mmg3d - Man Page

Adaptation and optimization of a tetrahedral mesh and implicit domain meshing.

Synopsis

mmg3dmesh_file⟩ [output_file] [-sol solution_file⟩] [-met metric_file⟩] [-h] [-v] [-m n⟩] [-d] [-val] [-default] [-A] [-ar x⟩ | -nr] [-hmin x⟩] [-hmax x⟩] [-hsiz x⟩] [-hausd x⟩] [-hgrad x⟩] [-hgradreq x⟩] [-rmc x] [-opnbdy] [-lag n⟩] [-ls x] [-nofem] [-noinsert] [-nomove] [-noswap] [-nosurf] [-nosizreq] [-nreg] [-nsd] [-optim] [-optimLES] [-octree n⟩] [-rn n⟩]

Description

The mmg3d application is dedicated to tetrahedral remeshing. Both surface and volume mesh are modified.

By defaults it performs mesh modifications in order to control the surface approximation.
Providing a metric file, it adapts the mesh to the prescribed sizes at nodes.
Providing a level-set file containing the values of the level-set function at the mesh nodes, the -ls option allows to explicitly mesh an implicit domain.
Without metric file, the -optim option allow to improve the mesh quality with respect to the initial mesh size. -optimLES option allow to improve strongly the isotropic mesh quality for LES simulations.

Command Line Arguments

  1. Generic options:

    -h

    Print help.

    -v ⟨n⟩

    Tune level of verbosity.
    Takes values between -1 and 10.

    -m ⟨n⟩

    Set maximal memory size to n MBytes.

    -d

    Turn on debug mode.

    -default

    Write a local parameter file (with extension .mmg3d) with setted values.

    -val

    Print the default parameters values.

  2. File specifications:

    -in ⟨mesh_file⟩

    Input triangulation.

    -out ⟨output_file⟩

    Output triangulation.

    -sol ⟨solution_file⟩

    Load metric, displacement or level-set file.

    -met ⟨metric_file⟩

    Load metric file in level-set mode.

  3. Mode specifications (default is mesh adaptation):

    -lag ⟨n⟩

    Lagrangian mesh displacement according to mode 0 ( n=0 ), 1 ( n=1 ) or 2 ( n=2 ). This option is only available with the USE_ELAS compilation flag. The LinearElasticity library must be founded to activate this flag.

    -ls x

    Create mesh of isovalue x (0.0 if x is not provided).

  4. Parameters:

    -A

    Enable anisotropy (without metric file).

    -ar ⟨x⟩ | -nr

    Threshold for angle detection or sharp features detection disabling.

    -hmin ⟨x⟩

    Minimal mesh size.

    -hmax ⟨x⟩

    Maximal mesh size.

    -hsiz ⟨x⟩

    Constant mesh size.

    -hausd ⟨x⟩

    Control the Hausdorff distance between the surface mesh and the underlying surface geometry.

    -hgrad ⟨x⟩

    Control the gradation.

    -hgradreq ⟨x⟩

    Control the gradation from required entities toward others.

    -rmc x

    Remove componants whose volumic fraction is less than x (1.e-5 if x is not provided) of the whole mesh volume (level-set mode).

    -opnbdy

    Preserve input triangles at the interface of two domains of the same reference.

    -nofem

    Do not force Mmg to create a finite element mesh.

    -noinsert

    No point insertion/deletion.

    -nomove

    No point relocation

    -nosurf

    No surface modifications.

    -noswap

    No edge or face flipping.

    -nosizreq

    No imposition of the size of required edges over required vertices.

    -nreg

    Normal regularization using laplacian - antilaplacian smoothing.

    -nsd ⟨n⟩

    Save the subdomain of index n (default is n=0 which save all subdomains).

    -octree ⟨n⟩

    Specify the maximal number of point per octree cell (only available without the PATTERN compilation flag).

    -optim

    Mesh improvement with respect to the initial mesh size.

    -optimLES

    Strong isotropic mesh optimization for LES computations.

    -rn ⟨n⟩

    Turn on ( n=1 ) or off ( n=0 ) the renumbering using the SCOTCH library (only available with the USE_SCOTCH compilation flag and if the scotch library is founded).

Return Values

mmg3d returns:

See Also

mmgs(1) mmg2d(1)

Referenced By

mmg2d(1), mmgs(1).

May 4, 2015