An example for iteration adaptive timestepper in multiapp (idaholab#7842

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lindsayad · Feb 6, 2018 · 2943e9d · 2943e9d
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diff --git a/test/tests/multiapps/multiapp_iterative_adaptive/adaptiveDT.i b/test/tests/multiapps/multiapp_iterative_adaptive/adaptiveDT.i
@@ -0,0 +1,60 @@
+[Mesh]
+  type = GeneratedMesh
+  dim = 2
+  xmin = 0
+  xmax = 1
+  ymin = 0
+  ymax = 1
+[]
+
+[Variables]
+  active = 'u'
+
+  [./u]
+    order = FIRST
+    family = LAGRANGE
+  [../]
+[]
+
+[Kernels]
+  active = 'diff'
+
+  [./diff]
+    type = Diffusion
+    variable = u
+  [../]
+[]
+
+[BCs]
+  active = 'left right'
+
+  [./left]
+    type = DirichletBC
+    variable = u
+    boundary = 1
+    value = 0
+  [../]
+
+  [./right]
+    type = DirichletBC
+    variable = u
+    boundary = 2
+    value = 1
+  [../]
+[]
+
+[Executioner]
+  type = Transient
+  start_time = 0
+  end_time = 0.006
+  [./TimeStepper]
+    type = IterationAdaptiveDT
+    dt = 0.001
+  [../]
+  nl_abs_tol = 1.0e-8
+[]
+
+[Outputs]
+  file_base = out
+  exodus = true
+[]
diff --git a/test/tests/multiapps/multiapp_iterative_adaptive/constDT.i b/test/tests/multiapps/multiapp_iterative_adaptive/constDT.i
@@ -0,0 +1,57 @@
+[Mesh]
+  type = GeneratedMesh
+  dim = 2
+  xmin = 0
+  xmax = 1
+  ymin = 0
+  ymax = 1
+[]
+
+[Variables]
+  active = 'u'
+
+  [./u]
+    order = FIRST
+    family = LAGRANGE
+  [../]
+[]
+
+[Kernels]
+  active = 'diff'
+
+  [./diff]
+    type = Diffusion
+    variable = u
+  [../]
+[]
+
+[BCs]
+  active = 'left right'
+
+  [./left]
+    type = DirichletBC
+    variable = u
+    boundary = 1
+    value = 0
+  [../]
+
+  [./right]
+    type = DirichletBC
+    variable = u
+    boundary = 2
+    value = 1
+  [../]
+[]
+
+[Executioner]
+  type = Transient
+  start_time = 0
+  end_time = 0.006
+  dt = 0.001
+  nl_abs_tol = 1.0e-8
+[]
+
+[Outputs]
+  file_base = out
+  exodus = true
+[]
diff --git a/test/tests/multiapps/multiapp_iterative_adaptive/master.i b/test/tests/multiapps/multiapp_iterative_adaptive/master.i
@@ -0,0 +1,65 @@
+[Mesh]
+  type = GeneratedMesh
+  dim = 2
+  xmin = 0
+  xmax = 1
+  ymin = 0
+  ymax = 1
+[]
+
+[Variables]
+  active = 'u'
+
+  [./u]
+    order = FIRST
+    family = LAGRANGE
+  [../]
+[]
+
+[Kernels]
+  active = 'diff'
+
+  [./diff]
+    type = Diffusion
+    variable = u
+  [../]
+[]
+
+[BCs]
+  active = 'left right'
+
+  [./left]
+    type = DirichletBC
+    variable = u
+    boundary = 1
+    value = 0
+  [../]
+
+  [./right]
+    type = DirichletBC
+    variable = u
+    boundary = 2
+    value = 1
+  [../]
+[]
+
+[MultiApps]
+  [./dummy]
+    type = TransientMultiApp
+    input_files = adaptiveDT.i
+    execute_on = timestep_end
+  [../]
+[]
+
+[Executioner]
+  type = Transient
+  start_time = 0
+  end_time = 0.006
+  dt = 0.006
+  nl_abs_tol = 1.0e-8
+[]
+
+[Outputs]
+  file_base = out
+  exodus = true
+[]