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lalalala

@lalalala
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  • snappyHexMeshDict画二维网格出现锯齿状的区域
    L lalalala

    这是不是第一个时间步的网格,第二个时间步会更顺滑


  • 使用multiphaseInterFoam时,加入了动网格,出现了不收敛的情况
    L lalalala

    使用multiphaseInterFoam时,用snappyHexMesh设置了一块区域,然后加入了动网格,让这块区域直线运动,结果在0.65s出现了不收敛的情况,这是log文件,能不能看出不收敛的原因是什么,有大神们可以解答一下吗:135:

    Courant Number mean: 0.00263715 max: 0.592641
    Interface Courant Number mean: 0.000205746 max: 0.196717
    deltaT = 1.86717e-105
    Time = 0.671233
    
    PIMPLE: iteration 1
    GAMG:  Solving for cellDisplacementx, Initial residual = 0, Final residual = 0, No Iterations 0
    GAMG:  Solving for cellDisplacementy, Initial residual = 4.57288e-06, Final residual = 4.57288e-06, No Iterations 0
    Execution time for mesh.update() = 0.02 s
    GAMGPCG:  Solving for pcorr, Initial residual = 1, Final residual = 3.45004e-06, No Iterations 5
    time step continuity errors : sum local = 1.13181e-13, global = -2.30621e-14, cumulative = -0.0560662
    MULES: Solving for alpha.water
    water volume fraction, min, max = 0 0 0
    MULES: Solving for alpha.oil
    oil volume fraction, min, max = 0 0 0
    MULES: Solving for alpha.salt
    salt volume fraction, min, max = 0.696714 0 1
    MULES: Solving for alpha.air
    air volume fraction, min, max = 0.303286 3.42526e-64 1
    Phase-sum volume fraction, min, max = 1 1 1
    MULES: Solving for alpha.water
    water volume fraction, min, max = 0 0 0
    MULES: Solving for alpha.oil
    oil volume fraction, min, max = 0 0 0
    MULES: Solving for alpha.salt
    salt volume fraction, min, max = 0.696714 0 1
    MULES: Solving for alpha.air
    air volume fraction, min, max = 0.303286 3.4271e-64 1
    Phase-sum volume fraction, min, max = 1 1 1
    MULES: Solving for alpha.water
    water volume fraction, min, max = 0 0 0
    MULES: Solving for alpha.oil
    oil volume fraction, min, max = 0 0 0
    MULES: Solving for alpha.salt
    salt volume fraction, min, max = 0.696714 0 1
    MULES: Solving for alpha.air
    air volume fraction, min, max = 0.303286 3.42894e-64 1
    Phase-sum volume fraction, min, max = 1 1 1
    MULES: Solving for alpha.water
    water volume fraction, min, max = 0 0 0
    MULES: Solving for alpha.oil
    oil volume fraction, min, max = 0 0 0
    MULES: Solving for alpha.salt
    salt volume fraction, min, max = 0.696714 0 1
    MULES: Solving for alpha.air
    air volume fraction, min, max = 0.303286 3.43078e-64 1
    Phase-sum volume fraction, min, max = 1 1 1
    GAMG:  Solving for p_rgh, Initial residual = 0.0133035, Final residual = 0.000493626, No Iterations 2
    time step continuity errors : sum local = 4.2474e-05, global = 3.00597e-06, cumulative = -0.0560632
    GAMGPCG:  Solving for p_rgh, Initial residual = 0.00231444, Final residual = 3.46657e-08, No Iterations 6
    time step continuity errors : sum local = 1.5629e-09, global = 6.70208e-11, cumulative = -0.0560632
    ExecutionTime = 147.84 s  ClockTime = 148 s
    
    Courant Number mean: 0.0025889 max: 0.575287
    Interface Courant Number mean: 0.000207612 max: 0.194023
    deltaT = 1.62282e-105
    Time = 0.671233
    
    PIMPLE: iteration 1
    GAMG:  Solving for cellDisplacementx, Initial residual = 0, Final residual = 0, No Iterations 0
    GAMG:  Solving for cellDisplacementy, Initial residual = 4.57288e-06, Final residual = 4.57288e-06, No Iterations 0
    Execution time for mesh.update() = 0.02 s
    GAMGPCG:  Solving for pcorr, Initial residual = 1, Final residual = 6.87234e-06, No Iterations 7
    time step continuity errors : sum local = 4.07967e-13, global = -9.83711e-14, cumulative = -0.0560632
    MULES: Solving for alpha.water
    water volume fraction, min, max = 0 0 0
    MULES: Solving for alpha.oil
    oil volume fraction, min, max = 0 0 0
    MULES: Solving for alpha.salt
    salt volume fraction, min, max = 0.696714 0 1
    MULES: Solving for alpha.air
    air volume fraction, min, max = 0.303286 3.4315e-64 1
    Phase-sum volume fraction, min, max = 1 1 1
    MULES: Solving for alpha.water
    water volume fraction, min, max = 0 0 0
    MULES: Solving for alpha.oil
    oil volume fraction, min, max = 0 0 0
    MULES: Solving for alpha.salt
    salt volume fraction, min, max = 0.696714 0 1
    MULES: Solving for alpha.air
    air volume fraction, min, max = 0.303286 3.43222e-64 1
    Phase-sum volume fraction, min, max = 1 1 1
    MULES: Solving for alpha.water
    water volume fraction, min, max = 0 0 0
    MULES: Solving for alpha.oil
    oil volume fraction, min, max = 0 0 0
    MULES: Solving for alpha.salt
    salt volume fraction, min, max = 0.696714 0 1
    MULES: Solving for alpha.air
    air volume fraction, min, max = 0.303286 3.43294e-64 1
    Phase-sum volume fraction, min, max = 1 1 1
    MULES: Solving for alpha.water
    water volume fraction, min, max = 0 0 0
    MULES: Solving for alpha.oil
    oil volume fraction, min, max = 0 0 0
    MULES: Solving for alpha.salt
    salt volume fraction, min, max = 0.696714 0 1
    MULES: Solving for alpha.air
    air volume fraction, min, max = 0.303286 3.43366e-64 1
    Phase-sum volume fraction, min, max = 1 1 1
    #0  Foam::error::printStack(Foam::Ostream&) at ??:?
    #1  Foam::sigFpe::sigHandler(int) at ??:?
    #2  ? in /lib/x86_64-linux-gnu/libc.so.6
    #3  Foam::GAMGSolver::scale(Foam::Field<double>&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, Foam::Field<double> const&, unsigned char) const at ??:?
    #4  Foam::GAMGSolver::Vcycle(Foam::PtrList<Foam::lduMatrix::smoother> const&, Foam::Field<double>&, Foam::Field<double> const&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::PtrList<Foam::Field<double> >&, Foam::PtrList<Foam::Field<double> >&, unsigned char) const at ??:?
    #5  Foam::GAMGSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:?
    #6  Foam::fvMatrix<double>::solveSegregated(Foam::dictionary const&) at ??:?
    #7  Foam::fvMatrix<double>::solveSegregatedOrCoupled(Foam::dictionary const&) at ??:?
    #8  Foam::fvMesh::solve(Foam::fvMatrix<double>&, Foam::dictionary const&) const at ??:?
    #9  ? in ~/OpenFOAM2006/OpenFOAM-v2006/platforms/linux64GccDPInt32Opt/bin/multiphaseInterFoam
    #10  ? in /lib/x86_64-linux-gnu/libc.so.6
    #11  __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6
    #12  ? in ~/OpenFOAM2006/OpenFOAM-v2006/platforms/linux64GccDPInt32Opt/bin/multiphaseInterFoam
    Floating point exception (core dumped)

  • 计算过程中的得到x=1位置处的水位
    L lalalala

    有没有大佬知道,如果我想在计算过程中就得到某个位置处的水位,怎么能实现的,因为想把实时水位加入计算过程


  • 在运行olaFlow的waveMakerFlume时,出现浮点数例外(核心已转储)的错误,但是并未对算例进行修改
    L lalalala

    @李东岳 好的,谢谢老师!!


  • 在运行olaFlow的waveMakerFlume时,出现浮点数例外(核心已转储)的错误,但是并未对算例进行修改
    L lalalala

    谢谢老师,那有可能是我的安装版本/编译的问题吗


  • 在运行olaFlow的waveMakerFlume时,出现浮点数例外(核心已转储)的错误,但是并未对算例进行修改
    L lalalala

    我在运行olaFlow的waveMakerFlume时,出现浮点数例外(核心已转储)的错误,但是并未对算例进行修改,运行其他动网格的算例时也会出现这种情况,各位老师们知道是怎么回事吗/(ㄒoㄒ)/~~
    这是出现的错误:

    blockMesh meshing...
    Preparing 0 folder...
    Setting the fields...
    Creating flap wavemaker movement...
    Running...
    #0  Foam::error::printStack(Foam::Ostream&) at ??:?
    #1  Foam::sigFpe::sigHandler(int) at ??:?
    #2  ? in /lib/x86_64-linux-gnu/libc.so.6
    #3  Foam::scalarProduct<double, double>::type Foam::sumProd<double>(Foam::UList<double> const&, Foam::UList<double> const&) at ??:?
    #4  Foam::PCG::scalarSolve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:?
    #5  Foam::PCG::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:?
    #6  Foam::fvMatrix<double>::solveSegregated(Foam::dictionary const&) at ??:?
    #7  Foam::fvMatrix<double>::solveSegregatedOrCoupled(Foam::dictionary const&) at ??:?
    #8  Foam::fvMesh::solve(Foam::fvMatrix<double>&, Foam::dictionary const&) const at ??:?
    #9  ? in ~/OpenFOAM/user-v2006/platforms/linux64GccDPInt32Opt/bin/olaDyMFlow
    #10  ? in /lib/x86_64-linux-gnu/libc.so.6
    #11  __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6
    #12  ? in ~/OpenFOAM/user-v2006/platforms/linux64GccDPInt32Opt/bin/olaDyMFlow
    ./runCaseFlap: 第 21 行:  6957 浮点数例外         (核心已转储) olaDyMFlow > olaDyMFlow.log
    Simulation complete.
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