| 引用本文: | 蔡泽伟,徐亦凡.近水面细长体的水动力导数数值计算1.[J].国防科技大学学报,2000,22(6):120-124.[点击复制] |
| CAI Zewei,XU Yifan.Numerical Solution to Hydrodynamic Derivatives of a Slender-Body Near Free Surface[J].Journal of National University of Defense Technology,2000,22(6):120-124[点击复制] |
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| 近水面细长体的水动力导数数值计算1 |
| 蔡泽伟1, 徐亦凡2 |
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(1.宁波大学建筑工程与环境学院，浙江 宁波 315211;2.海军潜艇学院，山东 青岛 266071)
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| 摘要: |
| 引进细长体的假定，把三维的流体运动问题化成了二维的非定常问题，前面剖面对后面剖面的干扰作用用积分表示，改善了切片理论。根据物面条件把整个问题的求解分解为兴波问题和振荡问题，而振荡问题可由兴波问题的适当组合表示出来。这样，大大简化了问题的求解。作为例子，本文用数值方法计算了细长回转体的水动力导数，给出了结果。 |
| 关键词: 振荡 水动力导数 细长物体 |
| DOI： |
| 投稿日期：2000-06-07 |
| 基金项目:浙江省自然科学基金(599119)项目 |
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| Numerical Solution to Hydrodynamic Derivatives of a Slender-Body Near Free Surface |
| CAI Zewei1, XU Yifan2 |
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(1.Faculty of Architecture, Engineering and Environment, Ningbo University 315211;2.Navy Submarine College ,Qingdao 266071)
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| Abstract: |
| Based on the slender-body assumption, the 3-D flow is approximated to a set of unsteady 2-D ones. The effects of the all upstream sections (i.e. “memory effects”) are presented by integration. The whole problem can be devided into a wavemaking and an oscillating one according to the body boundary condition, the analytical expression of oscillating problem combined by wavemaking one is derived. As an example, the hydrodynamic derivatives of a slender-body of revolution are calculated. |
| Keywords: oscillation hydrodynamic derivatives slender-body |
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