Panel generation framework for seakeeping analysis of multiple bodies and offshore structures
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This paper presents a panel generation framework for seakeeping analysis of multiple bodies and offshore structures. The configurations of multiple bodies and offshore structures are different from those of a single ship. In particular, the topological structure of the free surfaces becomes complicated due to the multiple floating bodies, resulting in multiple classifications for the free surfaces based on their genus. The multi-body configuration consists of two floating bodies placed in two configurations, i.e., side by side and tandem, which would generate two holes in the free surface. For the offshore structure case, multiple holes are generated in the free-surface domain due to the legs of the offshore structure. In this work, strategies for generating body and free-surface panels are provided, and the results are analyzed. A software prototype that implements the proposed methods is developed to provide efficient panel generation for multiple bodies and offshore structures. Examples demonstrate that the proposed framework can be successfully used for seakeeping analysis of multiple bodies and offshore structures.
KeywordsMulti-body Offshore structure Panel generation Seakeeping Analysis
This research was supported by the Basic Research Project through a grant provided by GIST in 2012 and the WISH-OFFSHORE joint industry project, which is funded by several shipbuilding industry and ship classification societies. These supports are gratefully acknowledged.
- 1.Lin WM, Meinhold M, Salvensen N, Yue DK (1994) Large-amplitude motions and wave loads for ship design. 20th symposium on naval hydrodynamics, pp 205–206Google Scholar
- 2.Huang Y (1998) Nonlinear ship motions by a Rankine panel method. PhD thesis, Massachusetts Institute of Technology, CambridgeGoogle Scholar
- 3.Lee CH (1995) WAMIT theory manual. MIT Report 95-2, Department of Ocean Engineering, Massachusetts Institute of Technology, CambridgeGoogle Scholar
- 4.Kim Y, Kim KH, Song MJ (2010) Numerical analysis and validation of nonlinear motions and loads on ships in waves. The 11th international symposium on practical design of ships and other floating structures, Graduate School and Research in Engineering Federal University of Rio de Janeiro, Rio de Janeiro, BrazilGoogle Scholar
- 6.Gie TS, de Boom WC (1981) The wave induced motions of a tension leg platform in deep water. Offshore Technology ConferenceGoogle Scholar
- 11.Nowottny D (1997) Quadrilateral mesh generation via geometrically optimized domain decomposition. In: Proceedings of the sixth international mesh round table, Park City, UtahGoogle Scholar
- 18.Bronsart R, Knieling G (2004) Automatic generation of a panel based representation of a ship hull surface for wave resistance calculation. In: 9th international symposium on practical design of ships and other floating structures (PRADS), Lübeck, GermanyGoogle Scholar
- 19.Jensen PS (1990) Automatic panel generation for seakeeping and wave resistance calculation. CFD and CAD in ship design. Elsevier, Amsterdam, pp 133–146Google Scholar