Neumann boundary conditions not clearly documented

[guyer]

As discussed in http://thread.gmane.org/gmane.comp.python.fipy/3035, the wiki page on BoundaryConditions does not accurately describe the Neumann case. The [http://www.ctcms.nist.gov/fipy/documentation/USAGE.html#applying-fixed-gradient-boundary-conditions-neumann official documentation] is better, but still doesn't explain how to specify a magnitude for the normal flux.

• The wiki page should be corrected or removed

• The documentation should address how to get the normal

• The mesh._faceNormals property should be made public if users are expected to use it

  Imported from trac ticket #639, created by guyer on 04-30-2013 at 10:12, last modified: 09-11-2013 at 18:02

[fipymigrate]

In 9ee09e7:

#CommitTicketReference repository="fipy" revision="9ee09e7548a36e5659f182a4cd74a98979f02ef8"
Rename `_faceNormals` to `faceNormals`

Addresses issue #382

Trac comment by Jonathan Guyer guyer@nist.gov on 09-09-2013 at 23:48

[fipymigrate]

In 101b968:

#CommitTicketReference repository="fipy" revision="101b968052d2d1dccbc162869d2c1f1c763a988f"
Document normal gradient constraint

Addresses issue #382

Trac comment by Jonathan Guyer guyer@nist.gov on 09-09-2013 at 23:48

[guyer]

wiki updated.

Pull request:

The following changes since commit aee8dc996362574344c5a7620b87fb8db50b95e7:

  Merge branch 'ticket653-enable_google_analytics' into develop (2013-09-06 12:01:56 -0400)

are available in the git repository at:


  ssh://git@code.matforge.org/nist/fipy.git ticket639-Neumann_boundary_conditions_not_clearly_documented

for you to fetch changes up to 101b968052d2d1dccbc162869d2c1f1c763a988f:

  Document normal gradient constraint (2013-09-09 23:41:06 -0400)

----------------------------------------------------------------
Jonathan Guyer (2):
Rename `_faceNormals` to `faceNormals`
Document normal gradient constraint

 documentation/USAGE.txt                    |  5 +++++
 fipy/meshes/abstractMesh.py                | 13 +++++++++----
 fipy/meshes/cylindricalNonUniformGrid2D.py |  4 ++--
 fipy/meshes/cylindricalUniformGrid1D.py    |  2 +-
 fipy/meshes/cylindricalUniformGrid2D.py    |  4 ++--
 fipy/meshes/mesh.py                        | 20 ++++++++++----------
 fipy/meshes/mesh2D.py                      |  8 ++++----
 fipy/meshes/nonUniformGrid2D.py            |  2 +-
 fipy/meshes/nonUniformGrid3D.py            |  2 +-
 fipy/meshes/periodicGrid1D.py              |  2 +-
 fipy/meshes/periodicGrid2D.py              |  2 +-
 fipy/meshes/tri2D.py                       |  2 +-
 fipy/meshes/uniformGrid.py                 |  4 ++--
 fipy/meshes/uniformGrid1D.py               |  6 +++---
 fipy/meshes/uniformGrid2D.py               |  8 ++++----
 fipy/meshes/uniformGrid3D.py               |  8 ++++----
 fipy/terms/abstractDiffusionTerm.py        |  2 +-
 fipy/terms/diffusionTermNoCorrection.py    |  2 +-
 18 files changed, 53 insertions(+), 43 deletions(-)

Trac comment by guyer on 09-09-2013 at 23:53

[fipymigrate]

In 2cdff73:

#CommitTicketReference repository="fipy" revision="2cdff73ca19a5c77599fdbd8324edd09119c6a5a"
Merge branch 'develop' into ticket639-Neumann_boundary_conditions_not_clearly_documented

Addresses issue #382

Trac comment by Daniel Wheeler daniel.wheeler2@gmail.com on 09-11-2013 at 18:02

[fipymigrate]

In cba2d83:

#CommitTicketReference repository="fipy" revision="cba2d83b85e492d292a7f82eb6765a8bf2f14a30"
Merge branch 'ticket639-Neumann_boundary_conditions_not_clearly_documented' into develop

Fixes issue #382

Trac comment by Daniel Wheeler daniel.wheeler2@gmail.com on 09-11-2013 at 18:02