Browsing University of Bergen Library by Journals "Water Resources Research"
Now showing items 1-5 of 5
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Effective Preconditioners for Mixed-Dimensional Scalar Elliptic Problems
(Journal article; Peer reviewed, 2023)Discretization of flow in fractured porous media commonly lead to large systems of linear equations that require dedicated solvers. In this work, we develop an efficient linear solver and its practical implementation for ... -
Identifying Stagnation Zones and Reverse Flow Caused by River-Aquifer Interaction: An Approach Based on Polynomial Chaos Expansions
(Journal article; Peer reviewed, 2021)Fluctuating stream stages and peak-flow events can significantly influence the interactions between streams and aquifers and modify the hydraulic gradient, the flux exchange and the subsurface flow paths. As a result, ... -
Impacts of Peak-Flow Events on Hyporheic Denitrification Potential
(Journal article; Peer reviewed, 2022)Subsurface flows, particularly hyporheic exchange fluxes, driven by streambed topography, permeability, channel gradient and dynamic flow conditions provide prominent ecological services such as nitrate removal from streams ... -
Numerical Treatment of State-Dependent Permeability in Multiphysics Problems
(Journal article; Peer reviewed, 2023)Constitutive laws relating fluid potentials and fluxes in a nonlinear manner are common in several porous media applications, including biological and reactive flows, poromechanics, and fracture deformation. Compared to ... -
Temporal Scale-Dependent Sensitivity Analysis for Hydrological Model Parameters Using the Discrete Wavelet Transform and Active Subspaces
(Journal article; Peer reviewed, 2021)Global sensitivity analysis is an important step in the process of developing and analyzing hydrological models. Measured data of different variables are used to identify the number of sensitive model parameters and to ...