CCPortal
DOI10.5194/acp-22-9525-2022
Impact of turbulence on aeolian particle entrainment: results from wind-tunnel experiments
Zhang, Jie; Li, Guang; Shi, Li; Huang, Ning; Shao, Yaping
发表日期2022
ISSN1680-7316
EISSN1680-7324
起始页码9525
结束页码9535
卷号22期号:14页码:11
英文摘要We hypothesize that large eddies play a major role in the entrainment of aeolian particles. To test this, wind-tunnel experiments are carried out to measure the particle entrainment rate for various sizes and flow conditions. Wind-tunnel flows are usually neutrally stratified with no large eddies, which are typically seen in convective atmospheric boundary layers. Here, a novel technique is applied, by deploying a piece of randomly fluttering cloth, to generate large eddies similar to convective eddies, here referred to as quasi-convective turbulence. The characteristics of quasi-convective turbulence are analyzed with respect to neutral turbulence in the Monin-Obukhov similarity framework, and the probability distributions of surface shear stress are examined. We show that for a given mean flow speed and in comparison with neutral flow conditions, quasi-convective turbulence increases the surface shear stress and alters its probability distribution and hence substantially enhances the entrainment of sand and dust particles. Our hypothesis is thus confirmed by the wind-tunnel experiments. We also explain why large eddies are important to aeolian entrainment and transport.
学科领域Environmental Sciences; Meteorology & Atmospheric Sciences
语种英语
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号WOS:000828706400001
来源期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/273576
作者单位Lanzhou University; Lanzhou University; Lanzhou University; Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne; University of Cologne
推荐引用方式
GB/T 7714
Zhang, Jie,Li, Guang,Shi, Li,et al. Impact of turbulence on aeolian particle entrainment: results from wind-tunnel experiments[J],2022,22(14):11.
APA Zhang, Jie,Li, Guang,Shi, Li,Huang, Ning,&Shao, Yaping.(2022).Impact of turbulence on aeolian particle entrainment: results from wind-tunnel experiments.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(14),11.
MLA Zhang, Jie,et al."Impact of turbulence on aeolian particle entrainment: results from wind-tunnel experiments".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.14(2022):11.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Zhang, Jie]的文章
[Li, Guang]的文章
[Shi, Li]的文章
百度学术
百度学术中相似的文章
[Zhang, Jie]的文章
[Li, Guang]的文章
[Shi, Li]的文章
必应学术
必应学术中相似的文章
[Zhang, Jie]的文章
[Li, Guang]的文章
[Shi, Li]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。