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Header
Mesh DB "." "square"
End
Simulation
Max Output Level = 5
Coordinate System = Cartesian
Simulation Type = Transient
! Crank-Nicolsen
Timestepping Method = newmark
Newmark Beta = 0.5
Bdf Order = 1
$steps=400
Timestep Sizes = $pi/steps
! remove the 10 for full circle
Timestep Intervals = $steps/10
Output Intervals = 4
Steady State Max Iterations = 1
$ FilePrefix = "case"
End
Body 1
Equation = 1
Material = 1
Body Force = 1
Initial Condition = 1
End
Equation 1
Active Solvers(2) = 1 2
Convection = constant
End
Solver 1
Equation = Advection Diffusion
Variable = Cons
Procedure = "AdvectionDiffusion" "AdvectionDiffusionSolver"
Linear System Solver = Iterative
Linear System Iterative Method = BiCGStab
Linear System Max Iterations = 200
Linear System Convergence Tolerance = 1.0e-10
Linear System Preconditioning = ILU0
Linear System Residual Output = 20
Nonlinear System Max Iterations = 1
Nonlinear System Convergence Tolerance = 1.0e-4
Nonlinear System Newton After Tolerance = 1.0e-3
Nonlinear System Newton After Iterations = 10
Nonlinear System Relaxation Factor = 1
Steady State Convergence Tolerance = 1.0e-4
! Look good on paper, but in practice not particularly good performance
! fct: Linear System Iterative Method = richardson
! fct: Linear System Scaling = False
! We are maybe not so interested in the change of the corrector
fct: Skip Compute Nonlinear Change = Logical True
Solver Timing = True
! Stabilize = True
! Bubbles = True
Bubbles = False
Stabilize = False
! Parameters for the flux corrected transport
Linear System FCT = Logical True
! The following are optional
! FCT Correction Symmetric = Logical True
! FCT Correction Skip = Logical False
! FCT Correction Save = Logical True
Solver Timing = True
End
Solver 2
! Exec Solver = after saving
Exec Solver = never
Equation = "result output"
Procedure = "ResultOutputSolve" "ResultOutputSolver"
Output File Name = $FilePrefix$
Vtu Format = Logical True
Single Precision = Logical True
End
Solver 3
Exec Solver = Never
Equation = "saverange"
Procedure = "SaveData" "SaveScalars"
Filename = $FilePrefix$.dat
Variable 1 = Cons
Operator 1 = min
Operator 2 = max
Operator 3 = int mean
Operator 4 = min
Operator 5 = max
Operator 6 = int mean
Operator 7 = Cpu Time
End
Initial Condition 1
Name = "InitialCondition"
Cons = Variable time
Real Procedure "InitDist" "InitDist"
End
Material 1
Density = 1.0
Cons Diffusivity = Real 1.0e-6
! Constant velocity
! Convection Velocity 1 = Real 0.1
! Convection Velocity 2 = Real 0.05
! Rotation around origin
Convection Velocity 1 = Opposes Coordinate 2
Convection Velocity 2 = Equals Coordinate 1
End
Boundary Condition 1
Name = "BCs"
Target Boundaries(4) = 1 2 3 4
Cons = Real 0.0
End
Solver 1 :: Reference Norm = Real 0.258982
RUN
!End Of File
