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)
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
|
Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
|
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 / 渦励振 / 2円柱 / 数値計算 / 並列2円柱 / 1質点2自由度 / 2円柱の衝突 / スクルートン数 / CFD / アメリカ |
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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Report
(4 results)
Research Products
(9 results)