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Hydrodynamic coefficients of a floating, truncated vertical cylinder in shallow water

机译:浅水中漂浮的,截断的垂直圆柱体的水动力系数

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摘要

The paper seeks to apply the methodology of matched asymptotic expansions to obtain analytical solutions for hydrodynamic properties of a circular cylindrical platform (truncated circular cylinder) in extremely shallow water. By matching potentials of the fluid flows outside and under the cylinder bottom with the inner flow near its edge the radiation problems are solved for heave, surge and pitch motions. Closed asymptotic formulae are derived for all hydrodynamic coefficients of the floating cylinder, which include the first-order terms in the gap height. The formulae are discussed and shown to compare well with numerical results published in literature.
机译:本文力求应用匹配渐近扩展的方法来获得极浅水中圆柱平台(截顶圆柱体)的流体力学特性的解析解。通过使在气缸底部外部和下方流动的势与在其边缘附近的内部流动相匹配,解决了波动,喘振和俯仰运动的辐射问题。对于浮动圆柱体的所有流体力学系数,得出了封闭的渐近公式,其中包括间隙高度中的一阶项。对这些公式进行了讨论并显示出可以与文献中公布的数值结果很好地进行比较。

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