Wave force analysis of the two vertical cylinders by boundary element method

The diffraction of waves by two bottom-fixed vertical circular cylinders is investigated by using boundary element method. This method has been successfully applied to the isolated vertical circular cylinder and now is used to study the interaction between waves and two vertical cylinders. In this p...

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Bibliographic Details
Published in:KSCE journal of civil engineering 2008, 12(6), , pp.359-366
Main Authors: Kim, Nam Hyeong, Cao, Tan Ngoc Than
Format: Article
Language:English
Subjects:
Analysis
Boundary element method
Circular cylinders
Civil Engineering
Cylinders
Electrical engineering
Engineering
Finite element analysis
Geotechnical Engineering & Applied Earth Sciences
Incident waves
Industrial Pollution Prevention
Integral equations
Numerical analysis
Offshore structures
Potential theory
Studies
Velocity potential
Vertical cylinders
Wave diffraction
Wave forces
토목공학
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Summary:The diffraction of waves by two bottom-fixed vertical circular cylinders is investigated by using boundary element method. This method has been successfully applied to the isolated vertical circular cylinder and now is used to study the interaction between waves and two vertical cylinders. In this paper, a numerical analysis by boundary element method is developed by using linear potential theory. The numerical analysis by boundary element method is based on Green’s theorem and introduced to an integral equation for the fluid velocity potential around the vertical circular cylinders. To verify this method, the wave-exciting forces on two transverse and tandem cylinders obtained in this study are compared with the results computed by the multiple scattering method. The comparisons show that the results of this study are strong agreement with their results. Also in this paper, several numerical examples are given to illustrate the effects of various parameters on the wave-exciting force such as the separation distance, the relative size of the cylinders and the incident wave angle. This numerical analysis developed by boundary element method will be applied for various offshore structures to be constructed in the future.
ISSN:1226-7988
1976-3808
DOI:10.1007/s12205-008-0359-7