twoPhaseEulerFoam 热传递



  • @cfd-china 是4.0版本的,就是每个时间步长迭代的最后会显示PIMPLE:not converged in 20 iterations



  • @MX

    如果不能简单的处理好的话,直接去你的求解器里面,把能量方程评论掉吧如:

    \\fvScalarMatrix Eeqn
    \\{
    \\ 全部评论掉
    \\}
    


  • @cfd-china 就像这样的 0_1472452058580_图片20160829142715.png



  • @cfd-china 好,我试试



  • @cfd-china 在将能量方程全部评论完运行一段时间之后那个bounding k.water出现负值且时间=步长也越来越小,直至最后中断

    Courant Number mean: 5.84593e-12 max: 6.24635e-05
    Max Ur Courant Number = 0.501327
    deltaT = 7.5759e-19
    Time = 0.0558288
    
    PIMPLE: iteration 1
    MULES: Solving for alpha.air
    MULES: Solving for alpha.air
    alpha.air volume fraction = 0.000122275  Min(alpha.air) = 0  Max(alpha.air) = 1
    Constructing momentum equations
    GAMG:  Solving for p_rgh, Initial residual = 3.09857e-06, Final residual = 2.58535e-16, No Iterations 1
    GAMG:  Solving for p_rgh, Initial residual = 2.58534e-16, Final residual = 2.58534e-16, No Iterations 0
    PIMPLE: iteration 2
    MULES: Solving for alpha.air
    MULES: Solving for alpha.air
    alpha.air volume fraction = 0.000122275  Min(alpha.air) = 0  Max(alpha.air) = 1
    Constructing momentum equations
    GAMG:  Solving for p_rgh, Initial residual = 4.23432e-09, Final residual = 4.23432e-09, No Iterations 0
    GAMG:  Solving for p_rgh, Initial residual = 4.23432e-09, Final residual = 4.23432e-09, No Iterations 0
    smoothSolver:  Solving for k.air, Initial residual = 0.00272658, Final residual = 1.78882e-11, No Iterations 1
    smoothSolver:  Solving for k.water, Initial residual = 4.7282e-07, Final residual = 2.02625e-12, No Iterations 1
    bounding k.water, min: -7.97352e+24 max: 3.96132e+22 average: -7.42132e+19
    PIMPLE: not converged within 2 iterations
    ExecutionTime = 154112 s
    


  • @MX
    发散了。网格是六面体还是四面体?



  • @cfd-china 六面体结构网格



  • @cfd-china 是不是跟边界条件设置有关?



  • @mx 你好 我想问一下你 您的问题解决了吗 我也遇到了 能不能告诉我您是怎样解决的 非常感谢 或者私下交流一下 qq 978741196



  • @mx 您好 您在吗 是在是打扰到您了 您要是看到了能回复一下吗 非常感谢 谢谢



  • 我的OF2.4.0也遇到了这个问题导致计算发散,而且在计算中我不需要考虑相间传热,只考虑液体的壁面散热,我该如何解决这个问题呢?@东岳 @CFD中文网



  • @王孟飞 这个问题我也遇到了,不知道怎么解决


 

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