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 [-lssurf x] [-nofem] [-noinsert] [-nomove] [-noswap] [-nosurf]
13 [-nosizreq] [-nreg] [-xreg] [-nsd] [-optim] [-optimLES]
14 [-octree ⟨n⟩] [-rn ⟨n⟩]
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17 The mmg3d application is dedicated to tetrahedral remeshing. Both sur‐
18 face and volume mesh are modified.
19 By defaults it performs mesh modifications in order to control the sur‐
21 face approximation.
22 Providing a metric file, it adapts the mesh to the prescribed sizes at
23 nodes.
24 Without metric file, the -optim option allows to improve the mesh quality
25 with respect to the initial mesh size. -optimLES option allows to im‐
26 prove strongly the isotropic mesh quality for LES simulations.
27 Providing a level-set file containing the values of the level-set func‐
28 tion at the mesh nodes, the -ls option allows to explicitly mesh an im‐
29 plicit domain and the -lssurf option splits mesh boundaries on a provided
30 isovalue.
31 Providing a displacement file -lag option applies a lagrangian displace‐
32 ment to boundary mesh nodes.
33
36 1. Generic options:
37 -h Print help.
38 -v ⟨n⟩ Tune level of verbosity.
39 Takes values between -1 and 10.
40 -m ⟨n⟩ Set maximal memory size to n MBytes.
41 -d Turn on debug mode.
42 -default Write a local parameter file (with extension
43 .mmg3d) with setted values.
44 -val Print the default parameters values.
45 2. File specifications:
47 -in ⟨mesh_file⟩ Input triangulation.
48 -out ⟨output_file⟩ Output triangulation.
49 -sol ⟨solution_file⟩ Load metric, displacement or level-set file.
50 -met ⟨metric_file⟩ Load metric file in level-set mode.
51 3. Mode specifications (default is mesh adaptation):
53 -lag ⟨n⟩ Lagrangian mesh displacement according to
54 mode 0 ( n=0 ), 1 ( n=1 ) or 2 ( n=2 ). This
55 option is only available with the USE_ELAS
56 compilation flag. The LinearElasticity li‐
57 brary must be founded to activate this flag.
58 -ls x Create mesh of isovalue x (0.0 if x is not
59 provided).
60 -lssurf x Split boundary mesh on isovalue x (0.0 if x
61 is not provided).
62 4. Parameters:
64 -A Enable anisotropy (without metric file).
65 -ar ⟨x⟩ | -nr Threshold for angle detection or sharp fea‐
66 tures detection disabling.
67 -hmin ⟨x⟩ Minimal mesh size.
68 -hmax ⟨x⟩ Maximal mesh size.
69 -hsiz ⟨x⟩ Constant mesh size.
70 -hausd ⟨x⟩ Control the Hausdorff distance between the
71 surface mesh and the underlying surface ge‐
72 ometry.
73 -hgrad ⟨x⟩ Control the gradation.
74 -hgradreq ⟨x⟩ Control the gradation from required entities
75 toward others.
76 -rmc x Remove componants whose volumic fraction is
77 less than x (1.e-5 if x is not provided) of
78 the whole mesh volume (level-set mode).
79 -opnbdy Preserve input triangles at the interface of
80 two domains of the same reference.
81 -nofem Do not force Mmg to create a finite element
82 mesh.
83 -noinsert No point insertion/deletion.
84 -nomove No point relocation
85 -nosurf No surface modifications.
86 -noswap No edge or face flipping.
87 -nosizreq No imposition of the size of required edges
88 over required vertices.
89 -nreg Normal regularization using laplacian - an‐
90 tilaplacian smoothing.
91 -xreg Vertex coordinates regularization using
92 laplacian - antilaplacian smoothing.
93 -nsd ⟨n⟩ Save the subdomain of index n (default is
94 n=0 which save all subdomains).
95 -octree ⟨n⟩ Specify the maximal number of point per oc‐
96 tree cell (only available without the
97 PATTERN compilation flag).
98 -optim Mesh improvement with respect to the initial
99 mesh size.
100 -optimLES Strong isotropic mesh optimization for LES
101 computations.
102 -rn ⟨n⟩ Turn on ( n=1 ) or off ( n=0 ) the renumber‐
103 ing using the SCOTCH library (only available
104 with the USE_SCOTCH compilation flag and if
105 the scotch library is founded).
106
108 mmg3d returns:
109 • the 0 value if successful;
110 • the 1 value if the process fail but can save a conform mesh;
111 • the 2 value if the process fail and can't save a comform mesh.
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114 mmgs(1) mmg2d(1)
115mmg3d May 04, 2015 mmg3d