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首页> 外文会议>The proceedings of the twelfth (2002) international offshore and polar engineering conference (ISOPE-2002) >Steady Flow Patterns and Interactions around Vertical Cylinders
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Steady Flow Patterns and Interactions around Vertical Cylinders

机译：垂直圆柱周围的稳定流动模式和相互作用

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摘要

Vertical cylinders are commonly and widely used in offshore asrndolphin structures. In a multiple array of vertical cylinders, flowrnpatterns are very complex and interactive between cylinders.rnGenerally, the patterns are turbulent and non-linear depending onrnvarious factors. The space and flow velocity of upstream can affect onrnthe downstream body. In this study, the flow patterns around verticalrncylinders are investigated by experiment with various spaces betweenrncylinders and flow velocities. The interaction between cylinders isrnvery important to understand the complex behavior of flow and tornestimate the pressure field around the bodies. The pressure change isrnclosely related to the estimation of hydrodynamic loads on therncylinders. The pressures around the flow field are measured at twelvernholes. The experiment is conducted in a circulating water channel withrnvisualization system. The laser beam is used to reflect the image fromrnwater particles for recording. The cylinders are spaced from 1D to 5Drnwith various incoming flow velocities. From the study the consistentrntrends of pressure gradient around vertical cylinders are obtained. Thernresults can be applied in the understanding and design of multiple pilernarray structures.
机译：立式圆柱体广泛用于海上阿斯海豚结构中。在多个垂直圆柱体中，流动模式非常复杂，并且在圆柱体之间相互作用。通常，取决于各种因素，流动模式是湍流和非线性的。上游的空间和流速会影响下游主体。在这项研究中，通过对斜纹棉布之间的空间和流速进行实验，研究了垂直斜纹棉布周围的流动方式。汽缸之间的相互作用对于理解流动的复杂行为和扭曲物体周围的压力场非常重要。压力变化与泥浆上的水力负荷的估计密切相关。流场周围的压力是在十二孔处测量的。该实验在循环水通道可视化系统中进行。激光束用于反射水颗粒的图像以进行记录。气缸以各种传入流速从1D到5Drn隔开。通过研究得到了垂直圆柱周围压力梯度的一致趋势。该结果可用于理解和设计多个桩阵列结构。

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