每年專案
摘要
The arrival time of solutes from the source to a prescribed compliance boundary is a global transport quantity that is of practical interest in many applications, such as risk assessment for environmentally sensitive sites in regulatory analyses. Estimates of uncertainty are necessary and can play an important role in the decision-making process. The objective of this work is therefore to quantify the variability of solute travel time in individual fractures with spatially variable apertures. The variability of solute transport in fractures is largely determined by the heterogeneity of the apertures of naturally occurring rock fractures. To model solute transport, the fracture apertures and flow fields are considered as spatial random functions. Using the relationship between the two-dimensional depth-averaged solute conservation equation and the Fokker-Planck equation, it is possible to formulate the solute convection velocity in such a way that a general expression for the solute travel time variance can be developed by taking into account the effects of the variation in fracture aperture. A closed-form expression for the variance of travel time in the mean flow direction is derived for the case of advection-dominated solute transport. This derived expression allows the analysis of the effects of the variation of the fracture aperture on the variability of the solute travel time.
原文 | ???core.languages.en_GB??? |
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文章編號 | 107307 |
期刊 | Engineering Geology |
卷 | 325 |
DOIs | |
出版狀態 | 已出版 - 11月 2023 |
指紋
深入研究「Variability of travel time of solute particles in single fractures with spatially variable aperture」主題。共同形成了獨特的指紋。專案
- 2 已完成
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桃園台地都會與海岸帶關鍵區之時空特徵跨域鏈結研究-桃園台地都會與海岸帶關鍵區之時空特徵跨域鏈結研究(總計畫)
Ni, C.-F. (PI)
1/08/21 → 31/10/22
研究計畫: Research
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