Experimental study on flow field induced by internal solitary wave and load characteristics on pile sections at different depth
Experimental study on flow field induced by internal solitary wave and load characteristics on pile sections at different depth
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不同深度桩段内孤波流场及荷载特性试验研究
DOI：
10.1016/j.oceaneng.2019.106292
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发表时间：
2019-09
影响因子：
5
通讯作者：
Guo Haiyan
中科院分区：
文献类型：
--
作者：
Wang Fei;Sun Rui;Wang Chunxiao;Fu Qiang;Li Peng;Guo Haiyan
在密度分层的两层流体中产生了内孤立波。在整个水深范围内布置了由五个部分组成的圆柱形桩。应用PIV技术对内孤立波诱导的流场进行了测量。得到了三个截面上的力，这三个截面是在不同的层或在同一层中的不同深度，。根据流场和力的实验数据，计算了圆柱各截面的水动力系数C D和C M。得到了这些系数随Re和新定义的KC的变化趋势。流场信息、负荷特性和水动力系数在上、下层之间差异很大，在同一层内不同深度处几乎相同。建议在计算作用于不同层次结构物上的内孤立波力时，选用不同的经验系数。此外，内孤立波条件下的水动力系数变化趋势与波流联合条件下的水动力系数变化趋势具有一定的相似性。
Internal solitary waves were generated in a density stratified two-layer fluid. A cylindrical pile composed of five sections was arranged throughout the water depth. The flow field induced by internal solitary wave was measured by applying PIV technique. The forces on three of the sections, which were in different layers or at different depth in the same layer, were obtained. Based on the experimental data of flow field and forces, the hydrodynamic coefficients of C D and C M were calculated for each cylinder section. The variation trend of the coefficients with Re and newly defined KC were obtained. The flow field information, load characteristics and hydrodynamic coefficients are greatly different between the upper and lower layers, and almost the same at different depth in the same layer. It is suggested to select different empirical coefficients when calculating internal solitary wave force on the structure parts in different layers. Besides, the variation trend of hydrodynamic coefficient under the condition of internal solitary wave has some similarities to that under the condition of combined wave-current flow.
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影响因子：
3.6
作者：
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通讯作者：
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影响因子：
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作者：
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影响因子：
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