2014 Fiscal Year Final Research Report
Numerical computation for flow-induced vibration and fluid forces of two close circular cylinders
Project/Area Number |
24560991
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Naval and maritime engineering
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Research Institution | Nihon University |
Principal Investigator |
KONDO Norio 日本大学, 理工学部, 准教授 (90178418)
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Project Period (FY) |
2012-04-01 – 2015-03-31
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Keywords | 接近した2円柱 / 直列配置 / 並列配置 / 数値シミュレーション |
Outline of Final Research Achievements |
We present numerical results for hydrodynamic vibrations of two close circular cylinders, which are mounted in a uniform flow. Two circular cylinders are assumed as each rigid body, and the circular cylinders are supported by damper-spring systems in in-line and cross-flow directions. In our computations, the gap ratio between the centers of two circular cylinders is set as 2 or 3 which is smaller than the critical gap ratio of two stationary circular cylinders. In addition, the Scruton number is given by 0.99. Vibration amplitudes in the in-line and cross-flow directions of the circular cylinders are computed by a third-order upwind finite element scheme and the numerical results are discussed in detail.
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Free Research Field |
数値流体力学
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