flow123d_version: 3.1.0
problem: !Coupling_Sequential
  description: Operation with unknown region set .side at address /problem/solute_equation/output_stream/observe_points/0
  mesh:
    mesh_file: ../00_mesh/prism_3el.msh
  flow_equation: !Flow_Darcy_LMH
    nonlinear_solver:
      linear_solver: !Petsc
        r_tol: 1.0e-10
        a_tol: 1.0e-10
    input_fields:
      - region: ALL
        conductivity: 1e-6
    balance: {}
    output:
      fields:
        - velocity_p0
    output_stream:
      format: !gmsh
    # duplicit record
    balance:
      cumulative: true
