| 発表年月日 | 2012 |
|---|---|
| 発表テーマ | CFD Approach to Flow-Induced Vibrations of Tandemly Placed Circular Cylinders |
| 会議名 | 7TH INTERNATIONAL SYMPOSIUM ON MEASUREMENT TECHNIQUES FOR MULTIPHASE FLOWS |
| 主催者 | AMER INST PHYSICS |
| 発表形式 | その他 |
| 開催期間 | 2012 ～ 2012 |
| 発表者・共同発表者 | Naoki Nishikawa,Satoshi Someya,Koji Okamoto |
| 概要 | In the present study, we numerically examined the vibration characteristics of two cylinders which were placed tandemly in close vicinity of each other. The center-to-center pitch between the cylinders was four times the diameter of the cylinders. The cylinders were modeled as rigid bodies with two degrees-of-freedom in the simulation. The vibration frequencies of the cylinders were calculated, with the reduced velocity being varied. The vortex formation process was observed with regard to reduced velocity and structural damping. Also, the effects of the reduced velocity of the flow, the eigenfrequency of the cylinder, and the structural damping of the cylinder on the vibration response were discussed. A comparison was made between numerical results and the experimental ones obtained by means of the high-speed particle image velocimetry (Dynamic PIV) measurement. |
| researchmap用URL | http://jglobal.jst.go.jp/detail.php?from=API&JGLOBAL_ID=201302225197175237 |