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Earth Science Module

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Two-Phase Flow in Porous MediaTwo-Phase Flow in Porous Media

The first model describes the simultaneous flow of two immiscible fluids in porous media - here air displaces water in a multi-step inlet pressure experiment. We solve for the pressure and the degree saturation for the air and water...

Phase ChangePhase Change

This example demonstrates how to model a phase change and predict its impact on a heat transfer analysis. When a material changes phase, from solid to liquid for instance, energy is added to the solid. Instead of creating a temperature...

Pore-Scale FlowPore-Scale Flow

This non-conventional model of porous media flow utilizes Navier-Stokes equations in the interstices of a porous media. The model comes from the pore-scale flow experiments conducted by Arturo Keller, Maria Auset, and Sanya...

Calculation of the Height of the Water Table in an Unconfined AquifierCalculation of the Height of the Water Table in an Unconfined Aquifier

This model demonstrates COMSOL Multiphysics application to a benchmark case of steady-state fluid flow and transient solute transport through a vertical cross section in an unconfined aquifer. The model estimates the height of the...

Darcy - Brinkman ExampleDarcy - Brinkman Example

This example model characterizes a transition in flow regimes: slow flow in porous media quickens to a perforation in a well casing and ultimately moves into and up the well. Darcy’s law describes flow velocities at a distance from...

Forchheimer FlowForchheimer Flow

The coupling of free media flow with porous media flow is common in the fields of earth science and chemical engineering. Perhaps the most common way to deal with coupled free and porous media flow is to incorporate flow described by...

Free Convection in a Porous MediumFree Convection in a Porous Medium

This example treats the modeling of sub-surface flow where free convection in porous media is analyzed. The results are compared with published literature in the field. The model couples the momentum balance to an energy balance...

Sorbing SoluteSorbing Solute

In this example water ponded in a ring on the ground moves into a relatively dry soil column and carries a chemical with it. As it moves through the variably saturated soil column, the chemical attaches to solid particles, slowing the...

Biot PoroelasticityBiot Poroelasticity

The Biot Poroelasticity example two-way couples Darcy's law and the plane strain application modes to assess deformation of porous media that results from fluid withdrawals. The model builds on top of the Terzaghi Compaction example....

Characterization of an Aquifer through Inverse Modeling from Pump TestsCharacterization of an Aquifer through Inverse Modeling from Pump Tests

This model uses the Optimization interface to solve the inverse problem for determining the spatially variable hydraulic conductivity on a discretized quadratic grid from a number of aquifer pump tests. Because the number of...


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