干旱区生态环境知识资源中心(Arid): Simulating Airflow Around Flexible Vegetative Windbreaks

Arid

DOI	10.1029/2021JD034578
	Simulating Airflow Around Flexible Vegetative Windbreaks
	Liu, Rui; Zhang, Junjie; Yang, Xiaofan; Liu, Shaomin; Kang, Liqiang
通讯作者	Liu, SM (corresponding author), Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Fac Geog Sci, Beijing, Peoples R China.
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN	2169-897X
EISSN	2169-8996
出版年	2021
卷号	126 期号:19
英文摘要	Vegetative windbreaks play an important role in reducing soil erosion and sand storms, which are widely applied in arid/semiarid regions. An optimal design of vegetative windbreaks is essential in aeolian engineering practice. In this study, three-dimensional airflows around multiple arrangements of vegetative windbreaks were simulated using a modified Reynolds-Average Navier-Stokes (RANS)-based computational fluid dynamics (CFD) model, based on which, optimal designs of vegetative windbreaks were discussed. We proposed a correction factor in the source terms of the momentum and turbulent transport equations representing the effects due to the vibration of the vegetative windbreaks, which was further calibrated using both simulated and wind tunnel experimental results. Moreover, a quantitative expression of the correction factors associated with structural parameters of vegetative windbreaks was established and verified. For optimal designs to reduce wind erosion, a suite of numerical experiments was conducted to find the optimal height, leaf area density, and vegetation fraction of the vegetative windbreaks under different free-stream wind speeds. The results identified that under low free-stream wind speed (6.4 m/s), the optimal parameters are 9.0 cm, 0.45 cm(2)/cm(3), and 3.92%. Under moderate free-stream wind speed (8.0 m/s), those optimal parameters are 12.4 cm, 0.47 cm(2)/cm(3), and 3.92%. Under relatively high free-stream wind speed (10.8 m/s), the optimal parameters are 12.4 cm, 0.47 cm(2)/cm(3), and 8.00%. The results of the current study will aid in optimizing vegetative windbreak designs and preventing wind erosion in aeolian engineering.
英文关键词	vegetative windbreaks wind erosion computational fluid dynamics wind tunnel experiment flexibility
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000706310300006
WOS关键词	WIND-TUNNEL MEASUREMENTS ; ZERO-PLANE DISPLACEMENT ; LARGE-EDDY SIMULATION ; DRAG RELATIONSHIPS ; ROUGHNESS LENGTH ; TURBULENT-FLOW ; HEXI CORRIDOR ; CLOSURE-MODEL ; PART I ; CFD
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363893
作者单位	[Liu, Rui; Zhang, Junjie; Yang, Xiaofan; Liu, Shaomin; Kang, Liqiang] Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Fac Geog Sci, Beijing, Peoples R China; [Liu, Rui] Shanghai Normal Univ, Sch Environm & Geog Sci SEGS, Inst Urban Study, Shanghai, Peoples R China; [Liu, Rui] Shanghai Yangtze River Delta Urban Wetland Ecosys, Shanghai, Peoples R China
推荐引用方式 GB/T 7714	Liu, Rui,Zhang, Junjie,Yang, Xiaofan,et al. Simulating Airflow Around Flexible Vegetative Windbreaks[J]. 北京师范大学,2021,126(19).
APA	Liu, Rui,Zhang, Junjie,Yang, Xiaofan,Liu, Shaomin,&Kang, Liqiang.(2021).Simulating Airflow Around Flexible Vegetative Windbreaks.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,126(19).
MLA	Liu, Rui,et al."Simulating Airflow Around Flexible Vegetative Windbreaks".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 126.19(2021).