nonlinear time dependent example
Asked by
Myles English
I am trying to make a time dependent model using the pressure form of the Richards' Equation for unsaturated flow through a porous medium. It is nonlinear in the conductivity term, in which the saturated conductivity is scaled by a relative permeability function of the saturation (or pressure).
This particular model is in the horizontal plane so a vertical component of flow can be ignored and it becomes the nonlinear heat equation.
The FEniCS book has examples of nonlinear problems and time dependent problems but not both together.
Is there an existing model I can have a look at, or an example of a nonlinear coefficient in a time dependent problem?
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