Wave diffraction analysis for a very large floating structure by accelerated green's function method in infinite water depth

Takashi Okafuji; Tomoaki Utsunomiya; Eiichi Watanabe

doi:10.2208/jsceja.62.143

Wave diffraction analysis for a very large floating structure by accelerated green's function method in infinite water depth

Takashi Okafuji, Tomoaki Utsunomiya, Eiichi Watanabe

Research output: Contribution to journal › Article

Abstract

This paper presents an accelerated Green's function method for wave diffraction analysis of a very large floating structure (VLFS) in infinite water depth. The formulations have been made for multipole expansion of Green's function in infinite water depth and the expressions for conversion of the expansion coefficients, which are required for application of the fast multipole algorithm. Then, wave diffraction analysis around a very large floating structure in infinite water depth using accelerated Green's function method has been presented. Numerical examples have shown the efficiency of O(N) in computation time, where JV'' is the number of unknowns for the velocity potential.

Original language	English
Pages (from-to)	143-152
Number of pages	10
Journal	Doboku Gakkai Ronbunshuu A
Volume	62
Issue number	1
DOIs	https://doi.org/10.2208/jsceja.62.143
Publication status	Published - Dec 1 2006
Externally published	Yes

All Science Journal Classification (ASJC) codes

Civil and Structural Engineering
Building and Construction
Mechanics of Materials
Mechanical Engineering

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10.2208/jsceja.62.143

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abstract = "This paper presents an accelerated Green's function method for wave diffraction analysis of a very large floating structure (VLFS) in infinite water depth. The formulations have been made for multipole expansion of Green's function in infinite water depth and the expressions for conversion of the expansion coefficients, which are required for application of the fast multipole algorithm. Then, wave diffraction analysis around a very large floating structure in infinite water depth using accelerated Green's function method has been presented. Numerical examples have shown the efficiency of O(N) in computation time, where JV'' is the number of unknowns for the velocity potential.",

author = "Takashi Okafuji and Tomoaki Utsunomiya and Eiichi Watanabe",

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