Model experiments on wave elevation around a four-cylinder structure
Model experiments on wave elevation around a four-cylinder structure
复制标题
四筒结构周围波高模型试验
DOI：
10.1016/j.oceaneng.2014.11.031
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发表时间：
2015-03
影响因子：
5
通讯作者：
Huang Yifan
中科院分区：
文献类型：
--
作者：
Cong Peiwen;Gou Ying;Teng Bin;Zhang Kang;Huang Yifan
柱支承结构是近海工业中常用的结构形式。支撑柱附近自由面高程的预测对结构安全和气隙设计具有重要意义。由于张力腿平台通常由四根立柱支撑，因此对规则波对四柱结构的绕射进行了模型试验研究。这些实验是为了在靠近圆柱体表面的多个位置测量自由表面高程。通过对测量数据的分析，得到了一次和二次谐波高程的幅值。为了验证绕射理论在预测自由面高程方面的有效性，将实验结果与数值结果进行了比较，结果表明，二阶绕射理论对自由面高程的预测是有效的，即使是在陡峭的波浪中也是如此。实验中还对近陷阱这一重要现象进行了研究。对于特定的入射波频，可以在结构内部观察到近驻波运动。不同的波头也被用来描述一阶和二阶近陷现象与入射波方向的关系。
Column-supported structures are commonly used in offshore industries. The prediction of the free surface elevation in the vicinity of the supporting columns is important for structural safety and air gap design. Because the tension leg platform is normally supported by four vertical columns, model experiments are carried out to study the diffraction of regular waves by a four-cylinder structure. The experiments are designed to measure the free surface elevation at multiple locations close to the cylinder surfaces. By analysing the measured data, the amplitudes of the first-order and second-order harmonic wave elevations are obtained. To validate the diffraction theory with regard to predicting the free surface elevation, the experimental and numerical results are compared and show that the second-order diffraction theory is effective in predicting the free surface elevation, even for steep waves. The important phenomenon of near-trapping is also investigated in the experiment. For a specific incident wave frequency, near-standing wave motion can be observed inside the structure. Different wave headings are also investigated to describe the dependence of first-order and second-order near-trapping phenomena on the incident wave direction.
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DOI：
10.1098/rsta.1997.0027
发表时间：
1997-03
期刊：
Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
影响因子：
--
作者：
Eatock Taylor;G. Wu
通讯作者：
Eatock Taylor;G. Wu
影响因子：
4.3
作者：
B. Teng;R. E. Taylor
通讯作者：
B. Teng;R. E. Taylor
影响因子：
0.8
作者：
G. Contento;F. D'Este;M. Sicchiero;R. Codiglia;M. Calzá
通讯作者：
G. Contento;F. D'Este;M. Sicchiero;R. Codiglia;M. Calzá
影响因子：
4.3
作者：
B. Molin
通讯作者：
B. Molin
影响因子：
3.6
作者：
W. Moubayed;A. N. Williams
通讯作者：
W. Moubayed;A. N. Williams