Simulation and Experiments of Aerated Flow in Curve-Connective Tunnel with High Head and Large Discharge

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地灾害与地表过程重点实验室

	Simulation and Experiments of Aerated Flow in Curve-Connective Tunnel with High Head and Large Discharge
	Li, Shuai1 ; Zhang, Jian-min 1; Xu, Wei-lin 1; Chen, Jian-gang2 ; Peng, Yong 1; Li, Jun-ning 1; He, Xiao-long 1
刊名	INTERNATIONAL JOURNAL OF CIVIL ENGINEERING
	2016
卷号	14 期号:1A 页码:23-33
关键词	Curve-connective tunnel Aerated flow Physical model Turbulent model Cross-section aerator
ISSN号	1735-0522
通讯作者	Zhang, Jian-min
英文摘要	The cavitation erosion induced by high-speed flow is very prominent in tunnel with high head and large discharge. Air entrainment is an effective technology to solve this problem. In this study, numerical simulation and physical model were applied to the comparative study of air-water flows in curve-connective tunnel including ogee segment, steep segment and anti-arc segment, where three aerators were set up for protecting the bottom-floor and sidewall. The flow pattern, aeration cavity, air concentration and pressure distribution were obtained and the calculated results agree with the Experimental data. The hydraulic characteristic and aeration effect of the flows in a curve-connective tunnel are analyzed specific to the bottom aerator and the whole cross-section aerator, respectively. When the bottom aerators were only set up, the flows appeared the black water triangle zone near sidewalls in curve-connective segment. The air concentration was observably improved on sidewalls downstream of the ogee section while the added lateral aeration facility on bottom aerator. Thus, the black water triangle zone disappeared so that the floor and sidewalls were protected so well. These results indicated that the whole cross-section aerator not only weaken the backwater in bottom aeration cavity and then increase the length of the bottom cavity but also benefit the protection of sidewalls.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Civil
研究领域[WOS]	Engineering
关键词[WOS]	SPILLWAY ; EQUATIONS ; DNS
收录类别	SCI
语种	英语
WOS记录号	WOS:000382909600003
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/17633]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
作者单位	1.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, 24 South Sect 1,Yihuan Rd, Chengdu, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, 9,Block 4,Renminnanlu Rd, Chengdu, Peoples R China
推荐引用方式 GB/T 7714	Li, Shuai,Zhang, Jian-min,Xu, Wei-lin,et al. Simulation and Experiments of Aerated Flow in Curve-Connective Tunnel with High Head and Large Discharge[J]. INTERNATIONAL JOURNAL OF CIVIL ENGINEERING,2016,14(1A):23-33.
APA	Li, Shuai.,Zhang, Jian-min.,Xu, Wei-lin.,Chen, Jian-gang.,Peng, Yong.,...&He, Xiao-long.(2016).Simulation and Experiments of Aerated Flow in Curve-Connective Tunnel with High Head and Large Discharge.INTERNATIONAL JOURNAL OF CIVIL ENGINEERING,14(1A),23-33.
MLA	Li, Shuai,et al."Simulation and Experiments of Aerated Flow in Curve-Connective Tunnel with High Head and Large Discharge".INTERNATIONAL JOURNAL OF CIVIL ENGINEERING 14.1A(2016):23-33.