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# Test goal: Prepare boundary condition for interpolation
# Author: Jan Stebel
# Source for reference: qualitative

flow123d_version: 3.1.0
problem: !Coupling_Sequential
  description: Interpolated boundary condition - big cube
  mesh:
    mesh_file: ../00_mesh/cube_20x20x20.msh
  flow_equation: !Flow_Darcy_MH
    nonlinear_solver:
      linear_solver: !Petsc
        a_tol: 1.0e-12     # 1.0e-7
        r_tol: 1.0e-10     # default 
    input_fields:
      - region: .IMPLICIT_BOUNDARY
        bc_type: dirichlet
        bc_pressure: !FieldFormula
          value: x-z
      - region: BULK
        anisotropy: 1
    output:
      fields:
        - piezo_head_p0
        - pressure_p0
        - velocity_p0
    output_stream:
      file: ./large_cube.msh
      format: !gmsh
