pygeon.grids.refinement module

pygeon.grids.refinement.barycentric_split(sd)[source]

This function constructs a new grid where each original cell is split into (dim+1) subcells by introducing a new node at the cell center and connecting it to the original cell’s nodes.

Parameters:

sd (pg.Grid) – The input grid split.

Returns:

A new grid object representing the barycentric split of the input grid.

Return type:

pg.Grid

pygeon.grids.refinement.compute_cell_faces(sd, face_nodes)[source]

Computes the mapping between cells and their associated faces (including new faces created by refinement) for a given grid structure.

Parameters:

  • sd (pg.Grid) – The input grid.

  • face_nodes (sps.csc_array) – Connectivity matrix.

Returns:

A sparse matrix representing the mapping between the faces and cells, including orientation.

Return type:

sps.csc_array

pygeon.grids.refinement.compute_face_nodes(sd, new_nodes)[source]

Compute the connectivity between new faces and nodes.

Parameters:

  • sd (pg.Grid) – The input grid.

  • new_nodes (np.ndarray) – Array of new node indices.

Returns:

A sparse array in CSC format where each entry (i, j) indicates that node i is connected to face j in the refined grid.

Return type:

sps.csc_array