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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference 2006 vol.4 pt.B: Fluid-Structure Interaction >TWO SIDE-BY-SIDE CANTILEVERED CYLINDERS IN A CROSS FLOW
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TWO SIDE-BY-SIDE CANTILEVERED CYLINDERS IN A CROSS FLOW

机译：横流中的两个并排的悬臂圆柱

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摘要

Three dimensional flow over two side-by-side cantilevered cylinders is numerically studied for understanding the complex wake interference behind the cylinder pair. The two cylinders stand on the ground. The lattice Boltzmann method with multiple relaxation time is used for the solution of three dimensional unsteady flow. The simulations are carried out with Reynolds number Re = 200, aspect ratio L/D =10 and four transverse pitch ratios : T/D = 1.2, 1.5, 2.0 and 3.0, where Re is defined by incoming velocity U, cylinder diameter D and kinetic viscosity v, L is cylinder span length and T is center to center spacing between the cylinder pair. Numerical results show that the wake patterns depend on not only T/D, but also the end flow conditions. Both the wake street and statistics of fluid force vary along the cylinder span considerably, indicating strong three dimensionality of the wake flows and their interaction.
机译：数值研究了两个并排悬臂圆柱上的三维流动，以了解圆柱对后面复杂的尾流干扰。两个圆柱体站在地面上。具有三次松弛时间的格子玻尔兹曼方法被用于求解三维非定常流动。用雷诺数Re = 200，纵横比L / D = 10和四个横向螺距比进行仿真：T / D = 1.2、1.5、2.0和3.0，其中Re由进来速度U，圆柱直径D和动粘度v，L为气缸跨度长度，T为气缸对之间的中心距。数值结果表明，尾流模式不仅取决于T / D，还取决于最终流动条件。尾流道和流体力统计数据沿汽缸跨度变化很大，这表明尾流具有很强的三维性及其相互作用。

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