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Verification Tests for Flow Models
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Saturated Flow
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Need to document tests for single-phase steady-state as well as the
transient case.


Richards: Unsaturated Single Phase Flow
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Verification problems from the literature have been identified to test
isothermal, single-phase, variably saturated flow.  We initially focus
on test problems that address the two most widely used k-s-p
functions, van Genuchten-Mualem and Brooks-Corey.  These include
steady-state and transient tests with Dirichlet and Neumann boundary
conditions.

.. include:: flow_richards.rst