Groundwater Flow Models
نویسنده
چکیده
In general, models are conceptual descriptions or approximations that describe physical systems using mathematical equations; they are not exact descriptions of physical systems or processes. By mathematically representing a simplified version of a hydrogeological system, reasonable alternative scenarios can be predicted, tested, and compared. The applicability or usefulness of a model depends on how closely the mathematical equations approximate the physical system being modeled. In order to evaluate the applicability or usefulness of a model, it is necessary to have a thorough understanding of the physical system and the assumptions embedded in the derivation of the mathematical equations.
منابع مشابه
Investigating future changes in groundwater quantity and quality in the Khash alluvial aquifer through numerical groundwater flow and solute transport modeling
The Khash alluvial aquifer, in Sistan and Baluchestan Province, supplies the water needed for agriculture, drinking, and industry in the Khash area. In order to predict the future status of groundwater level and water quality, and to find aquifer management solutions, groundwater flow and solute transport models were developed using MODFLOW and MT3DMS. GMS 10.3 was used to develop the model. Ca...
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It is over two decades that groundwater flow models are routinely implemented for better management of groundwater resources.Modeling groundwater flow with the help of the ground water modeling system (GMS) in the Damghan plain aquifer in northern Iran,which experiences declining levels and numerous environmental hazards, has demonstrated that, (a) in the worst case scenario theaquifer will fac...
متن کاملApproaches for Modelling Transient Unsaturated-saturated Groundwater Flow during and after Construction
Construction of underground research laboratories and geological disposal facilities has a significant transient impact on groundwater flow, leading to a drawdown in the water table and groundwater pressures, and groundwater inflow into shafts, access ways and tunnels accompanied by desaturation of the surrounding rock. Modelling the impact of underground facilities on groundwater flow is impor...
متن کاملMegacity pumping and preferential flow threaten groundwater quality
Many of the world's megacities depend on groundwater from geologically complex aquifers that are over-exploited and threatened by contamination. Here, using the example of Dhaka, Bangladesh, we illustrate how interactions between aquifer heterogeneity and groundwater exploitation jeopardize groundwater resources regionally. Groundwater pumping in Dhaka has caused large-scale drawdown that exten...
متن کاملUncertainty Analysis with Site-Specific Groundwater Models: Experiences and Observations
Groundwater flow and transport predictions are a major component of remedial action evaluations for contaminated groundwater at the Savannah River Site. Because all groundwater modeling results are subject to uncertainty from various causes; quantification of the level of uncertainty in the modeling predictions is beneficial to project decision makers. Complex site-specific models present formi...
متن کاملComparison of Explicit Finite Difference Model and Galerkin Finite Element Model for Simulation of Groundwater Flow
Abstract— This paper describes Galerkin finite element (FEFLOW) models for the simulation of groundwater flow in twodimensional, transient, unconfined groundwater flow systems. This study involves validation of FEFLOW model with reported analytical solutions and also comparison of reported Explicit Finite Difference Model for groundwater flow simulation (FDFLOW). The model is further used to ob...
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تاریخ انتشار 2004