干旱区生态环境知识资源中心(Arid): Experimental investigation of the diameter and length effects of the dendritic, bottomless, extended structure on reservoir sediment removal efficiency by flushing

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DOI	10.1016/j.jher.2022.09.002
	Experimental investigation of the diameter and length effects of the dendritic, bottomless, extended structure on reservoir sediment removal efficiency by flushing
	Haghjouei, Hadi; Rahimpour, Majid; Qaderi, Kourosh; Kantoush, Sameh A.; Beiramipour, Sepideh
通讯作者	Haghjouei, H
来源期刊	JOURNAL OF HYDRO-ENVIRONMENT RESEARCH
ISSN	1570-6443
EISSN	1876-4444
出版年	2022
卷号	45 页码:15-28
英文摘要	Sedimentation in front of a dam is the main obstacle against reservoir sustainability. Due to the limited avail-ability of suitable new dam sites, the ramifications of inefficient sediment management are associated with socio-economic concerns and environmental issues. Most of the existing sediment management techniques are unfa-vorable for arid and semi-arid regions due to their impacts on available water storage and power generation. Therefore, pressure flushing is an economical desilting method as it releases little water through the bottom outlet. However, one of the main disadvantages of pressurized flushing is limited sediment removal near the bottom outlet. In this paper, the impacts of a dendritic, bottomless, and extended (DBE) structure were inves-tigated to develop the scour cone to a broader area. Several experiments were carried out with four different diameters (125, 160, 200, and 250 mm), four different lengths (30, 50, 80, and 110 cm), and three discharge rates (12.5, 15, and 18 L/s), to identify the dimensions of the extended structure with the most efficient oper-ation. The results indicated that the DBE structure with a length dimensionless index of LDBE/Do = 10, a diameter dimensionless index of DDBE/Do = 1.14, and an outflow discharge dimensionless index of Fro = 1.82, yielded a 36.55-fold increase in the sediment flushing cone dimensions and sediment removal efficiency compared to a reference test. Finally, a dimensionless equation is presented for calculating the sediment flushing cone di-mensions, according to a statistical analysis of the results. Two diagrams are provided to illustrate the interre-lationship between the distance limits of scour, length, and diameter of the structure and outlet discharges.
英文关键词	Pressurized flushing Sediment removal efficiency Sediment flushing cone Dendritic bottomless extended structure
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000868160800001
WOS关键词	MANAGEMENT ; OUTLET
WOS类目	Engineering, Civil ; Environmental Sciences ; Water Resources
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393472
推荐引用方式 GB/T 7714	Haghjouei, Hadi,Rahimpour, Majid,Qaderi, Kourosh,et al. Experimental investigation of the diameter and length effects of the dendritic, bottomless, extended structure on reservoir sediment removal efficiency by flushing[J],2022,45:15-28.
APA	Haghjouei, Hadi,Rahimpour, Majid,Qaderi, Kourosh,Kantoush, Sameh A.,&Beiramipour, Sepideh.(2022).Experimental investigation of the diameter and length effects of the dendritic, bottomless, extended structure on reservoir sediment removal efficiency by flushing.JOURNAL OF HYDRO-ENVIRONMENT RESEARCH,45,15-28.
MLA	Haghjouei, Hadi,et al."Experimental investigation of the diameter and length effects of the dendritic, bottomless, extended structure on reservoir sediment removal efficiency by flushing".JOURNAL OF HYDRO-ENVIRONMENT RESEARCH 45(2022):15-28.