串列双圆柱流致振动数值模拟  

Numerical Simulation of Flow-induced Vibration of Tandem Circular Cylinders

作　　者：及春宁[1] 杨立红[1] 黄继露 刘爽[1] 

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300072

出　　处：《港工技术》2014年第3期1-6,共6页Port Engineering Technology

基　　金：天津市青年科学基金资助项目(12JCQNJC02600);国家自然科学基金资助项目(50809047)

摘　　要：基于开源程序OpenFOAM和动网格技术,利用切应力平衡法建立水流作用下的海上风电基础局部冲刷数学模型。通过模拟结果与实验数据的对比发现,所建立的冲刷数学模型能够合理反映圆柱型单桩基础周围的水流结构,冲刷深度与实验结果吻合较好。Numerical simulation is carried out for the flow-induced vibrations（FIV）of the elastically-mounted tandem cylinders in laminar flow by using immersed boundary method in the process of harvesting VIVACE ocean current energy（Vortex Induced Vibration Aquatic Clean Energy）. The research results show the crosscurrent displacement of the upstream and downstream cylinders,vortex shedding frequency,lift-drag coefficient and the curve of the phase difference between lift force and displacement being affected by reduced flow velocity. In addition,analysis is made for the influence of cylinder＇s spacing ratio on the hydrodynamic and FIV response characteristics of the tandem circular cylinders.

关 键 词：串列双圆柱 流致振动 浸入边界法 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]