書誌事項
- タイトル別名
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- Model Experiment on Steady Wave Forces and Moment Acting on a Ship a Rest
- テイシジ ノ フネ ニ ハタラク テイジョウハリョク ニ カンスル モケイ ジッケン
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抄録
Steady wave forces and moment at rest are important to estimate drifting motion of a ship in waves or to estimate manoeuvrability of a ship in waves at low speed. However, it is difficult to measure these kinds of forces and moment without disturbing six degrees of ship motions in waves. Restraining free ship motions during measurement distorts property of steady wave forces and moment. That is one of reasons why not so many experimental data consisting of surge and sway forces and yaw moment have been reported so far. Experiment for measuring steady wave forces and moment at zero forward speed are carried out using a newly developed measuring system. This measuring system uses three torque motors which play two roles, one is as weak springs to produce restoring forces for surge, sway and yaw motion and the other is as counter weight for balancing steady wave forces and moment. Using this mechanism, one can easily attenuate spring constants and counter forces and moment by setting continuous electrical signal and make a model ship remain in designated area during measurement without much affecting six degrees of free ship motions of wave period. Calculations based on 3-D panel method and Strip method are provided for evaluating experimental data including ship motion of wave period and steady wave forces and moment. Calculated values for ship motions well describe experimental data. Therefore this measuring system is considered not to restrain model ship motions of wave period during measurement. One of calculations for surge and sway forces shows fairly good agreement with experimental data. Some discussions about differences between experimental data and calculations for yaw moment and also about reliability of experimental data for steady wave forces and moment are provided.
収録刊行物
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- 関西造船協会論文集
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関西造船協会論文集 2001 (235), 69-77, 2001
社団法人 日本船舶海洋工学会
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詳細情報 詳細情報について
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- CRID
- 1390282680175673216
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- NII論文ID
- 110003864381
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- NII書誌ID
- AA11546894
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- NDL書誌ID
- 5907584
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- ISSN
- 13467727
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可