Numerical Calculation for Added Water Mass of Ternate Cylinders
-
摘要: 研究船舶总振动时，单体船及双体船的附连水质量已经有了计箅公式，但是针对多体船（如三体船）的总振动，国内外的研究甚少。随着三体船的需求增加，需在设计时对其总振动进行预报。正确预报三体船的振动，需正确计算参与振动的附连水质 量.介绍采用CFD软件Fluent数值计算三圆柱体附连水质量的简便方法，通过计算得出三圆柱体附连水质堪随间距变化的规律，得出三体船垂向振动的单位长度的附连水质量，为三体船的总振动计算提供了依据.Abstract: Until now, there have been calculation formulations for added water mass of monohull and eatamaran in the research of ship overall vibration. But for the overall vibration of muhihull, such as trimaran, there has bee n little research domestically and overseas. With the increasing need of trimaran, its overall vibration should be calculated in the process of design. And the proper calculation of its overall vibration is in need of its added water mass. A simple method for calculating the added water mass of ternate cylinders by means of the CFD software Fluent is put forward in the paper. From the calculation, the change of their added water mas s with their distance is obtained, and the added water mass of unit length of the trimaran vertical vibration is also obtained, which provides foundation for the trimaran overall vibration.
-
Keywords:
- trimaran /
- overall vibration /
- added water mass /
- Fluent /
- dynamic mesh
-
-
[1] 翁长俭，张保玉．船体振动学[M]．北京：人民交通出版社．1985． [2] 王显正．船舶总振动特性研究[D]．大连：大连理工大学，2005． [3] 郑豪，郭列．双体穿浪船船体振动特性分析(J]．中国造船，2006，47(1)：90—93． [4] 张伟．轻型高速特种双体船动态特性数值分析研究[D] 哈尔滨：哈尔滨工程大学．2004．李志强．船舶总振动建模方法研究[D]．大连：大连理_T 大学．2006．马烨．单雪雄．数值计算复杂外形物体附加质量的新方法[J]．计算机仿真，2007，24(5)：75—78，113． [5] 吴望一．流体力学[M]．北京：北京大学出版社，2000． [6] Fluent，GAMBIT User Guide[M]．Fluent Inc．USA，2001． [7] 李培勇，裘泳铭，顾敏童．高速三体船型概念设计研究 [J]．上海交通大学学报，2004，38(11)：1885—1888
计量
- 文章访问数: 214
- HTML全文浏览量: 30
- PDF下载量: 709
下载:
