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- MOTORA Seizo
- 東京大学工学部船舶工学科
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- UEDA Kenichi
- 海上保安庁船舶技術部
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- SARUTA Toshihiko
- 船舶技術研究所運動性能部
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- IDA Tsutomu
- 東京大学工学部船舶工学科
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- KUBOTA Tanekazu
- 三井造船(株)基本設計室
Bibliographic Information
- Other Title
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- 減揺水槽の不規則波中模型実験について
- ゲン ヨウスイソウ ノ フキソクハチュウ モケイ ジッケン ニ ツイテ
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Abstract
A navigation aids research vessel "Tsushima" of Maritime Safety Agency equiped with an anti-rolling tank has been constructed at Tamano Ship Yard of Mitsui Shipbuilding Co. At the design stage of the ship, performance test of the anti-rolling tank was conducted on a 1/28 scale self-propelled model at the Seakeeping Basin of Tokyo University. In this paper, results of model experiments in irregular seas are reported. In those experiments, the model was encountered with irregular waves which had simulated ITTC spectra for 10 m/sec and 15 m/sec wind speed, and motion of the model was measured by a data recorder. Spectral analysis as well as collation of amplitudes were conducted. Making use of analysed data, the effectiveness of the anti-rolling tank was evaluated by the following formula. Effectiveness = ((σ_φ/σ_w) without - (σ_φ/σ_w) with)/((σ_φ/σ_w) without) ×100(%) where σ_φ and σ_w are the square root of the variance of rolling amplitude and wave amplitude respectively, and with and without mean anti-rolling tank active and inactive respectively. Results showed that the tank was not effective in head seas, slightly effective in beam seas and considerably effective in following oblique seas. The maximum effectiveness of the tank reached about 50% which seemed to be a satisfactory result.
Journal
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- Journal of the Kansai Society of Naval Architects, Japan
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Journal of the Kansai Society of Naval Architects, Japan 167 (0), 23-28, 1977
The Japan Society of Naval Architects and Ocean Engineers
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Details 詳細情報について
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- CRID
- 1390282679471507840
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- NII Article ID
- 110003880672
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- NII Book ID
- AN00349587
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- ISSN
- 2433104X
- 03899101
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- NDL BIB ID
- 1917572
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed