1MMG3D(1) BSD General Commands Manual MMG3D(1)
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4 mmg3d — Adaptation and optimization of a tetrahedral mesh and implicit
5 domain meshing.
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8 mmg3d ⟨mesh_file⟩ [output_file] [-sol ⟨solution_file⟩]
9 [-met ⟨metric_file⟩] [-h] [-v] [-m ⟨n⟩] [-d] [-val] [-default] [-A]
10 [-ar ⟨x⟩ | -nr] [-hmin ⟨x⟩] [-hmax ⟨x⟩] [-hsiz ⟨x⟩] [-hausd ⟨x⟩]
11 [-hgrad ⟨x⟩] [-hgradreq ⟨x⟩] [-rmc x] [-opnbdy] [-lag ⟨n⟩] [-ls x]
12 [-nofem] [-noinsert] [-nomove] [-noswap] [-nosurf] [-nosizreq]
13 [-nreg] [-nsd] [-optim] [-optimLES] [-octree ⟨n⟩] [-rn ⟨n⟩]
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16 The mmg3d application is dedicated to tetrahedral remeshing. Both sur‐
17 face and volume mesh are modified.
18 By defaults it performs mesh modifications in order to control the sur‐
20 face approximation.
21 Providing a metric file, it adapts the mesh to the prescribed sizes at
22 nodes.
23 Providing a level-set file containing the values of the level-set func‐
24 tion at the mesh nodes, the -ls option allows to explicitly mesh an im‐
25 plicit domain.
26 Without metric file, the -optim option allow to improve the mesh quality
27 with respect to the initial mesh size. -optimLES option allow to improve
28 strongly the isotropic mesh quality for LES simulations.
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31 1. Generic options:
32 -h Print help.
33 -v ⟨n⟩ Tune level of verbosity.
34 Takes values between -1 and 10.
35 -m ⟨n⟩ Set maximal memory size to n MBytes.
36 -d Turn on debug mode.
37 -default Write a local parameter file (with extension
38 .mmg3d) with setted values.
39 -val Print the default parameters values.
40 2. File specifications:
42 -in ⟨mesh_file⟩ Input triangulation.
43 -out ⟨output_file⟩ Output triangulation.
44 -sol ⟨solution_file⟩ Load metric, displacement or level-set file.
45 -met ⟨metric_file⟩ Load metric file in level-set mode.
46 3. Mode specifications (default is mesh adaptation):
48 -lag ⟨n⟩ Lagrangian mesh displacement according to
49 mode 0 ( n=0 ), 1 ( n=1 ) or 2 ( n=2 ). This
50 option is only available with the USE_ELAS
51 compilation flag. The LinearElasticity li‐
52 brary must be founded to activate this flag.
53 -ls x Create mesh of isovalue x (0.0 if x is not
54 provided).
55 4. Parameters:
57 -A Enable anisotropy (without metric file).
58 -ar ⟨x⟩ | -nr Threshold for angle detection or sharp fea‐
59 tures detection disabling.
60 -hmin ⟨x⟩ Minimal mesh size.
61 -hmax ⟨x⟩ Maximal mesh size.
62 -hsiz ⟨x⟩ Constant mesh size.
63 -hausd ⟨x⟩ Control the Hausdorff distance between the
64 surface mesh and the underlying surface ge‐
65 ometry.
66 -hgrad ⟨x⟩ Control the gradation.
67 -hgradreq ⟨x⟩ Control the gradation from required entities
68 toward others.
69 -rmc x Remove componants whose volumic fraction is
70 less than x (1.e-5 if x is not provided) of
71 the whole mesh volume (level-set mode).
72 -opnbdy Preserve input triangles at the interface of
73 two domains of the same reference.
74 -nofem Do not force Mmg to create a finite element
75 mesh.
76 -noinsert No point insertion/deletion.
77 -nomove No point relocation
78 -nosurf No surface modifications.
79 -noswap No edge or face flipping.
80 -nosizreq No imposition of the size of required edges
81 over required vertices.
82 -nreg Normal regularization using laplacian - an‐
83 tilaplacian smoothing.
84 -nsd ⟨n⟩ Save the subdomain of index n (default is
85 n=0 which save all subdomains).
86 -octree ⟨n⟩ Specify the maximal number of point per oc‐
87 tree cell (only available without the
88 PATTERN compilation flag).
89 -optim Mesh improvement with respect to the initial
90 mesh size.
91 -optimLES Strong isotropic mesh optimization for LES
92 computations.
93 -rn ⟨n⟩ Turn on ( n=1 ) or off ( n=0 ) the renumber‐
94 ing using the SCOTCH library (only available
95 with the USE_SCOTCH compilation flag and if
96 the scotch library is founded).
97
99 mmg3d returns:
100 • the 0 value if successful;
101 • the 1 value if the process fail but can save a conform mesh;
102 • the 2 value if the process fail and can't save a comform mesh.
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105 mmgs(1) mmg2d(1)
106mmg3d May 04, 2015 mmg3d