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| 1 | 渗流的颗粒流细观模拟显示文摘本文基于颗粒流理论,运用PFC2D计算程序的FISHTANK函数库和FISH语言,定义了细观角度概念———流体域,并分别定义了流体域的流动方程和压力方程,将颗粒体与流体域耦合,推导出颗粒流理论显式求解的稳定条件,成功地对土中的渗流进行了模拟,得到了渗流过程中压力和流速的变化规律。结果表明,运用PFC2D程序模拟的渗流规律符合达西定律,这一结果为PFC2D在渗流和渗透破坏等方面的深入研究应用提供了一定的理论基础。 | 周健 张刚 孔戈 | 2006 | 水利学报2006，37，1： | 48 |
| 2 | A NEW NUMERICAL METHOD FOR GROUNDWATER FIOW AND SOLUTE TRANSPORT USING VELOCITY FIELD显示文摘A new numerical method for groundwater flow analysis was introduced to estimate simultaneously velocity vectors and water pressure head.The method could be employed to handle the vertical flow under variably saturated conditions and for horizontal flow as well.The method allows for better estimation of velocities at the element nodes which can be used as direct input to transport models.The advection-dispersion process was treated by the Eulerian-Lagrangian approach with particle tracking technique using the velocities at FEM nodes.The method was verified with the classical one dimensional model and applied to simulate contaminant transport process through a slurry wall as a barrier to prevent leachate pollution from a sanitary landfill. | ZHANG Qian-fei LAN Shou-qi WANG Yan-ming XU Yong-fu | 2008 | Journal of Hydrodynamics2008，20，3： | 19 |
| 3 | NUMERICAL STUDY ON THE PURIFICATION PERFORMANCE OF RIVERBANK显示文摘During the rain time, the runoff infiltrates into the riverbank through the collecting gutter and slope surface. The city runoff is generally polluted by organic, oil, heavy metal particulates, etc. The pollutants moving with the water through the riverbank experience advection, dispersion, diffusion, adsorption, biochemical reaction and plant uptaking processes. In this article, a mathematical model was developed to simulate the performance of pollutant removal of the riverbank. The model took those main mechanisms into account. The modified Richards equation was used in simulating flow field. The mass balance law was employed in deriving the equation for pollutant transport, where the diffusion and dispersion were described with the Fick-type law, the adsorption was macroscopically expressed as form isotherm, and the bio-chemical degradation process was assumed to follow the Monod kinetics. The NH3-N and TP were considered in the present model. The mathematical model was descritized with a finite element numerical model, which was applied to two types of model riverbanks. In the model test, the hydraulic loading was assumed to have the intermittent pattern simulating the storm runoff of certain return period, and the values of the rainfall runoff and concentrations of the NH3-N and TP were taken from the model test. The computed overall removal rates for the NH3-N and TP in 6 cases are in the range of 88%-98%, 87%-97%, respectively. The differences between the computed and tested overall removal rates for the NH3-N and TP are less than 5%. The time-varying oscillation pattern of the concentrations of the NH3-N and TP were rationally simulated, which shows that the model presented in this article can be used to assess the purification performance of the riverbank constructed with sand or soil. | DAI Yu WANG De-guan | 2007 | Journal of Hydrodynamics2007，19，5： | 10 |
| 4 | 石油炼化区地下水环境污染预测与防控研究显示文摘以云南某石油炼化区为研究对象,模拟预测污染物的迁移规律、污染范围以及污染物浓度分布。在地下水环境污染预测分析的基础上,采用模型验证区域内地下水防控体系的有效性;验证应急井以恒定流量抽水能有效抽出污染物,达到修复地下水的目的。同时分析整个应急防控过程中抽取地下水对区域地下水环境的影响。 | 阮巍 徐世光 郭婷婷 赵磊 | 2017 | 地质灾害与环境保护2017，28，4： | 4 |
| 5 | ANALYTICAL SOLUTION OF GROUNDWATER FLUCTUATIONS IN ESTUARINE AQUIFER显示文摘As a basic factor in the environment of estuary, tidal effects in the coastal aquifer have recently attracted much attention because tidal dynamic also greatly influences the solute transport in the coastal aquifer. Previous studies on tidal dynamic of coastal aquifers have focused on the inland propagation of oceanic tides in the cross-shore direction, a configuration that is essentially one-dimensional. Two-dimensional analytical solutions for groundwater level fluctuation in recent papers are localized in presenting the effect of both oceanic tides and estuarine tides in quadrantal aquifer. A two-dimensional model of groundwater fluctuations in estuarine zone in proposed in this paper. Using complex transform, the two-dimensional flow equation subject to periodic boundary condition is changed into time-independent elliptic problem. Based on Green function method, an analytical solution for groundwater fluctuations in fan-shaped aquifer is derived. The response to of groundwater tidal loading in an estuary and ocean is discussed. The result show that its more extensive application than recent studies. | CHEN Jing ZHOU Zhi-fang JIA Suo-bao | 2005 | Journal of Hydrodynamics2005，17，5： | 3 |
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