Hydrodynamic analysis of radial collector well ageing at Belgrade well field

Božović, Đorđije M.; Polomčić, Dušan; Bajić, Dragoljub; Ratković, Jelena

doi:10.1016/j.jhydrol.2019.124463

Cited by 8 publications

(5 citation statements)

References 36 publications

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“…In inclined laterals, an uneven head distribution might thus just be an artefact of the variations in elevation head. Small head differences, such as the ones reported by Mohamed and Rushton (2006) and Božović et al (2020), therefore need to be treated with caution.…”

Section: Lateral Inflow Distributionmentioning

confidence: 96%

“…The overall perforation was as low as 0.48% and additionally impeded by a geotextile wrapping. Božović et al (2020) found that internal resistance effects within a lateral are practically negligible. They found average head losses of less than 1.5 cm along their laterals of 50 m length, and concluded that a uniform head approach, represented by a constant head boundary condition in their model, is therefore close enough to reality.…”

Section: Lateral Inflow Distributionmentioning

confidence: 99%

“…Compared to the analytical models presented above, numerical models are more flexible with regard to the geometries of the HW and the types and locations of boundary conditions that can be treated. All types of grid discretization have been used for numerical modeling of RCW, finite difference (Eberts and Bair 1990;Cunningham et al 1995;Kawecki and Al-Subaikhy 2005;Mohamed and Rushton 2006;Su et al 2007;Patel et al 2010;Kelson 2012;Collins and Houben 2020;Božović et al 2020), polygon finite difference (Chen et al 2003), finite element (Ophori and Farvolden 1985;Birch et al 2007;Lee et al 2010Lee et al , 2012Dimkić et al 2013) and finite volume (Hayati-Jafarbeigi et al 2020). In rectangular finite difference (FD) grids, RCW laterals may not align with the rows and columns of the model grid, or in other words, are not at right angles to the grid cells.…”

Section: Numerical Modelingmentioning

confidence: 99%

“…The results compared well to those obtained from a 3D AEM model and a MODFLOW model with a finely discretized grid. Božović et al (2020) used a similar approach by employing MOD-FLOW-USG for the aquifer flow and the Connected Linear Network Process package for the laterals. This proved useful to study clogging effects of the zone close to the laterals.…”

Section: Numerical Modelingmentioning

confidence: 99%

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Review: Horizontal, directionally drilled and radial collector wells

et al. 2022

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Horizontal wells play an often overlooked role in hydrogeology and aquifer remediation but can be an interesting option for many applications. This study reviews the constructional and hydraulic aspects that distinguish them from vertical wells. Flow patterns towards them are much more complicated than those for vertical wells, which makes their mathematical treatment more demanding. However, at some distance, the drawdown fields of both well types become practically identical, allowing simplified models to be used. Due to lower drawdowns, the yield of a horizontal well is usually higher than that of a vertical well, especially in thin aquifers of lower permeability, where they can replace several of the latter. The lower drawdown, which results in lower energy demand and slower ageing, and the centralized construction of horizontal wells can lead to lower operational costs, which can make them an economically feasible option.

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Section: Lateral Inflow Distributionmentioning

confidence: 96%

Section: Lateral Inflow Distributionmentioning

confidence: 99%

Section: Numerical Modelingmentioning

confidence: 99%

Section: Numerical Modelingmentioning

confidence: 99%

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Review: Horizontal, directionally drilled and radial collector wells

et al. 2022

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“…Multi-scale models can be constructed by the USG method either when the boundary of the local model area is irregular or the hydrological stresses change in the local area might have a significant influence on the larger region [19,20]. Finer grid resolution can be used to refine the area near river channels [21,22] or only on the model top layer [23] to investigate surface and groundwater interaction. Except for the ortho-grid, the Voronoi grid can be applied to simulate the area of interest with higher resolution [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Comparative Assessment of Methods for Coupling Regional and Local Groundwater Flow Models: A Case Study in the Beijing Plain, China

Liu

Zhou

Xie

et al. 2021

Water

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A coupled regional and local model is required when groundwater flow and solute transport are to be simulated in local areas of interest with a finer grid while regional aquifer boundary and major stresses should be retained with a coarser grid. The coupled model should also maintain interactions between the regional and local flow systems. In the Beijing Plain (China), assessment of managed aquifer recharge (MAR), groundwater pollution caused by rivers, capture zone of well fields, and land subsidence at the cone of depression requires a coupled regional and local model. This study evaluates three methods for coupling regional and local flow models for simulating MAR in the Chaobai River catchment in the Beijing Plain. These methods are the conventional grid refinement (CGR) method, the local grid refinement (LGR) method and the unstructured grid (USG) method. The assessment included the comparison of the complexity of the coupled model construction, the goodness of fit of the computed and observed groundwater heads, the consistency of regional and local groundwater budgets, and the capture zone of a well filed influenced by the MAR site. The results indicated that the CGR method based on MODFLOW-2005 is the easiest to implement the coupled model, capable of reproducing regional and local groundwater heads and budget, and already coupled with density and viscosity dependent model codes for transport simulation. However, the CGR method inherits shortcomings of finite difference grids to create multiple local models with inefficient computing efforts. The USG method based on MODFLOW-USG has the advantage of creating multi-scale models and is flexible to simulate rivers, wells, irregular boundaries, heterogeneities and the MAR site. However, it is more difficult to construct the coupled models with the unstructured grids, therefore, a good graphic user interface is necessary for efficient model construction. The LGR method based on MODFLOW-LGR can be used to create multiple local models in uniform aquifer systems. So far, little effort has been devoted to upgrade the LGR method for complex aquifer structures and develop the coupled transport models.

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