大连海事大学学报 >
2017 , Vol. 43 >Issue 4: 1 - 6
DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2017.04.001
半滑行航态下三体船布局对附加质量影响的数值研究
收稿日期: 2017-05-03
修回日期: 2017-06-07
网络出版日期: 2017-06-07
基金资助
国家国际科学合作专项项目(2013DFA80760)；科技创新项目；中央高校基本科研业务费专项基金资助项目（3132016339）.
Numerical study on the influence of trimaran layout on added mass in semi-planing state
Received date: 2017-05-03
Revised date: 2017-06-07
Online published: 2017-06-07
为分析半滑行航态下(1.0<Fr▽<3.0)三体船侧体布局对附加质量和船舶操纵性能的影响，以wigley船为母型船建立不同侧体布局的三体船模型，考虑半滑行状态下升沉、纵摇变化，基于三维势流理论，采用面元法计算三体船六自由度附加质量水动力系数.结果表明: 升沉、纵摇导致的湿表面和排水体积变化对三体船水平面上操纵性相关的纵荡、横荡和艏摇附加质量影响较大，较正浮状态下平均增幅分别为41.37%,21.74%及21.49%.侧体纵向布局一定情况下，横向布局对附加质量影响相对较小; 横向布局一定情况下，侧体位于船体后方具有相对较大的艏摇附加质量，有利于船舶航向的稳定性; 侧体布置船舯部具有相对较小的艏摇附加质量，有利于船舶转艏性能; 侧体布置在船前部，船体艏摇附加质量和船舶转艏性能处于前两者侧体布置的性能之间.
张雷 , 张佳宁 , 董国祥 , 陈伟民 . 半滑行航态下三体船布局对附加质量影响的数值研究[J]. 大连海事大学学报, 2017 , 43(4) : 1 -6 . DOI: 10.16411/j.cnki.issn1006-7736.2017.04.001
In order to study the influence of trimaran side hulls layout on added mass and maneuverability in semi-planing state (1.0< Fr▽ <3.0), the model of the trimaran with different side hull layout was established by using wigley ship as parent ship. In consideration of the variation of heave, pitch and displacement in semi-planing state, the added mass hydrodynamic coefficient of six-degree trimaran was calculated based on 3-d potential flow theory by using the panel method. Results show that the wetted surface and volume change of drainage resulted from heaving and pitch have a greater influence on added mass of surge, sway and yaw, which is related to the maneuverability in the horizontal plane of trimaran. Compared with the upright state, the average increase was 41.37%,21.74% and 21.49% respectively. The impact of different side hull transverse positions on the added mass is relatively smaller under a certain longitudinal side hull layout. In the case of a certain transverse side hull layout, the trimaran has a relatively larger added mass of yaw while the side hull is disposed in rear of the hull, which contributes to the stability of the ship course. When the side hull is disposed beside the amidship, the trimaran has a relatively smaller added mass of yaw, which contributes to the course-changing performance. When the side hull is placed in the front, the yaw added mass and the course-changing ability are between above two layout.
Key words： semi-planing state; trimaran; side hulls layout; added mass; panel method; maneuverability
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