| 复杂几何边界限制水域中船舶水动力的计算 |
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| 引用本文： | 许汉珍,王刚,陆小刚,张戎军. 复杂几何边界限制水域中船舶水动力的计算[J]. 华中科技大学学报(自然科学版), 1996, 0(7) |
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| 作者姓名： | 许汉珍 王刚 陆小刚 张戎军 |
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| 作者单位： | 华中理工大学船舶和海洋工程系 |
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| 摘 要： | 研究了深吃水船舶在复杂几何边界限制水域中运动时的受力问题．根据细长体理论，采用匹配渐近展开的方法，得到了横流积分方程．利用数值保角变换的方法，求解了包括非对称多边形边界在内的限制水域障碍格林函数．对不同特点的多边形边界的保角变换方法进行了重点讨论，给出了相应的能避免数值奇异性产生的保角变换过程和计算公式．计算结果与其他算法（面源法）及试验相一致．
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| 关 键 词： | 船舶水动力；限制水域；数值保角变换；障碍格林函数 |
Computation of Ship Hydrodynamics in Restricted Waterways with Complicated Polygon Boundary |
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| Xu Hanzhen, Wang Gang, Lu Xiaogang, Zhang Rongjun. Computation of Ship Hydrodynamics in Restricted Waterways with Complicated Polygon Boundary[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 1996, 0(7) |
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| Authors: | Xu Hanzhen Wang Gang Lu Xiaogang Zhang Rongjun |
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| Abstract: | he bank effects on a ship sailing in restricted waterways are discussed. Based on the slender body theory, the lateral integral equation is obtained by matched asymptotic expansion. Numerical conformal mapping is used to solve the obstructive Green function with asymmetric polygon boundary. Conformal transformation and the calculation formulae for avoiding numerical singularities are presented. Two examples are given and the calculation results show that they are in agreement with the test data and those by the panel method. |
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| Keywords: | ship hydrodynamics restricted waterways numerical conformal mapping obstructive Green function |
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