MODFLOW is a three-dimensional (3D) finite-difference groundwater model that was first published in 1984. It has a modular structure that allows it to be easily modified to adapt the code for a particular application. Many new capabilities have been added to the original model. MODFLOW-2005 is the most current release of MODFLOW.
MODFLOW-2005 (Harbaugh, 2005) simulates steady and nonsteady flow in an irregularly shaped flow system in which aquifer layers can be confined, unconfined, or a combination of confined and unconfined. Flow from external stresses, such as flow to wells, areal recharge, evapotranspiration, flow to drains, and flow through river beds, can be simulated. Hydraulic conductivities or transmissivities for any layer may differ spatially and be anisotropic (restricted to having the principal directions aligned with the grid axes), and the storage coefficient may be heterogeneous. Specified head and specified flux boundaries can be simulated as can a head dependent flux across the model's outer boundary that allows water to be supplied to a boundary block in the modeled area at a rate proportional to the current head difference between a "source" of water outside the modeled area and the boundary block.
* MODFLOW-2005 download link provides freeware version of the software.
CADRE Flow is developed using the basic principles of finite element method as applied to the hydraulics flow field.
The computer program (HST3D) described in this report simulates heat and solute transport in three-dimensional saturated ground-water flow systems.
Pipe Flow Wizard is able to perform four different flow and pressure drop calculations on a single pipe depending on the known information.
A model for 2D or 3D saturated-unsaturated, variable-density ground-water flow with solute or energy transport.
An unstructured grid version of modflow for simulating groundwater flow and tightly coupled processes using a control volume finite-difference formulation
ModelMuse is a graphical user interface for MODFLOW-2005, MODFLOW-LGR, MODFLOW-LGR2, MODFLOW-NWT, MODFLOW-CFP, MT3DMS, SUTRA, PHAST, MODPATH, and ZONEBUDGET
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