mkgeo_ball(1rheolef) rheolef-6.1 mkgeo_ball(1rheolef)
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 out-
put.
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 conver-
gence properties of isoparametric high order elements (order >= 3). The -nofix option skip this correction: this option is avail-
able 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)
rheolef-6.1 rheolef-6.1 mkgeo_ball(1rheolef)