Low-resolution modeling of dense drainage networks in confining layers

P.S. Pauw, S.E.A.T.M. van der Zee, A. Leijnse, J.R. Delsman, P.G.B. de Louw, W.J. de Lange, G.H.P. Oude Essink

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Abstract

Groundwater-surface water (GW-SW) interaction in numerical groundwater flow models is generally simulated using a Cauchy boundary condition, which relates the flow between the surface water and the groundwater to the product of the head difference between the node and the surface water level, and a coefficient, often referred to as the “conductance.” Previous studies have shown that in models with a low grid resolution, the resistance to GW-SW interaction below the surface water bed should often be accounted for in the parameterization of the conductance, in addition to the resistance across the surface water bed. Three conductance expressions that take this resistance into account were investigated: two that were presented by Mehl and Hill (2010) and the one that was presented by De Lange (1999). Their accuracy in low-resolution models regarding salt and water fluxes to a dense drainage network in a confined aquifer system was determined. For a wide range of hydrogeological conditions, the influence of (1) variable groundwater density; (2) vertical grid discretization; and (3) simulation of both ditches and tile drains in a single model cell was investigated. The results indicate that the conductance expression of De Lange (1999) should be used in similar hydrogeological conditions as considered in this paper, as it is better taking into account the resistance to flow below the surface water bed. For the cases that were considered, the influence of variable groundwater density and vertical grid discretization on the accuracy of the conductance expression of De Lange (1999) is small.
Original languageEnglish
Pages (from-to)771-781
JournalGroundwater
Volume53
Issue number5
DOIs
Publication statusPublished - 2015

Fingerprint

drainage network
Surface waters
Drainage
surface water
Groundwater
groundwater-surface water interaction
modeling
groundwater
tile drain
confined aquifer
groundwater flow
Groundwater flow
parameterization
water level
boundary condition
Water levels
Tile
Parameterization
Aquifers
salt

Keywords

  • groundwater flow
  • aquifers
  • models
  • climatic change
  • aquifer
  • simulation
  • intrusion
  • seepage
  • florida
  • system
  • field
  • flow

Cite this

Pauw, P. S., van der Zee, S. E. A. T. M., Leijnse, A., Delsman, J. R., de Louw, P. G. B., de Lange, W. J., & Oude Essink, G. H. P. (2015). Low-resolution modeling of dense drainage networks in confining layers. Groundwater, 53(5), 771-781. https://doi.org/10.1111/gwat.12273
Pauw, P.S. ; van der Zee, S.E.A.T.M. ; Leijnse, A. ; Delsman, J.R. ; de Louw, P.G.B. ; de Lange, W.J. ; Oude Essink, G.H.P. / Low-resolution modeling of dense drainage networks in confining layers. In: Groundwater. 2015 ; Vol. 53, No. 5. pp. 771-781.
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abstract = "Groundwater-surface water (GW-SW) interaction in numerical groundwater flow models is generally simulated using a Cauchy boundary condition, which relates the flow between the surface water and the groundwater to the product of the head difference between the node and the surface water level, and a coefficient, often referred to as the “conductance.” Previous studies have shown that in models with a low grid resolution, the resistance to GW-SW interaction below the surface water bed should often be accounted for in the parameterization of the conductance, in addition to the resistance across the surface water bed. Three conductance expressions that take this resistance into account were investigated: two that were presented by Mehl and Hill (2010) and the one that was presented by De Lange (1999). Their accuracy in low-resolution models regarding salt and water fluxes to a dense drainage network in a confined aquifer system was determined. For a wide range of hydrogeological conditions, the influence of (1) variable groundwater density; (2) vertical grid discretization; and (3) simulation of both ditches and tile drains in a single model cell was investigated. The results indicate that the conductance expression of De Lange (1999) should be used in similar hydrogeological conditions as considered in this paper, as it is better taking into account the resistance to flow below the surface water bed. For the cases that were considered, the influence of variable groundwater density and vertical grid discretization on the accuracy of the conductance expression of De Lange (1999) is small.",
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Pauw, PS, van der Zee, SEATM, Leijnse, A, Delsman, JR, de Louw, PGB, de Lange, WJ & Oude Essink, GHP 2015, 'Low-resolution modeling of dense drainage networks in confining layers', Groundwater, vol. 53, no. 5, pp. 771-781. https://doi.org/10.1111/gwat.12273

Low-resolution modeling of dense drainage networks in confining layers. / Pauw, P.S.; van der Zee, S.E.A.T.M.; Leijnse, A.; Delsman, J.R.; de Louw, P.G.B.; de Lange, W.J.; Oude Essink, G.H.P.

In: Groundwater, Vol. 53, No. 5, 2015, p. 771-781.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Low-resolution modeling of dense drainage networks in confining layers

AU - Pauw, P.S.

AU - van der Zee, S.E.A.T.M.

AU - Leijnse, A.

AU - Delsman, J.R.

AU - de Louw, P.G.B.

AU - de Lange, W.J.

AU - Oude Essink, G.H.P.

PY - 2015

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N2 - Groundwater-surface water (GW-SW) interaction in numerical groundwater flow models is generally simulated using a Cauchy boundary condition, which relates the flow between the surface water and the groundwater to the product of the head difference between the node and the surface water level, and a coefficient, often referred to as the “conductance.” Previous studies have shown that in models with a low grid resolution, the resistance to GW-SW interaction below the surface water bed should often be accounted for in the parameterization of the conductance, in addition to the resistance across the surface water bed. Three conductance expressions that take this resistance into account were investigated: two that were presented by Mehl and Hill (2010) and the one that was presented by De Lange (1999). Their accuracy in low-resolution models regarding salt and water fluxes to a dense drainage network in a confined aquifer system was determined. For a wide range of hydrogeological conditions, the influence of (1) variable groundwater density; (2) vertical grid discretization; and (3) simulation of both ditches and tile drains in a single model cell was investigated. The results indicate that the conductance expression of De Lange (1999) should be used in similar hydrogeological conditions as considered in this paper, as it is better taking into account the resistance to flow below the surface water bed. For the cases that were considered, the influence of variable groundwater density and vertical grid discretization on the accuracy of the conductance expression of De Lange (1999) is small.

AB - Groundwater-surface water (GW-SW) interaction in numerical groundwater flow models is generally simulated using a Cauchy boundary condition, which relates the flow between the surface water and the groundwater to the product of the head difference between the node and the surface water level, and a coefficient, often referred to as the “conductance.” Previous studies have shown that in models with a low grid resolution, the resistance to GW-SW interaction below the surface water bed should often be accounted for in the parameterization of the conductance, in addition to the resistance across the surface water bed. Three conductance expressions that take this resistance into account were investigated: two that were presented by Mehl and Hill (2010) and the one that was presented by De Lange (1999). Their accuracy in low-resolution models regarding salt and water fluxes to a dense drainage network in a confined aquifer system was determined. For a wide range of hydrogeological conditions, the influence of (1) variable groundwater density; (2) vertical grid discretization; and (3) simulation of both ditches and tile drains in a single model cell was investigated. The results indicate that the conductance expression of De Lange (1999) should be used in similar hydrogeological conditions as considered in this paper, as it is better taking into account the resistance to flow below the surface water bed. For the cases that were considered, the influence of variable groundwater density and vertical grid discretization on the accuracy of the conductance expression of De Lange (1999) is small.

KW - grondwaterstroming

KW - watervoerende lagen

KW - modellen

KW - klimaatverandering

KW - groundwater flow

KW - aquifers

KW - models

KW - climatic change

KW - aquifer

KW - simulation

KW - intrusion

KW - seepage

KW - florida

KW - system

KW - field

KW - flow

U2 - 10.1111/gwat.12273

DO - 10.1111/gwat.12273

M3 - Article

VL - 53

SP - 771

EP - 781

JO - Groundwater

JF - Groundwater

SN - 0017-467X

IS - 5

ER -