Numerical Evaluation of Groundwater Flows: Modflow vs. Fe Models

Vellando, P.; Juncosa, Ricardo; Padilla, Francisco; García-Rábade, Héctor

doi:10.1615/jpormedia.2020033043

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our study presented herein employed the method of Wang et al (2013) to calculate water intake from seepage wells. Radiant pipes and galleries were conceptualized as a series of interconnected nodes and pipes, which were superposed on the finite difference grid of MODFLOW, a modeling environment for practical applications in three-dimensional groundwater flow, which has been widely to overcome issues related to groundwater (Al-Hashmi 2020; Vellando et al 2020). According to the actual position of each node, its plane and vertical positions were determined to simulate the actual radiant pipes and galleries.…”

Section: Methodsmentioning

confidence: 99%

In-situ pumping tests and numerical simulations of seepage wells in the Yellow River valley, China

Wang

et al. 2021

Water Supply

View full text Add to dashboard Cite

Seepage wells that can convert surface water into groundwater are often constructed near the river valley to obtain more water and lead to smaller drawdown comparing with traditional wells. Seepage wells have been widely used, whilst the groundwater and river level variations caused by seepage wells are still unclear, and numerical models are rarely verified due to the lack of in-situ observation data, which may lead to the results are quite different from the actual conditions. To address those limitations, a large-scale pumping test was carried out near the Yellow River valley in China and a coupled seepage-pipe flow model was established using the exchange yield between the aquifer and pipe as the couple key in this research. The coupled model was evaluated with in-situ measurement. The field observation showed that both the river and groundwater had a positive response to the pumping of the seepage wells. The simulation results indicated that our model can well estimate the pumping rate and drawdown with root-mean-square deviations of 158.235 m3/d and 0.766 m, respectively. Further, it is also found that the groundwater showed the obvious characteristics of three-dimensional flow under the influence of seepage wells and the maximum drawdown should be less than 15 m to ensure exploitation efficiency. These findings provide important information that can guide the design and construction of seepage wells to improve the rational exploitation of groundwater.

show abstract

Section: Methodsmentioning

confidence: 99%

In-situ pumping tests and numerical simulations of seepage wells in the Yellow River valley, China

Wang

et al. 2021

Water Supply

View full text Add to dashboard Cite

show abstract

Application of the Darcy and Richards equations for modelling of water capillary rise in building materials

Widomski

Łagód

Suchorab

et al. 2021

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

This paper presents the application of the Darcy and Richards equations, describing water flow and dynamic changes of the water content in porous medium, for numerical modeling of water capillary rise in the selected building materials. The numerical simulations of unsaturated and variably saturated water flow in the studied materials were performed in FEFLOW commercial computational software, by DHI-Wasy, Germany. The developed model represented a wall section constructed of aerated concrete blocks, covered by mortar prepared using blended cement with biomass ash addition. The physical and water retention characteristics of the modeled materials were based on the previously performed laboratory measurements and literature research. The assumed initial conditions reflected air dry wall with limited moisture, while the boundary conditions allowed modeling of capillary rise due to direct contact of the studied materials with water with variable pressure head. The results of numerical calculations allowed observation of the time-dependent changes in the moisture content of building materials in relation to their physical properties and variable boundary conditions.

show abstract

Numerical Evaluation of Groundwater Flows: Modflow vs. Fe Models

Cited by 2 publications

References 0 publications

In-situ pumping tests and numerical simulations of seepage wells in the Yellow River valley, China

In-situ pumping tests and numerical simulations of seepage wells in the Yellow River valley, China

Application of the Darcy and Richards equations for modelling of water capillary rise in building materials

Contact Info

Product

Resources

About