| 二维物体的振荡和冲击压力的计算 |
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| 引用本文： | 宋竞正,戴仰山,李维扬.二维物体的振荡和冲击压力的计算[J].哈尔滨工程大学学报,1988(4). |
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| 作者姓名： | 宋竞正 戴仰山 李维扬 |
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| 作者单位： | 哈尔滨船舶工程学院船舶与海洋工程系
(宋竞正，戴仰山)，哈尔滨船舶工程学院船舶与海洋工程系(李维扬) |
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| 摘 要： | 本文讨论具有任意对称形状的二维物体的振荡和冲击压力的计算.其中二维物体恒速垂直入水的冲击压力计算,考虑到水面隆起效应和物体浸没形状变化的影响后,将它转化为一系列的绕流问题,而求解这些绕流问题的数值方法是借助多系数的保角变换技术.对两个典型的船体剖面(渔轮的舯剖面和集装箱船的艏部剖面)分别计算了它们的振荡压力和冲击压力,获得了不同频率或不同吃水情况下的压力沿剖面周界分布的图象.文中给出了若干数值计算结果,并由此得出某些结论.
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| 关 键 词： | 二维物体 冲击压力 振荡压力 保角变换 |
The Computation of Oscillatory Pressure and Impact Pressure for Two-Dimensional Bodies |
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| Song Jingzheng, Dai Yangshan, Li Weiyang.The Computation of Oscillatory Pressure and Impact Pressure for Two-Dimensional Bodies[J].Journal of Harbin Engineering University,1988(4). |
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| Authors: | Song Jingzheng Dai Yangshan Li Weiyang |
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| Affiliation: | Dept. of Naval Architecture and Ocean Eng. |
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| Abstract: | The computation of oscillatory pressure and impact pressure for two-dimensional bodies with arbitrary shapes is described.Considering the effect of piling-up of water and the variation of immersed shape,the valuation of impact pressure on the two-dimensional body during vertical water-entry at a constant velocity is simplified as a series of problems of flow around body.To solve these problems, the multi coefficient conformal transformation technique is used.For two typical sections of ship hull, of which one is the midship section of a fishing vessel, the other is at the bow of a container ship, the oscillatory pressure and impact pressure are calculated, and the diagrams of pressure distribution along the section's contour are obtained for the different drafts or frequencies.Some numerical results and related conclusions are presented. |
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| Keywords: | two-dimensional bodies impact pressure oscillation pressure conformal coordinate transformation |
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