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首页> 外文会议>ICCCI 2010;International conference on computer and computational intelligence >Forces and Pressure Investigation of Steady and Oscillating Cables with Rivulets via Numerical Method
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Forces and Pressure Investigation of Steady and Oscillating Cables with Rivulets via Numerical Method

机译：用数值方法研究带铆钉的稳定振荡电缆的力和压力。

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Upper rivulet plays an important role when Rain-wind induced vibration happens. In present work an arch attachment on cylinder face will be modeled to simulate the rivulet. Fluid field around the cylinder is computed using Finite Volume Method with Large Eddy Simulation method closing turbulent model. Dynamic mesh is applied to realize self-excited motion of the cylinder. Then aerodynamic force acting on the cylinder and surface pressure are fully studied. The result shows that both statistic forces and Strouhal Numbers change a lot when the rivulet attachment is at different positions and the cylinder oscillating or not also have remarkable affection on these properties. It appears that the max value of average drag force can be doubled from the minimum, and the lift force fluctuations are far more than that Existence of the rivulet attachment also changes the pressure distribution on the cylinder face, and the attachment at certain position greatly improves the pressure level at the leading edge of the cylinder.
机译：当雨风引起的振动发生时，上小溪起着重要的作用。在当前的工作中，将对圆柱面上的拱形附件进行建模以模拟小溪。圆柱体周围的流场是使用有限体积法和大涡模拟方法来计算湍流模型的。应用动态网格实现圆柱的自激运动。然后充分研究了作用在气缸上的空气动力和表面压力。结果表明，当小钉附件位于不同位置并且圆柱体振动与否时，统计力和斯特劳哈尔数都发生了很大变化。看来，平均阻力的最大值可以从最小值增加一倍，而提升力的波动远不止于此。铆钉附件的存在也改变了气缸面上的压力分布，并且在特定位置的附件大大改善了气缸前缘的压力水平。

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