粘性拡散を考慮したVortex-in-Cell法による振動円柱まわりの渦挙動と非定常空気力特性の解析
1998 年 63 巻 510 号 p. 51-59
詳細
1998 年 63 巻 510 号 p. 51-59
In order to understand physical mechanism of the vortex-induced vibration, the Vortex-in-Cell method, which incorporates viscous diffusion, is applied to unsteady flow and vortex motions around an oscillating circular cylinder. Firstly, we investigate the computational results of flows around a stationary circular cylinder in the range of the low Reynolds numbers and the accuracy of the present method are shown. Secondly various patterns of vortex formation around a forced oscillating circular cylinder are examined as a function of amplitudes and frequencies. Through the comparison with the previous experimental data, details of various modes of vortex motion are classified.
