The Effects of Deck Wetting on Capsize of Ships

Views: 26
Downloads: 0
このエントリーをはてなブックマークに追加

The Effects of Deck Wetting on Capsize of Ships

Format:
Grant
Kyushu Univ. Production Kyushu Univ. Production
Title(Other Language):
海水打ち込みによる船舶の転覆機構の研究
Responsibility:
大楠 丹(九州大学・応用力学研究所・教授)
小寺山 亘(九州大学・応用力学研究所・教授)
KOTERAYAMA Wataru(九州大学・応用力学研究所・教授)
Language:
Japanese
Project Year:
1987-1988
Latest Report:
In order to know the ship's behaviour in waves under the influence of deck wetness and resultant shipping water, it is not sufficient to predict whether the deck wetness occurs or not. it is crucial to know how much amount of water flows into on deck. Moreover we need to predict how the shipping water due to the deck wetness changes the ship motions to lead to the fatal stage of capsize. In this project, firstly we confirmed that the theoretical prediction of critical wave height of deck wetness agrees quite well with experiments. Secondly, adopting a simple formula for the velocity of water flowing into on deck, we proposed an empirical method of calculating the amount of shipping water. The effect of these shipping water was incorporated in a simplified manner into the equations of ship motions in beam seas. The motion equations adopted in this project are not rigorous, when describing the transient phenomena of deck wetness and the effect of dynamic motion of shipping water. llowever we confirmed that the proposed simulation method describes well the behaviour of ship model observed in experiments, from the start of deck wethness to the capsize or to the suppression of deck wethness. Furthermore we developed a computer program to display the simulation results as the animation on the picture of computer graphic. This makes it easy to understand the overall phenomena of ship's capsize, and thus may provide various information useful for the investigation of safety of a ship. Read more
View fulltext

Similar Items:

3
ケ-ブル布設船の運動制御に関する研究 by 貴島 勝郎; KIJIMA Katsuro
9
実船搭載槽内スロッシング荷重の推定法に関する研究 by 中武 一明; Nakatake Kuniharu; 新開 明二
4
海底資源精密探査ビーグルの運動制御の研究 by 小寺山 亘; KOTERAYAMA Wataru
5
シーマージンの確率論的推定法の研究 by 新開 明二; SHINKAI Akiji
12
実海域波浪中の水粒子運動の計測 by 小寺山 亘; KOTERAYAMA Wataru
3.
ケ-ブル布設船の運動制御に関する研究 by 貴島 勝郎; KIJIMA Katsuro
4.
海底資源精密探査ビーグルの運動制御の研究 by 小寺山 亘; KOTERAYAMA Wataru
5.
シーマージンの確率論的推定法の研究 by 新開 明二; SHINKAI Akiji
9.
実船搭載槽内スロッシング荷重の推定法に関する研究 by 中武 一明; Nakatake Kuniharu; 新開 明二
12.
実海域波浪中の水粒子運動の計測 by 小寺山 亘; KOTERAYAMA Wataru