| 两层流体中运动物体的兴波特性 |
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| 引用本文： | 朱伟,尤云祥,缪国平,赵峰,张军. 两层流体中运动物体的兴波特性[J]. 船舶力学, 2004, 8(5): 1-9 |
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| 作者姓名： | 朱伟 尤云祥 缪国平 赵峰 张军 |
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| 作者单位： | 上海交通大学船舶海洋与建筑工程学院,上海,200030;中国船舶科学研究中心,江苏,无锡,214082 |
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| 基金项目： | 国家自然科学基金，全国高等学校优秀博士学位论文作者专项基金，国家重点实验室基金 |
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| 摘 要： | 研究了在两层流体中定常运动的三维物体产生的内波尾流场特性.在势流理论假设下,基于Green第三公式,建立了一组基于Rankine源的分层变形边界积分方程,提出了一种基于四节点双线性等参元的数值实现方法,有效地处理了在场点处立体角的计算和数值积分中的奇异性问题.对定常运动三维球体产生的表面波和内界面波进行了数值模拟,并与定常运动点源的结果进行了比较.
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| 关 键 词： | 内波 两层流体 边界元 Rankine源 |
| 文章编号： | 1007-7294(2004)05-0001-09 |
| 修稿时间： | 2003-12-29 |
Wave-making characteristics of a moving body in a two-layer fluid |
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| ZHU Wei,YOU Yun-xiang,MIAO Guo-ping,ZHAO Feng,ZHANG Jun. Wave-making characteristics of a moving body in a two-layer fluid[J]. Journal of Ship Mechanics, 2004, 8(5): 1-9 |
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| Authors: | ZHU Wei YOU Yun-xiang MIAO Guo-ping ZHAO Feng ZHANG Jun |
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| Affiliation: | ZHU Wei1,YOU Yun-xiang1,MIAO Guo-ping1,ZHAO Feng2,ZHANG Jun2 |
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| Abstract: | This paper considered the wave-making characteristics of a moving body in a two-layer fluid.Under the potential flow theory,a layered boundary integral equation system based on the Rankine source was derived by the modified form of the third Green identity,and was numerically implemented based the 4-node isoparametric element method.The proposed method can effectively deal with the calculation of solid angle and the singularity in the numerical quadrature.The surface and interface waves generated by a moving sphere were numerically simulated,the results were compared with the analytical results of a moving point source with a constant velocity.The results show that the proposed method of this paper is valuable. |
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| Keywords: | internal waves two-layer fluid boundary-element method Rankine source |
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