generate_mesh

Builds a mesh with Gmsh: a rectangle, an L-shape, a plate with a hole, a channel, or your own shape.

Group: Run.

Parameters

Parameter	Type	Required	Default
geometry	string	yes
mesh_size	number	no	0.1
output_dir	string	no	''
params	string	no	''

What the model reads

The text below is the tool's own description, exactly as the AI model receives it.

Show the full description

Generate a mesh using Gmsh for non-trivial geometries.

THE SHAPE IS YOURS TO SET. Each geometry below has DIMENSIONS, and
`params` sets them. Without it you get this server's defaults, which
are one particular published configuration and almost certainly not
the one in your problem -- so the reply always states the dimensions
it actually built, whether you passed any or not.

Args:
    geometry: One of the built-in geometries:
        - "l_domain"          — 2D L-shaped domain. FIXED at
          [-1,1]^2 minus [0,1]x[-1,0] (it matches deal.II's
          hyper_L(-1,1)); it takes no shape parameters, and asking
          for some is refused rather than ignored.
        - "plate_with_hole"   — 2D plate with circular hole.
          params: radius, width, height.
        - "channel_cylinder"  — 2D channel with cylindrical
          obstacle. params: cyl_radius, cyl_center ([x, y]),
          channel_length, channel_height.
        (No "custom" passthrough yet — passing any other name
        returns a 'Unknown geometry' message with this list.)
    mesh_size: Target element size
    output_dir: Where to save (auto if empty)
    params: JSON object of the shape parameters above, e.g.
        {"channel_length": 5.0, "channel_height": 1.0,
         "cyl_center": [1.0, 0.5], "cyl_radius": 0.1}. A key this
        geometry does not take is REFUSED with the list of the ones
        it does -- never dropped, because a dropped key hands you the
        default geometry while you believe you asked for another.