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Study on Practical Prediction Method for Ship Manoeuvring Performance

船舶操纵性能实用预测方法研究

基本信息

批准号：
09450375
负责人：
KIJIMA Katsuro
金额：
$ 8.9万
依托单位：
Kyushu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

项目摘要

The purpose of this study is to develop a practical prediction method for ship manoeuvring performance. In order to accomplish this purpose, the precision of the prediction method for hydrodynamic forces has to be improved and the interference coefficient between a hull, a propeller, and a rudder needs more consideration. In 1997, for the purpose of getting the hydrodynamic data, the captive model test was carried out at the ship manoeuvring basin in Kyushu University. The surge force, sway force and yaw moment acting on a ship was obtained. In 1998, the theoretical prediction method for the hydrodynamic forces was investigated by using these experimental data. As a result, a prediction method showed a fine result for the ordinary manoeuvring motion. The mathematical model was also investigated for a special situation that a ship has large drift angle. In 1999, the new practical prediction method for ship manoeuvring performance was investigated from these former results. As a result, a simple approximation method was obtained for the ships with unsteady course keeping ability. Though the ordinary method could not show the difference of the effect of the stern body shape for manoeuvring motion, this new approximation method can show the effect of the stern shape even if the ships have same principal dimension.As these result shows, this study achieved the first purpose to obtain the practical prediction method for ship manoeuvring performance.

本研究的目的是发展一种实用的船舶操纵性能预测方法。为了达到这一目的，必须提高水动力预测方法的精度，并需要更多地考虑船体、螺旋桨和舵之间的干涉系数。1997年，为了获得水动力数据，在九州大学的船舶操纵池进行了自保模型试验。得到了作用在船舶上的横摆力、横摆力和横摆力矩。1998年，利用这些实验数据，研究了水动力的理论预测方法。结果表明，该预测方法对普通机动运动具有较好的预测效果。并对船舶大偏航角的特殊情况进行了数学模型的研究。1999年，在这些结果的基础上，研究了船舶操纵性能新的实用预测方法。对具有非定常航向保持能力的船舶，给出了一种简单的近似方法。虽然常规方法不能反映尾体形状对操纵运动影响的差异，但这种新的近似方法可以反映主维数相同的船舶尾体形状对操纵运动的影响。结果表明，本研究达到了获得船舶操纵性能实用预测方法的首要目的。