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中文摘要：
为了解串联双立管的涡激振动情况,基于完全动力相似,采用ANSYS/CFX针对大雷诺数串联双立管的涡激升力和脉动拖曳力以及圆柱绕流和流固耦合,基于物理模型分析串联双立管在不同雷诺数、不同间距下双立管的受力情况,结果表明,当两立管间距较大,采取圆柱绕流的方法代替流固耦合来模拟立管受力时,结果可信并偏安全。
英文摘要：
The vortex-induced vibration of the tandem risers at high Reynolds is studied using ANSYS / CFX based on the fully dynamic similarity criterion.The results of vortex-induced lift and drag force are analyzed.And the results of flow around circular cylinder simulation and the fluid-structure interaction simulation are compared.The computation is carried out for different center-to-center distances under different Reynolds numbers.The numerical results show that it is credible and safe to use flow around circular cylinder simulation to calculate the force of the risers if the distance is larger.
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