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Development of Estimation Method for Propulsive Performance of High Speed Ship

高速船舶推进性能估算方法的研制

基本信息

批准号：
06555301
负责人：
NAKATAKE Kuniharu
金额：
$ 7.68万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06555301/
关键词：
High Speed Ship Propulsive Performance Cavitation Interaction Thick Wing Theory Air Drawing 高速船推進性能

项目摘要

The results obtained for three years are as follows.1.As one of thick wing theories, we developed SQCM (Source + QCM) whose feature is that Kutta condition for 3-D wing is satisfied by solving once the linear simultaneous equations. SQCM is applicable to very thin wing (thickness chord ratio=0.001).2.SQCM is successfully applied to the propellers with hub in uniform flow.3.We developed a method to calculate the charactieristics of wing in the cavitating condition, making use of the equivalent 2-D wing and linearized cavitation theories.4.Above method was applied to supercavitating propellers. The results were in good agreement with experimental ones. This method gave excessive cavitation for the conventional propellers.5.Based on SQCM,we developed a method to calculate partially cavitating flow on a 2-D wing. This method is being extended to the supercavitating flow.6.Aiming to analyze the characteristics of propellers in nonuniform flow, we developed a method to calculate the characteristics of 2-D wing in unsteady flow.7.Based on the Rankine source method, we calculated the wave flows around wide ships and a high speed ship with hydrofoils.8.We developed a method to calculate the wave flow around a high speed ship with hydrofoils, considering the change of attitude.9.We proposed a method to design a propeller working well in the cavitating condition.

三年来取得的成果如下： 1.作为厚翼理论之一，我们发展了SQCM（Source + QCM），其特点是通过求解一次线性联立方程组即可满足3维翼的库塔条件。 SQCM适用于非常薄的机翼（厚度弦比=0.001）。2.SQCM成功应用于均匀流动的带轮毂螺旋桨。3.利用等效二维机翼和线性空化理论，开发了空化条件下机翼特性的计算方法。4.上述方法应用于超空泡螺旋桨。结果与实验结果吻合良好。该方法对传统螺旋桨造成了过多的空化。5.基于SQCM，我们开发了一种计算二维机翼部分空化流的方法。该方法正在推广到超空泡流中。6.针对非均匀流中螺旋桨的特性，提出了非定常流中二维机翼特性的计算方法。7.基于朗肯源方法，计算了宽型船和带水翼的高速船周围的波浪流。8.开发了一种考虑了水翼高速船周围波浪流的计算方法。 9.我们提出了一种设计在空化条件下工作良好的螺旋桨的方法。