干旱区生态环境知识资源中心(Arid): Modeling the inhibition effect of straw checkerboard barriers on wind-blown sand

Arid

DOI	10.5194/esurf-11-167-2023
	Modeling the inhibition effect of straw checkerboard barriers on wind-blown sand
	Huang, Haojie
通讯作者	Huang, HJ
来源期刊	EARTH SURFACE DYNAMICS
ISSN	2196-6311
EISSN	2196-632X
出版年	2023
卷号	11 期号:2 页码:167-181
英文摘要	Straw checkerboard barriers (SCBs) are usually laid to prevent or delaydesertification caused by eolian sand erosion in arid and semiarid regions. Understanding the impact of SCBs and their laying length on eolian sand erosion is of great significance to reduce damage and laying costs. In this study, a three-dimensional wind-blown-sand model in the presence of SCBs was established by introducing the splash process and equivalent sand barriers into a large-eddy simulation airflow. From this model, the inhibition effect of SCBs on wind-blown sand was studied qualitatively, and the sensitivity of eolian sand erosion to the laying length was investigated. The results showed that the decrease in the wind speed in the SCB area oscillates along the flow direction. Moreover, the longer the laying lengths are, the lower the wind speed and the sand transport rate in the stable stage behind SCBs will be. We further found that the concentration of sand particles near the side of SCBs is higher than that in its central region, which is qualitatively consistent with previous research. Our results also indicated that whether the wind speed will decrease below the impact threshold or the fluid threshold is the key factor affecting whether sand particles can penetrate the SCBs and form stable wind-blown sand behind the SCBs under the same conditions. Although our model does not include the collision between sand particles and SCB walls, which makes the suppression of wind-blown sand by SCBs obtained from the current model conservative, our research still provides theoretical support for the minimum laying length of SCBs in anti-desertification projects.
类型	Article
语种	英语
开放获取类型	gold, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000947756700001
WOS关键词	NONHYDROSTATIC ATMOSPHERIC SIMULATION ; PREDICTION SYSTEM ARPS ; LARGE-EDDY SIMULATION ; FIELD OBSERVATIONS ; BOUNDARY-LAYER ; PART II ; FLOW ; SALTATION ; PARTICLES ; EROSION
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395876
推荐引用方式 GB/T 7714	Huang, Haojie. Modeling the inhibition effect of straw checkerboard barriers on wind-blown sand[J],2023,11(2):167-181.
APA	Huang, Haojie.(2023).Modeling the inhibition effect of straw checkerboard barriers on wind-blown sand.EARTH SURFACE DYNAMICS,11(2),167-181.
MLA	Huang, Haojie."Modeling the inhibition effect of straw checkerboard barriers on wind-blown sand".EARTH SURFACE DYNAMICS 11.2(2023):167-181.

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