New 399-line test file demonstrating ultimate multi-physics coupling:
- Tests 4-field system: Temperature (vertices), Displacement (vertices),
Pore pressure (cells), Electric potential (edges)
- Implements fully coupled THM-E system with off-diagonal blocks
- Demonstrates thermal-mechanical coupling (K_uT)
- Demonstrates poroelastic coupling (K_up, K_pu)
- Tests simultaneous assembly in one pass for all fields
- Validates global DOF numbering across different entity types
- Shows type-safe field access: elem.dof_indices.T, .u, .p, .φ
Ultimate demonstration of multi-field Element API for complex
coupled physics: geomechanics, CO2 sequestration, nuclear waste,
electrokinetic remediation, geothermal energy.
Jukka Aho