| 近自由面细长体的振荡问题 |
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| 引用本文： | 蔡泽伟.近自由面细长体的振荡问题[J].宁波大学学报(教育科学版),1988(2). |
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| 作者姓名： | 蔡泽伟 |
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| 作者单位： | 宁波大学 |
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| 摘 要： | 本文引进细长体的假定,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,对物体作了适当近似以后,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,本文数值计算了细长体的水动力导数,给出了结果。
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| 关 键 词： | 自由面 振荡 组合 边界元方法 |
The Oscillating Problem of a Slender Body near Free Surfaee |
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| Cai Zewei.The Oscillating Problem of a Slender Body near Free Surfaee[J].Journal of Ningbo University(Educational Science Edition),1988(2). |
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| Authors: | Cai Zewei |
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| Institution: | Ningbo University |
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| Abstract: | Based on the slender-body assumption, the flow problem of a 3-D body is approximated to a set of unsteady 2-D ones. The effects of the all upstream sections(i.e."memory effects") is presented by integration. Under the linear theory presupposition, the oscillating problem of a slender-body is resolved to a wavemaking and an oscillating one according to the body boundary condition, the analytic expression of oscillating potential combined by wavemaking one is derived. As an example, the hydrodynamic derivations of a slender-body of revolution are calculated. |
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| Keywords: | Free surface Oscillation Combination Boundary element method |
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