohta, H., Tori, T. and Hayashi, N. (2003). “Wave Response Analysis of VLFS with an Attached Submerged Plate”, IJOPE, Vol 13, No.3, pp 190 -197