experimentalinvestigationofflowpastacircularcylinderwithhydrophobiccoating

	experimentalinvestigationofflowpastacircularcylinderwithhydrophobiccoating
	Wen Jun 3; Hu Haibao 3; Luo Zhuangzhu 2; Zhang Zhaozhu 1
刊名	水动力学研究与进展英文版
	2018
卷号	030 期号:006 页码:992
ISSN号	1001-6058
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.
语种	英语
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/9179]
专题	中国科学院重庆绿色智能技术研究院
作者单位	1.中国科学院兰州化学物理研究所 2.中国科学院重庆绿色智能技术研究院 3.西北工业大学
推荐引用方式 GB/T 7714	Wen Jun,Hu Haibao,Luo Zhuangzhu,et al. experimentalinvestigationofflowpastacircularcylinderwithhydrophobiccoating[J]. 水动力学研究与进展英文版,2018,030(006):992.
APA	Wen Jun,Hu Haibao,Luo Zhuangzhu,&Zhang Zhaozhu.(2018).experimentalinvestigationofflowpastacircularcylinderwithhydrophobiccoating.水动力学研究与进展英文版,030(006),992.
MLA	Wen Jun,et al."experimentalinvestigationofflowpastacircularcylinderwithhydrophobiccoating".水动力学研究与进展英文版 030.006(2018):992.