A HYBRID APPROACH COMBINING EXPERIMENT AND NUMERICAL SIMULATION BASED ON A VORTEX INDUCED VIBRATION OF A CIRCULAR CYLINDER
This paper presents a hybrid approach combining test with Computational Fluid Dynamics (CFD) for investigation on the aerodynamic forces based on a vortex-induced vibration (VIV) of a circular cylinder. The circular cylinder and the flow field are considered as two substructures of a system. The circular cylinder motion is obtained through a wind tunnel test of the VIV in advance of numerical simulation,and is considered as a known cylinder boundary condition and applied to the flow field. Only the flow field with prior-known moving cylinder boundary is then numerically simulated by the CFX code. The transient aerodynamic coefficients of the circular cylinder with a predetermined motion are obtained based on the numerical simulation. To verify the feasibility and accuracy of this proposed hybrid approach,the transient aerodynamic coefficients are applied to a single degree of freedom model (SDOF) of the circular cylinder to calculate the cylinder vibration. The comparison is carried out between the oscillation responses of the circular cylinder obtained by the calculated (SDOF model) and experimental results,and the result indicates that the hybrid approach can accurately simulate the transient aerodynamic coefficients of the circular cylinder.
Vortex-induced vibration Hybrid approach Computational fluid dynamics (CFD) Circular cylinder Aerodynamic force
Wen-Li Chen Hui Li Feng-Chen Li Jin-Ping Ou
School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,P.R. China School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,P.R.China School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,P.R. China School of Civil
国际会议
The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)
广州
英文
234-240
2010-12-01（万方平台首次上网日期，不代表论文的发表时间）