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Running the Test Case

  • Run the computation:
    # icoFoam
    /*---------------------------------------------------------------------------*\
    | =========                 |                                                 |
    | \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
    |  \\    /   O peration     | Version:  2.2.1                                |
    |   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
    |    \\/     M anipulation  |                                                 |
    \*---------------------------------------------------------------------------*/
    Build  : 2.2.1
    Exec   : icoFoam
    Date   : Aug 01 2013
    Time   : 12:00:00
    Host   : $HOSTNAME
    PID    : $
    Case   : $FOAM_RUN/cavity
    nProcs : 1
    sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
    fileModificationChecking : Monitoring run-time modified files using timeStampMaster
    allowSystemOperations : Disallowing user-supplied system call operations
    
    // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
    Create time
    
    Create mesh for time = 0
    
    Reading transportProperties
    
    Reading field p
    
    Reading field U
    
    Reading/calculating face flux field phi
    
  • Reading mesh, physical constants, initial and boundary conditions
  • The computation starts, iterations are separated with time information
    Starting time loop
    
    Time = 0.005
    
    Courant Number mean: 0 max: 0
    DILUPBiCG:  Solving for Ux, Initial residual = 1, Final residual = 2.96338e-06, No Iterations 8
    DILUPBiCG:  Solving for Uy, Initial residual = 0, Final residual = 0, No Iterations 0
    DICPCG:  Solving for p, Initial residual = 1, Final residual = 7.55402e-07, No Iterations 35
    time step continuity errors : sum local = 5.03809e-09, global = 1.36319e-19, cumulative = 1.36319e-19
    DICPCG:  Solving for p, Initial residual = 0.523591, Final residual = 9.72352e-07, No Iterations 34
    time step continuity errors : sum local = 1.07766e-08, global = 6.72994e-19, cumulative = 8.09314e-19
    ExecutionTime = 0.01 s  ClockTime = 0 s
    
    Time = 0.01
    
    Courant Number mean: 0.0976805 max: 0.585722
    DILUPBiCG:  Solving for Ux, Initial residual = 0.148584, Final residual = 7.15711e-06, No Iterations 6
    DILUPBiCG:  Solving for Uy, Initial residual = 0.256618, Final residual = 8.94127e-06, No Iterations 6
    DICPCG:  Solving for p, Initial residual = 0.379232, Final residual = 3.38648e-07, No Iterations 34
    time step continuity errors : sum local = 3.15698e-09, global = -8.13946e-20, cumulative = 7.27919e-19
    DICPCG:  Solving for p, Initial residual = 0.286937, Final residual = 5.99637e-07, No Iterations 33
    time step continuity errors : sum local = 6.08774e-09, global = 5.265e-20, cumulative = 7.80569e-19
    ExecutionTime = 0.01 s  ClockTime = 0 s
    
    Time = 0.015
    
    Courant Number mean: 0.144685 max: 0.758286
    DILUPBiCG:  Solving for Ux, Initial residual = 0.0448669, Final residual = 2.39894e-06, No Iterations 6
    DILUPBiCG:  Solving for Uy, Initial residual = 0.0782408, Final residual = 1.45948e-06, No Iterations 7
    DICPCG:  Solving for p, Initial residual = 0.109591, Final residual = 5.81093e-07, No Iterations 32
    time step continuity errors : sum local = 4.70049e-09, global = -4.48828e-19, cumulative = 3.31741e-19
    DICPCG:  Solving for p, Initial residual = 0.0826507, Final residual = 7.26561e-07, No Iterations 31
    time step continuity errors : sum local = 5.95385e-09, global = 6.69768e-19, cumulative = 1.00151e-18
    ExecutionTime = 0.02 s  ClockTime = 0 s
    
  • The last three iterations are following:
    Time = 0.49
    
    Courant Number mean: 0.222158 max: 0.852134
    DILUPBiCG:  Solving for Ux, Initial residual = 2.09588e-07, Final residual = 2.09588e-07, No Iterations 0
    DILUPBiCG:  Solving for Uy, Initial residual = 4.59868e-07, Final residual = 4.59868e-07, No Iterations 0
    DICPCG:  Solving for p, Initial residual = 8.08884e-07, Final residual = 8.08884e-07, No Iterations 0
    time step continuity errors : sum local = 9.1113e-09, global = -6.21295e-19, cumulative = 1.23378e-18
    DICPCG:  Solving for p, Initial residual = 9.46436e-07, Final residual = 9.46436e-07, No Iterations 0
    time step continuity errors : sum local = 1.02383e-08, global = 8.16345e-19, cumulative = 2.05013e-18
    ExecutionTime = 0.26 s  ClockTime = 0 s
    
    Time = 0.495
    
    Courant Number mean: 0.222158 max: 0.852134
    DILUPBiCG:  Solving for Ux, Initial residual = 1.99665e-07, Final residual = 1.99665e-07, No Iterations 0
    DILUPBiCG:  Solving for Uy, Initial residual = 4.36311e-07, Final residual = 4.36311e-07, No Iterations 0
    DICPCG:  Solving for p, Initial residual = 1.0746e-06, Final residual = 3.53797e-07, No Iterations 1
    time step continuity errors : sum local = 5.37651e-09, global = -6.05083e-19, cumulative = 1.44504e-18
    DICPCG:  Solving for p, Initial residual = 6.81574e-07, Final residual = 6.81574e-07, No Iterations 0
    time step continuity errors : sum local = 8.06059e-09, global = 1.8016e-19, cumulative = 1.6252e-18
    ExecutionTime = 0.26 s  ClockTime = 0 s
    
    Time = 0.5
    
    Courant Number mean: 0.222158 max: 0.852134
    DILUPBiCG:  Solving for Ux, Initial residual = 1.89493e-07, Final residual = 1.89493e-07, No Iterations 0
    DILUPBiCG:  Solving for Uy, Initial residual = 4.14522e-07, Final residual = 4.14522e-07, No Iterations 0
    DICPCG:  Solving for p, Initial residual = 1.06665e-06, Final residual = 3.39604e-07, No Iterations 1
    time step continuity errors : sum local = 5.25344e-09, global = -1.05077e-18, cumulative = 5.74436e-19
    DICPCG:  Solving for p, Initial residual = 5.36118e-07, Final residual = 5.36118e-07, No Iterations 0
    time step continuity errors : sum local = 6.86432e-09, global = 6.34696e-19, cumulative = 1.20913e-18
    ExecutionTime = 0.27 s  ClockTime = 0 s
    
    End
    

Subsections