xenial (1) mkgeo_ball.1rheolef.gz

Provided by: rheolef_6.6-1build2_amd64 bug

NAME
       mkgeo_ball -- build an unstructured mesh of an ellipsoid, in 2d or 3d


SYNOPSIS
               mkgeo_ball options [n]


EXAMPLE
       The following command build a triangle based 2d unstructured mesh of the unit ball

               mkgeo_ball -t 10 > ball-10.geo
               geo -mayavi ball-10.geo

       or in one comand line:

               mkgeo_ball -t 10 | geo -mayavi -


DESCRIPTION
       This  command is usefull when testing programs on simple geometries.  Invocation is similar to mkgeo_grid
       (see mkgeo_grid(1), mkgeo_ugrid(1)).  It calls  gmsh  as  unstructured  mesh  generator.   It  avoid  the
       preparation  of an input file for a mesh generator.  The optional n argument is an integer that specifies
       the subdivision in each direction. By default n=10.  The mesh files goes on standard output.


ELEMENT TYPE OPTIONS
       -t     2d mesh using triangles.

       -q     2d mesh using quadrangles.

       -tq    2d mesh using both triangles and quadrangles.


THE MESH ORDER
       -order int
              The polynomial pproximation mesh order, for the curved boundary, as defined by gmsh.   Defualt  is
              order=1.


THE GEOMETRY
       The  geometry  can  be ellipse/ellipsoid inscribted in the [a,b]x[c,d] rectangle or the [a,b]x[c,d]x[f,g]
       parallelotope. By default a=c=f=-1 and b=d=g=1, thus, the unit balls are considered.

       -s     Only a surface mesh is generated: a curved line in 2d or a curved surface  mesh  in  3d.   In  3d,
              supports both '-t' and '-q' options.

       -a float

       -b float

       -c float

       -d float

       -f float

       -g float


BOUNDARY DOMAINS
       The meshes defines a domain named boundary that groups all boundary sides.


OTHERS OPTIONS
       -fix

       -nofix By  default,  internal  face  and  volume node from gmsh are recomputed, since they have incorrect
              coordinate that destroy the convergence properties of isoparametric high order elements (order  >=
              3).  The -nofix option skip this correction: this option is available for test purpose.

       -clean clear temporary files (this is the default).

       -noclean
              does not clear temporary files.

       -verbose

       -noverbose
              print intermediate commands and information messages.


SEE ALSO
       mkgeo_grid(1), mkgeo_ugrid(1)