Postprocessing Module Documentation

Module: src/fem/postproc Purpose: Index of documentation for BELFEM's mesh-level postprocessing utilities

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Overview

The postproc module provides mesh-level utilities for solved meshes. It covers geometric measures (volume, surface, edge lengths), surface normals, scalar-field integration over sidesets, gradient recovery, and a ghost-mesh builder for triangulated surfaces (Surface).

This is not MaxwellPostprocessor. That class lives in src/fem/maxwell and recovers the electromagnetic fields (B, H, J, J/Jc) from the h-φ solution. That class is physics-specific; the geometric utilities here (volume, surface, normals, edge lengths, sideset integrals, gradient recovery) work on any mesh. mises_planestress() is a plane-stress elasticity routine and Surface handles TRI3 sidesets only.

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Key Classes

Class	Files	Role
Gradient	cl_Gradient.{hpp,cpp}	Gradient recovery; derives from Postprocessor
Surface	cl_Surface.{hpp,cpp}	Surface extraction and evaluation

Free Functions

Function	Header	Computes
mises_planestress()	fn_FEM_mises_planestress.hpp	von Mises stress under plane stress — stub: aborts with "missing implementation" (plane-stress C-matrix not populated)
compute_volume()	fn_Mesh_compute_volume.hpp	Volume of a block
compute_surface()	fn_Mesh_compute_surface.hpp	Area of a sideset
compute_surface_normals()	fn_Mesh_compute_surface_normals.hpp	Outward normals on a sideset
compute_edge_lengths()	fn_Mesh_compute_edge_lengths.hpp	Edge lengths
integrate_scalar_over_sidesets()	fn_Mesh_integrate_scalar_over_sidesets.hpp	Sideset integral of a scalar field

Within src/ the module currently has no compiled consumer; src/fem/kernel/staticheat.cpp includes the normals header, but its call is commented out and the driver is not built.

The module also includes two development drivers with their own main() functions: normaltest.cpp and pentatest.cpp (built only under USE_EXAMPLES). Doxyfile.in excludes them from the generated API reference with EXCLUDE_PATTERNS; they are not part of the library.

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See Also

• Source code - header files in src/fem/postproc/
• Maxwell module - MaxwellPostprocessor, the field recovery
• Mesh module - the mesh entities these utilities traverse
• FEM kernel - the Postprocessor base class

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Status: this index was written from the module's headers. The individual algorithms — in particular the gradient recovery — are not yet documented.