This test sets up a simple boundary monitor with known values to test machinery

domain/boundaryMonitorTest2D.yaml

---
test:
  # a unique test name for this integration tests
  name: boundaryMonitorTest2D
  ranks: 2
  asserts:
    # create a default assert that compares the log file
    - "inputs/domain/boundaryMonitorTest2D/boundaryMonitorTest2D.txt"
    - !testingResources::asserts::TextFileAssert
      expected: "inputs/domain/boundaryMonitorTest2D/bottomBoundary_monitor.xmf"
      actual: "bottomBoundary_monitor.xmf"

# metadata for the simulation
environment:
  title: _boundaryMonitorTest2D
  tagDirectory: false
arguments:
  # ask petsc to label the boundary values
  dm_plex_separate_marker: ""
# set up the time stepper responsible for marching in time
timestepper:
  name: theMainTimeStepper
  arguments:
    ts_type: rk
    ts_max_time: 100000
    ts_max_steps: 50
    ts_dt: 1
    ts_adapt_type: none
  # io controls how often the results are saved to a file for visualization and restart
  io:
    interval: 0 # results (including the boundary monitor) are saved at every 5 steps.  In real simulations this should be much larger.

  # Create a simple box mesh to start
  domain: !ablate::domain::BoxMesh
    name: simpleBoxField
    faces: [ 25, 25 ]
    lower: [ -.5, -.5]
    upper: [ .5, .5 ]
    simplex: false
    # pass in these options to petsc when setting up the domain.  Using an option list here prevents command line arguments from being seen.
    options:
      dm_distribute: true # turn off default dm_distribute so that we can extrude label first
      dm_distribute_overlap: 0
    modifiers:
      # if using mpi, this modifier distributes cells
      - !ablate::domain::modifiers::DistributeWithGhostCells
        ghostCellDepth: 2

      # define a sphere in the middle of the domain
      - !ablate::domain::modifiers::CreateLabel
        region: &insideRegion
          name: inside
        function: !ablate::mathFunctions::geom::Sphere
          &insideSphere
          center: [0.0, 0.0]
          radius: 0.25

      # define the rest of the domain
      - !ablate::domain::modifiers::CreateLabel
        region: &outsideRegion
          name: outside
        function: !ablate::mathFunctions::geom::Inverse
          geometry: *insideSphere

      # tag the label boundary
      - !ablate::domain::modifiers::TagLabelInterface
        leftRegion: *insideRegion
        rightRegion: *outsideRegion
        boundaryFaceRegion:
          &boundaryFaceRegion
          name:  boundaryFaces
        leftBoundaryCellRegion:
          &boundaryCellRegion
          name: boundaryCells

      # create ghost boundary cells needed for the fvm method
      - !ablate::domain::modifiers::GhostBoundaryCells

    fields:
      # all fields must be defined before solvers.  The ablate::finiteVolume::CompressibleFlowFields is a helper
      # class that creates the required fields for the compressible flow solver (rho, rhoE, rhoU, ...)
      - !ablate::finiteVolume::CompressibleFlowFields
        eos: !ablate::eos::PerfectGas &eos
          parameters:
            gamma: 1.4
            Rgas: 287.0

  # set the initial conditions of the flow field
  initialization:
    # The ablate::finiteVolume::CompressibleFlowFields is a helper
    # class that creates the required fields for the compressible flow solver (rho, rhoE, rhoU, ...)
    - !ablate::finiteVolume::fieldFunctions::Euler
      state:
        &flowFieldState
        eos: *eos
        pressure: 101325.0
        temperature: 300
        velocity: "0.0, 0.0"
solvers:
  # use a boundary solver to describe the solver in the boundary cells and output the solution
  - !ablate::boundarySolver::BoundarySolver
    id: bottomBoundary
    region: *boundaryCellRegion
    fieldBoundary: *boundaryFaceRegion
    processes:
      # define an ArbitrarySource processes of type Face that outputs two variables
      - !ablate::boundarySolver::physics::ArbitrarySource
        functions:
          heatFlux: x*t
          regRate: x*x*t
        type: Face
    monitors:
      # a monitor is needed to write to a hdf5
      - !ablate::monitors::BoundarySolverMonitor