| 不规则波中半潜式平台气隙响应数值研究 |
| |
| 引用本文： | 姜宗玉,崔锦,董刚,王爱军. 不规则波中半潜式平台气隙响应数值研究[J]. 中国海洋平台, 2014, 0(1): 13-19 |
| |
| 作者姓名： | 姜宗玉 崔锦 董刚 王爱军 |
| |
| 作者单位： | 挪威埃捷力海洋工程集团;中国船级社天津分社; |
| |
| 摘 要： | 应用三维源汇分布方法，计算得到半潜式平台在波浪中六自由度运动响应函数和给定计算位置点的波面升高响应函数，将二者叠加求得给定点的相对波面升高响应函数，结合给定的波浪谱计算得到响应谱函数，对平台的气隙响应进行预报。在温和海况下，增加平台吃水有利于减小绕射效应以改善气隙性能；在恶劣海况下，减小吃水会有效降低平台垂荡共振，改善平台气隙性能；二阶效应影响与波浪绕射的剧烈程度成正比。
|
| 关 键 词： | 半潜式平台 气隙 三维源汇分布法 不规则波 |
On Numerical Investigation of Air Gap for Semi-submersible Platform in Irregular Waves |
| |
| Affiliation: | JIANG Zong-yu, CUI Jin, DONG Gang, WANG Ai-jun(1. Agility Group (China) Ltd. ,Shanghai 201206,China;2. China Classification Society, Tianjin 300457, China) |
| |
| Abstract: | The 3D source and sink distribution approach is applied to calculate the semi-submersible platform＇s RAO of motion at six degree of freedom and wave elevation at specific points. The response of motion is coupled with the wave elevation to calculate out relative wave elevation. Successively, the response spectrum of relative wave elevation is carried out associated with wave spectrum and its maximum value is predicted as air gap response. In mild sea, to increase draught advances air gap performance due to moderated diffraction effect, contrarily, to decrease draught promotes air gap performance according to constricted heave resonance in rough sea. The second order effects are proportional to the intensity of wave dif-fraction. |
| |
| Keywords: | semi-submersible platform air gap 3D source and sink distribution approach irregular wave |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
