NAME

Gmsh - 3D finite element mesh generator with built-in CAD engine and post-processor

SYNOPSIS

gmsh [file(s)] [option(s)]

DESCRIPTION

Gmsh is a 3D finite element grid generator with a build-in CAD engine and post-processor. Its design goal is to provide a fast, light and user-friendly meshing tool with parametric input and advanced visualization capabilities.

Gmsh is built around four modules: geometry, mesh, solver and post-processing. The specification of any input to these modules is done either interactively using the graphical user interface, in ASCII text files using Gmsh's own scripting language (.geo files), or using the C++, C, Python or Julia Application Programming Interface (API).

GEOMETRY OPTIONS

-0: Output model, then exit.
-tol float: set geometrical tolerance.

MESH OPTIONS

-1, -2, -3: perform 1D, 2D or 3D mesh generation, then exit.
-o file: specify output file name.
-format string: set output mesh format (auto, msh, msh1, msh2, msh4, unv, vrml, stl, mesh, bdf, med, ...).
-bin: use binary format when available.
-saveall: save all elements (discard physical group definitions)
-algo string: select mesh algorithm (meshadapt, del2d, front2d, del3d, front3d, hxt, ...).
-parametric: save nodes with their parametric coordinates.
-part int: partition the mesh after batch mesh generation.
-smooth int: set number of mesh smoothing steps.
-order int: set mesh order.
-clscale float: set global mesh element size scaling factor.
-clmin float: set minimum mesh element size.
-clmax float: set maximum mesh element size.
-rand float: set random perturbation factor.
-bgm file: load the post-processing view in file as the current background mesh.
-check: perform various consistency checks on mesh.

POST-PROCESSING OPTIONS

-combine: combine input views into multi-time-step ones.

DISPLAY OPTIONS

-n: hide all meshes and post-processing views on startup.
-fontsize int: specify the font size for the GUI.
-display string: specify display.

OTHER OPTIONS

-: parse input files, then exit.
-new: create new model before merge next file.
-merge: merge next files.
-open: ppen next files.
-a, -g, -m, -s, -p: start in automatic, geometry, mesh, solver or post-processing mode.
-pid: print pid on stdout.
-listen: always listen to incoming connection requests.
-v int: set verbosity level.
-nopopup: don't popup dialog windows in scripts.
-setnumber name value: set constant number name=value
-setstring name value: set constant string name=value
-string string: parse option string at startup.
-option file: parse option file at startup.
-convert files: Convert files into latest binary formats, then exit.
-version: show version number.
-info: show detailed version information.
-help: show help message.

AUTHORS

Christophe Geuzaine (cgeuzaine@uliege.be) and Jean-Francois Remacle (jean-francois.remacle@uclouvain.be).