Glossary#
This page contains definitions for various terminology and abbreviations used throughout opensg documentation and code.
Terminology#
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Mesh: A collection of cells (e.g., triangles, quadrilaterals in 2D, or tetrahedrons, hexahedrons in 3D) representing a discretized computational domain. A dolfinx.mesh.Mesh object encapsulates both the geometry and topology of this mesh.
Cell: A fundamental element of a mesh (e.g., a triangle in 2D, tetrahedron in 3D) that divides the domain into discrete parts for FEA computations.
Facet: A boundary entity of a cell that is one dimension lower than the cell itself
Boundary Condition: A condition imposed on facets or boundaries of a mesh, such as Dirichlet boundary conditions (specifying function values on the boundary) or Neumann boundary conditions (specifying derivative values).
Connectivity: The relationship between different entities in a mesh (e.g., between vertices and cells, cells and facets). Connectivity maps define how entities are connected within a mesh.
Topology: In dolfinx, refers to the structural organization of the mesh, including the number and types of entities (vertices, edges, faces, cells) and their connectivity.