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工程力学  2012 

柱间有相对运动坐底圆柱群的绕射辐射分析

DOI: 10.6052/j.issn.1000-4750.2010.11.0827, PP. 63-70

Keywords: 圆柱群,相对运动,辐射,绕射,水动力相互作用

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Abstract:

圆柱群是深海海工建筑物的主要承力结构.目前对圆柱群进行的水动力分析大多考虑将圆柱群作为一个整体的情况,即柱群中各柱无相对运动;对于柱间有相对运动圆柱群的研究较少.为此,采用精确代数法研究柱间有相对运动坐底直立圆柱群的绕射-辐射问题.首先开展了柱群中各圆柱做给定单独运动的辐射分析;之后在有入射波浪的情况下,分析了各柱有相对运动圆柱群的绕射-辐射问题;进而求得各圆柱上的水动力、振动幅值等量.作为验证,先将退化情况的结果与已有文献进行了对比.进一步的计算结果表明,在某些波数下,分析中是否考虑柱间相对运动对结果影响较大.

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