Review of numerical solution of Richardson–Richards equation for variably saturated flow in soils
Modeling variably saturated flow in the vadose zone is of vital importance to many scientific
fields and engineering applications. Richardson–Richards equation (RRE, which is …
fields and engineering applications. Richardson–Richards equation (RRE, which is …
Quantify the effects of groundwater level recovery on groundwater nitrate dynamics through a quasi-3D integrated model for the vadose zone-groundwater coupled …
Y Zang, X Hou, Z Li, P Li, Y Sun, B Yu, M Li - Water Research, 2022 - Elsevier
Groundwater level (GWL) recovery in some semiarid regions, attributed to mitigation
countermeasures for groundwater depletion, potentially causes nitrate accumulated in the …
countermeasures for groundwater depletion, potentially causes nitrate accumulated in the …
Comparison of the use of a physical-based model with data assimilation and machine learning methods for simulating soil water dynamics
Soil moisture plays a critical role as an essential component of the global water resources by
regulating mass and energy exchange between land surface and atmosphere …
regulating mass and energy exchange between land surface and atmosphere …
A modified Picard iteration scheme for overcoming numerical difficulties of simulating infiltration into dry soil
Numerical models based on Richards' equation are often employed to simulate the soil
water dynamics. Among them, those Picard iteration models which use the head as primary …
water dynamics. Among them, those Picard iteration models which use the head as primary …
A Richards' equation-based model for wave-resolving simulation of variably-saturated beach groundwater flow dynamics
This study introduces a model based on Richards' equation to describe variably-saturated
beach groundwater flow. The surface wave propagation is computed by the phase-resolving …
beach groundwater flow. The surface wave propagation is computed by the phase-resolving …
A dynamic data-driven method for dealing with model structural error in soil moisture data assimilation
Attributing to the flexibility in considering various types of observation error and model error,
data assimilation has been increasingly applied to dynamically improve soil moisture …
data assimilation has been increasingly applied to dynamically improve soil moisture …
Implicit and semi-implicit second-order time step** methods for the Richards equation
This study concerns numerical methods for efficiently solving the Richards equation where
different weak formulations and computational techniques are analyzed. The spatial …
different weak formulations and computational techniques are analyzed. The spatial …
Data‐driven discovery of soil moisture flow governing equation: A sparse regression framework
Conventionally, soil moisture dynamics are mathematically modeled by the Richardson‐
Richards equation, whose derivation is based on the conservation of mass and the …
Richards equation, whose derivation is based on the conservation of mass and the …
Switching the Richards' equation for modeling soil water movement under unfavorable conditions
Simulation of variably saturated soil water flow requires the use of pressure head, or soil
moisture, or a switching between the two, as the primary variable for solving Richards' …
moisture, or a switching between the two, as the primary variable for solving Richards' …
Impacts of different types of measurements on estimating unsaturated flow parameters
This paper assesses the value of different types of measurements for estimating soil
hydraulic parameters. A numerical method based on ensemble Kalman filter (EnKF) is …
hydraulic parameters. A numerical method based on ensemble Kalman filter (EnKF) is …