QA tests of PorousFlow

The capability of PorousFlow is rigorously tested through a large number of regression tests that are provided in the test suite. Many of these tests are designed to recover analytical solutions to the problem or to reproduce well-known benchmark problems. The pages below describe some of the more non-trivial tests.

Many of the PorousFlow tests were created before MOOSE's current documentation system was established. Therefore, we are still in the process of documenting the tests. The following pages need to be completed.