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摘要:
The hydrodynamic dispersion is an important factor influencing the reactive solute transport in the porous media, and many previous studies assumed that it linearly varied with the average velocity of the groundwater flow. Actually, such linear relationship has been challenged by more and more experimental observations, even in homogeneous media. In this study, we aim to investigate the relationship between hydrodynamics dispersion and the flow velocity in different types of porous media through a laboratory-controlled experiment. The results indicate that (1) the dispersion coefficient should not be a linear function of the flow velocity when the relationship between the flow velocity and the hydraulic gradient can be described by Darcy's law satisfactorily;(2) Power function works well in describing the dispersion coefficient changing with the flow velocity for different types of porous media, and the power value is between 1.0-2.0 for different particle sizes.
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篇名 Experimental study on the velocity-dependent dispersion of the solute transport in different porous media
来源期刊 地下水科学与工程:英文版 学科 工学
关键词 SOLUTE transport POROUS media Flow VELOCITY DISPERSION COEFFICIENT
年,卷(期) dxskxygcywb,(2) 所属期刊栏目
研究方向 页码范围 106-114
页数 9页 分类号 TV
字数 语种
DOI
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研究主题发展历程
节点文献
SOLUTE
transport
POROUS
media
Flow
VELOCITY
DISPERSION
COEFFICIENT
研究起点
研究来源
研究分支
研究去脉
引文网络交叉学科
相关学者/机构
期刊影响力
地下水科学与工程:英文版
季刊
2305-7068
河北省石家庄市中华北大街268号
出版文献量(篇)
277
总下载数(次)
0
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