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Second-order wave effects on ocean platforms: theory and experiment
https://doi.org/10.18999/memsenu.44.2.224
https://doi.org/10.18999/memsenu.44.2.22454cc288a-ad63-47bf-ac91-fd15b6c9b703
名前 / ファイル | ライセンス | アクション |
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2020-10-23 | |||||
タイトル | ||||||
タイトル | Second-order wave effects on ocean platforms: theory and experiment | |||||
言語 | en | |||||
著者 |
Matsui, Tetsuya
× Matsui, Tetsuya |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Nonlinear wave load | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | second-order diffraction force | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | wave springing | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | sum-frequency oscillation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | floating body | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | tension leg platform | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | vertical-plane motion | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | tether force | |||||
抄録 | ||||||
内容記述 | Second-order wave effects on the behaviour of ocean platforms have been studied theoretically and experimentally, with particular interest in sum-frequency oscillations of tension leg platforms. These investigations are reviewed in this paper based on the recent works by the author and his co-workers[1)-3)].The paper consists of two parts. In Part 1, the complete second-order diffraction theory is formulated for predicting second-order wave loads on arbitrary three-dimensional bodies floating in regular waves. Green's second identity is exploited to express the secondorder forces due to the second-order potential in terms of the first-order quantities alone. The resulting expressions for the second-order forces are evaluated from numerical first-order solutions based on the hybrid integral-equation method. Numerical examples are presented for a variety of geometries and compared with previous theoretical and numerical solutions as well as with model test results. Agreement is seen to be satisfactory, illustrating the validity of the proposed approach. In Part 2, the results are presented of the model tests which were performed in regular waves to measure the second-order sum-frequency oscillations and tether forces of tension leg platforms. These test results are used to validate the predictions based on the complete second-order diffraction theory developed in Part 1. It is found that the vertical-plane motions and resulting tether forces of the tension leg platforms include second-order sum-frequency resonant components which are comparable in magnitude with first-order wave-frequency responses. The correlation between predicted and measured results is overall satisfactory, confirming the validity of the theoretical predictions. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | School of Engineering, Nagoya University | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
ID登録 | ||||||
ID登録 | 10.18999/memsenu.44.2.224 | |||||
ID登録タイプ | JaLC | |||||
ISSN(print) | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0919-0805 | |||||
書誌情報 |
en : Memoirs of the School of Engineering, Nagoya University 巻 44, 号 2, p. 224-266, 発行日 1993-03-31 |
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著者版フラグ | ||||||
値 | publisher |