| 一种应用于水动力数值分析的浮体湿表面网格生成技术 |
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| 引用本文： | 余建星,丁宁,戴愚志,吴海欣,傅健,王常文. 一种应用于水动力数值分析的浮体湿表面网格生成技术[J]. 中国海上油气, 2006, 18(3): 209-212 |
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| 作者姓名： | 余建星 丁宁 戴愚志 吴海欣 傅健 王常文 |
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| 作者单位： | 1. 天津大学
2. 海洋石油工程股份有限公司 |
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| 摘 要： | 给出了一种浮体湿表面网格生成方法。利用累加弦长理论对型值点进行等弦长均匀化处理,构造通过均匀型值点的双三次B样条曲面,完成曲面描述,获得曲面网格。以立柱和横梁的网格为基础,利用直线与平面的相交关系,求出立柱与横梁交线上的型值点,依据无限插值理论生成交线周围过渡区的网格,并完成浮体整体网格的拼接。
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| 关 键 词： | 水动力数值分析 浮体湿表面 网格生成 B样条 型值点 交线 |
| 修稿时间： | 2006-01-09 |
A mesh generation technology of wetted surface of floating body for hydrodynamic numerical analysis |
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| Yu Jianxing,Ding Ning,Dai Yuzhi,Wu Haixin,Fu Jian,Wang Changwen. A mesh generation technology of wetted surface of floating body for hydrodynamic numerical analysis[J]. China Offshore Oil and Gas, 2006, 18(3): 209-212 |
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| Authors: | Yu Jianxing Ding Ning Dai Yuzhi Wu Haixin Fu Jian Wang Changwen |
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| Abstract: | A method is presented to generate the mesh for wetted surface of floating body.The offsets' distribution of a surface is improved by using equal chord length uniformization process in the viewpoint of the theory of bi-cubic accumulative chord length.After a bi-cubic B-spline surface is constructed according to the improved offsets,the mesh of the curved surface are obtained.Based on the mesh of the vertical post and the crossbeam,the points on the intersection line of the vertical post with the crossbeam can be obtained using the intersection of a line with a plane.The mesh around the intersection line of the vertical post and the crossbeam are then obtained according to the theory of transfinite interpolation,so the whole mesh are obtained by putting them all together. |
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| Keywords: | hydrodynamic calculation wetted surface of floating body mesh generation B-spline offsets intersection line |
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