Rudder effectiveness correction for scale model ship testing
Rudder effectiveness correction for scale model ship testing
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DOI：
10.1016/j.oceaneng.2014.10.006
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发表时间：
2014-12
影响因子：
5
通讯作者：
M. Ueno;Y. Tsukada;Y. Kitagawa
中科院分区：
文献类型：
--
作者：
M. Ueno;Y. Tsukada;Y. Kitagawa
作者提出了一种利用缩比模型进行自由航行操纵试验的舵效修正的思想。其目的是利用作者研制的辅助推力器实现缩尺模型的全尺寸等效机动运动。辅助推力器可以产生舵效修正所需的时变前向力。辅助推力由表面摩擦修正所需的力乘以新定义的方向舵有效性修正系数表示。模型船和实船在定常直线航行中的推进性能决定了该系数的值。理论计算使用模块化的数学模型应用于集装箱船和油轮澄清特性的因素。水池试验和数值模拟验证了该方法的可行性。
The authors propose an idea of rudder effectiveness correction for free-running manoeuvring tests using scale models. The idea aims to realize the full-scale-equivalent manoeuvring motion with scale models using the auxiliary thruster that the authors developed. The auxiliary thruster can generate time varying forward force needed for the rudder effectiveness correction. The auxiliary thrust is represented by the force required for the skin friction correction multiplied by the newly defined rudder effectiveness correction factor. The propulsive performance of the model and full-scale ships in steady straight running determines a value of the factor. Theoretical calculations using the modular mathematical model applied to a container ship and a tanker clarify characteristics of the factor. The tank tests and numerical simulations confirm the feasibility of the idea.