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| Simulations of flow past a square cylinder with a flexible plate based on fluid-solid coupling method |
| Received:August 02, 2015 Revised:December 10, 2015 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201701017 |
| KeyWord:fluid-structure interaction a flexible plate the drag coefficient the rms of lift coefficient St number |
| Author | Institution |
| 汪健生 |
天津大学 中低温热能高效利用教育部重点实验室 机械工程学院, 天津 |
| 徐亚坤 |
天津大学 中低温热能高效利用教育部重点实验室 机械工程学院, 天津 |
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| Abstract: |
| The investigation of flow features on the three-dimensional square cylinder with a flexible plate is performed by the two way fluid-solid coupling method.The variation law of the drag coefficient,lift coefficient and Strouhal number of the square cylinder with a flexible plate are probed,which are compared with that of the single square cylinder.The numerical results show that the drag coefficient of the square cylinder reduces by 34.6% and its amplitude decreases greatly by adding a flexible plate in the region of the wake flow.Meantime,the RMS of the lift coefficient of square cylinder with a flexible plate reduces by 84.8% accompanying the drastic decrease of flow field pulsation.In addition,the Strouhal number reduces by 79.5%.The present results indicate that the vortex shedding can be effectively suppressed by adding a flexible plate at the back of the square cylinder,which results in the improvement of the wake flow characteristics of three-dimensional square cylinder. |