ENH: cvMesh.org : moved to nonRelease

doc/cvMesh.org

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-#                            -*- mode: org; -*-
-#
-#+TITLE:                 cvMesh usage
-#+AUTHOR:                      OpenCFD Ltd.
-#+DATE:                         June 2011
-#+LINK:                  http://www.OpenFOAM.com
-#+OPTIONS: author:nil ^:{}
-#+STARTUP: hidestars
-#+STARTUP: odd
-
-* Method
-  + initial point seeding. These are the background points to
-    - start the triangulation from (a subset)
-    - do cellsize and alignment queries on
-  + mesh movement based on cell size and alignment
-  + surface conformation by introducing duplicate points
-  + do final simplification by face filtering
-
-
-* Typical work flow
-  + clean surfaces (surfaceClean, surfaceOrient)
-  + set in system/controlDict
-    - startTime to latestTime
-    - endTime to number of meshing iterations
-    - writeInterval to large value
-  + select defaultCellSize [m]
-  + select refinement patterns based on e.g. surface
-    (cellSizeControlGeometry)
-  + select autoDensity initial point seeding
-  + force output of unfiltered mesh (to save time) by specifying unobtainable
-    mesh quality:
-      continueFilteringOnBadInitialPolyMesh   false;
-      maxNonOrtho 1;
-  + check visually
-    - features resolved?
-    - cell size ok? Load in targetCellSize volScalarField.
-    - if any surface protusions that are unacceptable
-        - lower targetCellSize
-        - lower maxSurfaceProtrusionCoeff (usually 0.1 of targetCellSize)
-  + restart. Repeat until surface good enough.
-  + produce final mesh
-    - set initialPointsMethod to pointFile so it reuses the Delaunay vertices
-    - re-enable mesh filtering
-        continueFilteringOnBadInitialPolyMesh   true;
-        maxNonOrtho 65; //or whatever;
-
-
-* Debugging
-  + run surfaceFeatureExtract with -writeObj to dump all features
-  + set initialPointsMethod to pointFile
-  + set writeInterval to 1
-  + run e.g. topoSet to create slices
-
-
-* Annotated output
-#+BEGIN_EXAMPLE
-Create time
-
-Reading geometryToConformTo
-
-Reading cellSizeControlGeometry
-
-Selecting initialPointsMethod autoDensity
-
-Selecting relaxationModel adaptiveLinear
-
-Selecting faceAreaWeightModel piecewiseLinearRamp
-
-Conforming to feature points
-    Inserted 32 feature vertices
-
-#+END_EXAMPLE
-In this particular case there are 8 straight corners so these can be recreated
-with a triplet each.
-
-#+BEGIN_EXAMPLE
-Inserting initial points
-
-    autoDensity
-        6922 points placed
-        9139 locations queried
-        0.7574132837 success rate
-#+END_EXAMPLE
-The initial points get created by the =autoDensity= method. It will accept only
-part (75% in this cae) of the initial points to create randomly distributed locations.
-#+BEGIN_EXAMPLE
-
-    6922 points to insert...
-    6922 points inserted
-
-Build coarse surface conformation
-
-Initial conformation
-    Number of vertices 6962
-    Number of surface hits 2245
-    Number of edge hits 238
-#+END_EXAMPLE
-The initial points get inserted into the triangulation and it detects the number
-of surface pierces (surface hits) and the number of XXX (edge hits).
-#+BEGIN_EXAMPLE
-
-Stopping iterations when:
-    total number of hits drops below 0.001 of initial hits (2)
- or
-    maximum number of iterations (15) is reached
-#+END_EXAMPLE
-It will introduce additional duplicate vertices on either side of the surface
-pierce to conform to the geometry. This needs to repeated until the number of
-pierces is low enough.
-#+BEGIN_EXAMPLE
-
-Conformation iteration 0
-    Number of vertices 12166
-    Number of surface hits 234
-    Number of edge hits 38
-
-..
-
-Conformation iteration 4
-    Number of vertices 12908
-    Number of surface hits 0
-    Number of edge hits 0
-
---- [ cpuTime 5.46 s, delta 0.8 s, "Conformation iteration 4" ] ---
---- [ 5.46 s, mem size 114228 kB, mem peak 114228 kB, mem rss 28712 kB ] ---
-
-Total hits (0) less than limit (2), stopping iterations
-
-Storing surface conformation
-    Stored 5946 vertices
-Store size and alignment
-
-#+END_EXAMPLE
-The vertices needed to create the conformation are stored together with the size
-and alignment.
-#+BEGIN_EXAMPLE
-Time = 1
-
-Relaxation = 1
-
-Looking up target cell alignment and size
-
-Determining vertex displacements
-
-Reinserting stored feature points
-    Reinserted 32 vertices
-
-Inserting displaced tessellation
-    4328 points to insert...
-    4328 points inserted
-
-Reinserting stored surface conformation
-    Reinserted 5946 vertices
-
-Total displacement = (0.03629314022 0.1324815449 -0.2774017193)
-Total distance = 159.3482907
-
-ExecutionTime = 8.16 s  ClockTime = 8 s
-
-
-Time = 2
-
-Relaxation = 0.9875
-
-#+END_EXAMPLE
-