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 or in ASCII text files using Gmsh's own scripting language.

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, 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, ...).
-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 scaling factor to the mesh characteristic lengths in the model.
-clmin float: Set minimum characteristic length.
-clmax float: Set maximum characteristic length.
-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@ulg.ac.be) and Jean-Francois Remacle (jean-francois.remacle@uclouvain.be).