globalchange  > 气候变化与战略
DOI: 10.5194/hess-23-19-2019
论文题名:
Stochastic modeling of flow and conservative transport in three-dimensional discrete fracture networks
作者: Lee I.-H.; Ni C.-F.; Lin F.-P.; Lin C.-P.; Ke C.-C.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2019
卷: 23, 期:1
起始页码: 19
结束页码: 34
语种: 英语
Scopus关键词: Intelligent systems ; Mesh generation ; Monte Carlo methods ; Stochastic systems ; Uncertainty analysis ; Break through curve ; Discrete fracture network ; Equivalent hydraulic conductivities ; Monte carlo simulations (MCS) ; Non-stationarities ; Steady-state flows ; Transport modeling ; Transport solution ; Fracture ; finite element method ; flow velocity ; fracture flow ; hydraulic conductivity ; hydrogeochemistry ; stochasticity ; three-dimensional flow ; transition zone ; Monaco ; Monte Carlo
英文摘要: This study presents the stochastic Monte Carlo simulation (MCS) to assess the uncertainty of flow and conservative transport in 3-D discrete fracture networks (DFNs). The MCS modeling workflow involves a number of developed modules, including a DFN generator, a DFN mesh generator, and a finite element model for solving steady-state flow and conservative transport in 3-D DFN realizations. The verification of the transport model relies on the comparison of transport solutions obtained from HYDROGEOCHEM model and an analytical model. Based on 500 DFN realizations in the MCS, the study assesses the effects of fracture intensities on the variation of equivalent hydraulic conductivity and the exhibited behaviors of concentration breakthrough curves (BTCs) in fractured networks. Results of the MCS show high variations in head and Darcy velocity near the specified head boundaries. There is no clear stationary region obtained for the head variance. However, the transition zones of nonstationarity for x-direction Darcy velocity is obvious, and the length of the transition zone is found to be close to the value of the mean fracture diameter for the DFN realizations. The MCS for DFN transport indicates that a small sampling volume in DFNs can lead to relatively high values of mean BTCs and BTC variations. © 2019 Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163087
Appears in Collections:气候变化与战略

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作者单位: Lee, I.-H., Graduate Institute of Applied Geology, National Central University, Taoyuan city, 32001, Taiwan, Center for Environmental Studies, National Central University, Taoyuan City, 32001, Taiwan; Ni, C.-F., Graduate Institute of Applied Geology, National Central University, Taoyuan city, 32001, Taiwan, Center for Environmental Studies, National Central University, Taoyuan City, 32001, Taiwan; Lin, F.-P., Data Computing Division, National Center for High Performance Computing, Hsinchu City, 30076, Taiwan; Lin, C.-P., Graduate Institute of Applied Geology, National Central University, Taoyuan city, 32001, Taiwan; Ke, C.-C., Sinotech Engineering Consultants Inc., Taipei City, 11494, Taiwan

Recommended Citation:
Lee I.-H.,Ni C.-F.,Lin F.-P.,et al. Stochastic modeling of flow and conservative transport in three-dimensional discrete fracture networks[J]. Hydrology and Earth System Sciences,2019-01-01,23(1)
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