气候变化领域集成服务门户(CCPortal): Measuring velocity of water flow within a gravel layer using an electrolyte tracer method with a Pulse Boundary Model

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DOI	10.1016/j.jhydrol.2013.07.025
	Measuring velocity of water flow within a gravel layer using an electrolyte tracer method with a Pulse Boundary Model
	Lei, Tingwu; Yan, Yan; Shi, Xiaonan; Chuo, Ruiyuan; Zhao, Jun
通讯作者	Lei, TW (通讯作者)
发表日期	2013
ISSN	0022-1694
EISSN	1879-2707
起始页码	37
结束页码	44
卷号	500
英文摘要	Water flow within a gravel layer is of great interest in many studies and applications. The electrolyte tracer method, based on the solution to the governing partial differential equation of solute transport in water flow under a pulse boundary condition, the Pulse Boundary Model, was suggested to measure the velocity of water flow within a gravel layer. Laboratory experiments were made to illustrate the measurement method. The dye tracer method was used to make comparative measurements. Gravel of about 2 cm in diameter was placed to a 5 cm thick layer in a flume of 4 m long, 20 cm wide and 50 cm deep. Flow velocities were measured at locations of 0.3, 0.6, 0.9, 1.2 and 1.5 m from the electrolyte tracer injector, which was I m from the water inlet, under 3 flow rates of 3, 6 and 12 L/min and for 3 slope gradients of 4 degrees, 8 degrees and 12 degrees. Highly concentrated KCl solution was injected into the water flow within the gravel layer through a funnel. The solute transport processes were registered by the measurement system, as detected by the ion-sensitive sensors, before being used for flow velocity estimations at different locations. The measured flow velocity increased with slope gradient but was similar under the different flow rates used. The velocity values measured by the Pulse Boundary Model were about 20-50% lower than those estimated by the dye tracer method although they were strongly linearly correlated. The measured velocity values were in about the same order of magnitude as those reported in the literature. Therefore, the Pulse Boundary Model electrolyte tracer method was demonstrated to be rational and applicable for measuring the velocity of water flow within a gravel layer. (C) 2013 Elsevier B.V. All rights reserved.
关键词	OVERLAND-FLOW MEAN VELOCITY ROUGHNESS SURFACE
英文关键词	Flow velocity; Gravel; Electrolyte method; Pulse model; Flume experiment
语种	英语
WOS研究方向	Engineering ; Geology ; Water Resources
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000324562700004
来源期刊	JOURNAL OF HYDROLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258184
推荐引用方式 GB/T 7714	Lei, Tingwu,Yan, Yan,Shi, Xiaonan,et al. Measuring velocity of water flow within a gravel layer using an electrolyte tracer method with a Pulse Boundary Model[J]. 中国科学院青藏高原研究所,2013,500.
APA	Lei, Tingwu,Yan, Yan,Shi, Xiaonan,Chuo, Ruiyuan,&Zhao, Jun.(2013).Measuring velocity of water flow within a gravel layer using an electrolyte tracer method with a Pulse Boundary Model.JOURNAL OF HYDROLOGY,500.
MLA	Lei, Tingwu,et al."Measuring velocity of water flow within a gravel layer using an electrolyte tracer method with a Pulse Boundary Model".JOURNAL OF HYDROLOGY 500(2013).