| 近自由面三维水翼的水动力时域分析 |
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| 引用本文： | 陈庆任,叶恒奎,管延敏. 近自由面三维水翼的水动力时域分析[J]. 船舶力学, 2010, 14(12): 1331-1339. DOI: 10.3969/j.issn.1007-7294.2010.12.002 |
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| 作者姓名： | 陈庆任 叶恒奎 管延敏 |
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| 作者单位： | 华中科技大学船舶与海洋工程学院,武汉,430074;华中科技大学船舶与海洋工程学院,武汉,430074;华中科技大学船舶与海洋工程学院,武汉,430074 |
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| 摘 要： | 基于格林定理,将Bankine源和偶极子置于边界面上,用时间步进法计算了近自由面条件下的三维水翼的势流场.其中在自由面采用线性自由面边界条件,在尾涡面上采用偶极子布置以满足Kutta条件.影响系数中的奇异积分及非奇异积分都采用一种精确积分的方法计算.文中确定了计算模型和参数,给出了不同航速、展长及浸深下的数值计算结果,并与相关文献结果进行了对比,证实了该方法是一种可靠、有效的时域算法.
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| 关 键 词： | 三维水翼 自由面 Rankine源 偶极子 时域 精确积分 |
Hydrodynamic Analysis of 3-D Hydrofoil under Free Surface in Time Domain |
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| CHEN Qing-ren,YE Heng-kui,GUAN Yan-min. Hydrodynamic Analysis of 3-D Hydrofoil under Free Surface in Time Domain[J]. Journal of Ship Mechanics, 2010, 14(12): 1331-1339. DOI: 10.3969/j.issn.1007-7294.2010.12.002 |
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| Authors: | CHEN Qing-ren YE Heng-kui GUAN Yan-min |
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| Affiliation: | CHEN Qing-ren,YE Heng-kui,GUAN Yan-min (College of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | A time domain panel method based on Green's theorem was developed for the hydrody-nanuc analysis of a three -dimensional hydrofoil moving under the free surface.The Rankine sources and dipoles are distributed on boundary surfaces including the hydrofoil body surface and free surface. The dipoles are also placed on the wake surface. The Kutta condition is satisfied. A time-stepping computation scheme is employed in this paper.The singular integrals and non-singu-lar integrals of influence coefficients are performed by an analytical method. The numerical results of pressure distribution,lifting force, wave resistance and wave patterns are presented for the three-dimensional hydrofoil. The computed results were compared with others, good agreements are ob-tained. |
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| Keywords: | 3-D hydrofoil free surface Rankine source dipole time domain analytical integral |
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