Add tests (#13221)

modules/heat_conduction/test/tests/heat_conduction/min_gap/gold/min_gap_order_one.csv

@@ -0,0 +1,13 @@
+time,gap_conductance
+0.25,2
+0.5,1.75
+0.75,1.5
+1,1.25
+1.25,1
+1.5,0.8
+1.75,0.66666666666667
+2,0.57142857142857
+2.25,0.5
+2.5,0.44444444444444
+2.75,0.4
+3,0.36363636363636

modules/heat_conduction/test/tests/heat_conduction/min_gap/gold/min_gap_order_zero.csv

@@ -0,0 +1,13 @@
+time,gap_conductance
+0.25,1
+0.5,1
+0.75,1
+1,1
+1.25,1
+1.5,0.8
+1.75,0.66666666666667
+2,0.57142857142857
+2.25,0.5
+2.5,0.44444444444444
+2.75,0.4
+3,0.36363636363636

modules/heat_conduction/test/tests/heat_conduction/min_gap/min_gap.i

@@ -0,0 +1,177 @@
+[Mesh]
+  type = MeshGeneratorMesh
+  displacements = 'disp_x disp_y'
+[]
+
+[MeshGenerators]
+  [./left]
+    type = GeneratedMeshGenerator
+    dim = 2
+    nx = 2
+    ny = 3
+    xmin = -3
+    xmax = 0
+    ymin = -5
+    ymax = 5
+  [../]
+  [./right]
+    type = GeneratedMeshGenerator
+    dim = 2
+    nx = 2
+    ny = 3
+    xmin = 3
+    xmax = 6
+    ymin = -5
+    ymax = 5
+  [../]
+
+  [./merge]
+    type = MergedMeshGenerator
+    inputs = 'left right'
+  [../]
+[]
+
+[MeshModifiers]
+  [./leftleft]
+    type = SideSetsAroundSubdomain
+    block = 0
+    new_boundary = leftleft
+    normal = '-1 0 0'
+  [../]
+  [./leftright]
+    type = SideSetsAroundSubdomain
+    block = 0
+    new_boundary = leftright
+    normal = '1 0 0'
+  [../]
+
+  [./right]
+    type = SubdomainBoundingBox
+    top_right = '6 5 0'
+    bottom_left = '3 -5 0'
+    block_id = 1
+  [../]
+
+  [./rightleft]
+    type = SideSetsAroundSubdomain
+    depends_on = right
+    block = 1
+    new_boundary = rightleft
+    normal = '-1 0 0'
+  [../]
+  [./rightright]
+    type = SideSetsAroundSubdomain
+    depends_on = right
+    block = 1
+    new_boundary = rightright
+    normal = '1 0 0'
+  [../]
+[]
+
+[Variables]
+  [./temp]
+  [../]
+[]
+
+[AuxVariables]
+  [./disp_x]
+  [../]
+  [./disp_y]
+  [../]
+  [./gap_conductance]
+    order = CONSTANT
+    family = MONOMIAL
+  [../]
+[]
+
+[Functions]
+  [./disp_x]
+    type = ParsedFunction
+    value = -3+t
+  [../]
+  [./left_temp]
+    type = ParsedFunction
+    value = 1000+t
+  [../]
+[]
+
+[Kernels]
+  [./hc]
+    type = HeatConduction
+    variable = temp
+  [../]
+[]
+
+[AuxKernels]
+  [./disp_x]
+    type = FunctionAux
+    block = 1
+    variable = disp_x
+    function = disp_x
+    execute_on = 'INITIAL TIMESTEP_END'
+  [../]
+  [./gap_conductivity]
+    type = MaterialRealAux
+    boundary = leftright
+    property = gap_conductance
+    variable = gap_conductance
+    execute_on = 'INITIAL TIMESTEP_END'
+  [../]
+[]
+
+[BCs]
+  [./left]
+    type = FunctionDirichletBC
+    variable = temp
+    boundary = leftleft
+    function = left_temp
+  [../]
+  [./right]
+    type = DirichletBC
+    variable = temp
+    boundary = rightright
+    value = 400
+  [../]
+[]
+
+[ThermalContact]
+  [./left_to_right]
+    slave = leftright
+    quadrature = true
+    master = rightleft
+    variable = temp
+    min_gap = 1
+    min_gap_order = 1
+    type = GapHeatTransfer
+  [../]
+[]
+
+[Materials]
+  [./hcm]
+    type = HeatConductionMaterial
+    block = '0 1'
+    specific_heat = 1
+    thermal_conductivity = 1
+    use_displaced_mesh = true
+  [../]
+[]
+
+[Postprocessors]
+  [./gap_conductance]
+    type = PointValue
+    point = '0 0 0'
+    variable = gap_conductance
+  [../]
+[]
+
+[Executioner]
+  type = Transient
+  dt = 0.25
+  end_time = 3.0
+  solve_type = 'PJFNK'
+[]
+
+[Outputs]
+  csv = true
+  execute_on = 'TIMESTEP_END'
+[]

modules/heat_conduction/test/tests/heat_conduction/min_gap/tests

@@ -0,0 +1,20 @@
+[Tests]
+  [./min_gap_order_zero]
+    type = CSVDiff
+    csvdiff = min_gap_order_zero.csv
+    input = min_gap.i
+    cli_args = 'ThermalContact/left_to_right/min_gap_order=0 Outputs/file_base=min_gap_order_zero'
+    issues = '#13221'
+    design = 'GapConductance.md GapHeatTransfer.md'
+    requirements = 'Optionally a constant attenuation shall be applied to compute the gap conductance below a gap length threshold.'
+  [../]
+  [./min_gap_order_one]
+    type = CSVDiff
+    csvdiff = min_gap_order_one.csv
+    input = min_gap.i
+    cli_args = 'ThermalContact/left_to_right/min_gap_order=1 Outputs/file_base=min_gap_order_one'
+    issues = '#13221'
+    design = 'GapConductance.md GapHeatTransfer.md'
+    requirements = 'Optionally a linear Taylor expansion of the inverse gap length shall be applied as the attenuation to compute the gap conductance below a gap length threshold.'
+  [../]
+[]