Experimental investigation of flow past a circular cylinder with hydrophobic coating
文献类型：期刊论文
| 作者 | Wen, Jun1; Hu, Hai-bao1; Luo, Zhuang-zhu2; Zhang, Zhao-zhu3 |
| 刊名 | JOURNAL OF HYDRODYNAMICS
 |
| 出版日期 | 2018-12-01 |
| 卷号 | 30期号:6页码:992-1000 |
| ISSN号 | 1001-6058 |
| 关键词 | Hydrophobic coating drag reduction vortex structures separated flows |
| DOI | 10.1007/s42241-018-0124-4 |
| 通讯作者 | Hu, Hai-bao(huhaibao@nwpu.edu.cn) |
| 英文摘要 | A series of experiments are performed in a gravitational low-speed water tunnel to investigate the influence of the hydrophobic coating on the flow past a circular cylinder. The mean velocity and turbulence intensity profiles behind the cylinders are measured using the hot-film anemometer while the separation angles are obtained with the flow visualization technology. For the Reynolds number lower than 3 800, the hydrophobic coatings are in the Cassie state, the velocity deficit and the turbulence intensity in the wake of the hydrophobic cylinders are lower than those of the smooth cylinders which implies the drag reduction effect of the hydrophobic coatings. When the Reynolds number becomes higher than 6 600, the hydrophobic coatings turn into the Wenzel state. Through decomposing the velocity data in the turbulent wake into different scales based on the orthogonal wavelet transform, it is found that the total turbulence intensity in the wake of the hydrophobic cylinders becomes almost the same as in the wake of the smooth cylinders while the intensity of the large scales of vortex components in the wake of the hydrophobic cylinders is still lower. Furthermore, the separation angles show the same trend as a function of the Reynolds number but always take smaller values for the hydrophobic cylinders. |
| 资助项目 | Innvovation Foundation of Maritime Defense Technologies Innovation Center ; Fundamental Research Funds for the Central Universities[3102018gxc007] |
| WOS研究方向 | Mechanics |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000452062300002 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/7181]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Hu, Hai-bao |
| 作者单位 | 1.Northwestern Polytech Univ, Sch Marine Sci & Technol, Xian 710072, Shaanxi, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 3.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wen, Jun,Hu, Hai-bao,Luo, Zhuang-zhu,et al. Experimental investigation of flow past a circular cylinder with hydrophobic coating[J]. JOURNAL OF HYDRODYNAMICS,2018,30(6):992-1000. |
| APA | Wen, Jun,Hu, Hai-bao,Luo, Zhuang-zhu,&Zhang, Zhao-zhu.(2018).Experimental investigation of flow past a circular cylinder with hydrophobic coating.JOURNAL OF HYDRODYNAMICS,30(6),992-1000. |
| MLA | Wen, Jun,et al."Experimental investigation of flow past a circular cylinder with hydrophobic coating".JOURNAL OF HYDRODYNAMICS 30.6(2018):992-1000. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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