mesh ¶

Mesh transfer from the shared native-2D pipeline to DEVSIM.

The BoundaryMode pipeline writes the cross-section mesh in um (msh v2.2). DEVSIM's silicon physics parameters are cm-based, so the same mesh is rewritten with coordinates scaled to cm before create_gmsh_mesh loads it. Physical groups (region and contact names) are preserved verbatim — this is a unit conversion, not a second meshing path.

Functions:

line_group_points –

Node coordinates of a named dim-1 physical group of a gmsh mesh.
write_scaled_msh –

Write a copy of a gmsh v2.2 mesh with scaled node coordinates.

line_group_points ¶

line_group_points(path: str | Path, group: str) -> NDArray[float64]

Node coordinates of a named dim-1 physical group of a gmsh mesh.

Parameters:

path (str | Path) –

Mesh path (msh v2.2).
group (str) –

Physical-group name of a set of curves.

Returns:

NDArray[float64] –

The (n, 2) in-plane coordinates of the group's distinct nodes,
NDArray[float64] –

in the mesh's own unit.

Raises:

ValueError –

When the mesh holds no line group of that name, or no line cells at all.

write_scaled_msh ¶

write_scaled_msh(src: str | Path, dst: str | Path, *, scale: float = UM_TO_CM) -> Path

Write a copy of a gmsh v2.2 mesh with scaled node coordinates.

Parameters:

src (str | Path) –

Source mesh path (msh v2.2, coordinates in um).
dst (str | Path) –

Destination mesh path.
scale (float, default: UM_TO_CM ) –

Multiplicative coordinate scale (default um -> cm).

Returns:

Path –

The destination path.