Open loop control of vortex-induced vibration of a circular cylinder

• 来源期刊: 中国物理（英文版）
• 关键词: vortex-induced vibration open-loop control flow control Lorentz force
• 年，卷（期）: 2007,（4）
• 页码范围: 1077-1083
• 页数: 7页
• 语种: 英文

摘要

In this paper both numerical and experimental investigations have been carried out to suppress the vortex-induced vibration (VIV) of a circular cylinder in an electrically low-conducting fluid. The electromagnetic forces (Lorentz forces)in the azimuthal direction were generated through the mounted electrodes and magnets locally on the surface of the cylinder, which have been proved having an accelerating effect to the fluid on the surface of the cylinder. Results of computations are presented for synchronous vibration phenomenon of a cylinder at Re = 200, which are in good agreement with previous computational results. With the Lorentz forces loaded, the VIV of the cylinder has been suppressed successfully. Experimental results have also shown the same tendency and are in reasonable agreement with the numerical results.