Numerical computation for vortex-indued vibration and fluid forces of two staggered circular cylinders

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K06623
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Naval and maritime engineering
• Research Institution: Nihon University
• Principal Investigator: KONDO Norio 日本大学, 理工学部, 教授 (90178418)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: ２円柱 / くい違い配置 / 流力振動 / ２自由度モデル / 数値計算 / FEM

Outline of Final Research Achievements

When two circular cylinders are set as the staggered arrangements in smooth flow, it is found that the fluid forces acting on the two cylinders or the vortex-induced vibrations of the cylinders are different due to spacing between the cylinders. A study of the vortex-induced vibrations of the cylinders were achieved due to spacing ratios of 2 and 3 between the cylinders.
In this study. we focused on the low Scruton number in order to achieve the computation for the vortex-induced vibrations of the close cylinders, so we could accurately obtain the numerical results even in such the low Scruton number.

Free Research Field

数値流体力学