CFD中文网

    CFD中文网

    • 登录
    • 搜索
    • 最新

    关于算例还在运行,但时间步不动了的问题

    OpenFOAM
    2
    3
    680
    正在加载更多帖子
    • 从旧到新
    • 从新到旧
    • 最多赞同
    回复
    • 在新帖中回复
    登录后回复
    此主题已被删除。只有拥有主题管理权限的用户可以查看。
    • 七
      七辆战车 最后由 编辑

      算的是一个流固耦合的算例,设置的时长为30s,时间步为0.0008s,但就像下面log文件所示,跑到21.6s就不动了,库朗数和时间步也都没有问题,可后台的算例仍在运行,不知道有人遇到过这种情况吗?

      
      Courant Number mean: 0.0217177 max: 0.747933
      Interface Courant Number mean: 0.00207593 max: 0.317466
      deltaT = 0.00246914
      Time = 21.64
      
      PIMPLE: iteration 1
      forces forces:
          Not including porosity effects
      
      Rigid-body motion of the floatingObject_1
          Centre of rotation: (17.9676 1.18487 2.30971)
          Orientation: (0.789224 -0.604364 -0.108945 0.598425 0.796707 -0.0845331 0.137886 0.00152029 0.990447)
          Linear velocity: (1.08494 -0.00258798 -0.0580525)
          Angular velocity: (0.00635102 0.475399 -0.0333477)
      inverseDistance : detected 2 mesh regions
          zone:0 nCells:3543750  voxels:(46 46 46) bb:(27.16 1.15079 0.679996) (30 2.5 3)
          zone:1 nCells:128764  voxels:(46 46 46) bb:(-60 -5.00003 -6.00003) (-30 -2.49997 -2.99997)
      Overset analysis : nCells : 3672514
          calculated   : 3666116
          interpolated : 4240 (interpolated from local:0  mixed local/remote:0  remote:4240)
          hole         : 2158
      
      Velocity BC on patch inlet
      3D_2D Absorption BC on patch outlet
      "Correction Levels" 1( 0.00294933 )
      
      Execution time for mesh.update() = 17.54 s
      alpha.water BC on patch inlet
      smoothSolver:  Solving for alpha.water, Initial residual = 0.000313216, Final residual = 2.15956e-09, No Iterations 2
      Phase-1 volume fraction = 0.674956  Min(alpha.water) = 0  Max(alpha.water) = 1.00807
      MULES: Correcting alpha.water
      alpha.water BC on patch inlet
      MULES: Correcting alpha.water
      alpha.water BC on patch inlet
      Phase-1 volume fraction = 0.674956  Min(alpha.water) = 0  Max(alpha.water) = 1.00807
      Velocity BC on patch inlet
      3D_2D Absorption BC on patch outlet
      "Correction Levels" 1( 0.00294969 )
      
      DILUPBiCGStab:  Solving for p_rgh, Initial residual = 0.000588579, Final residual = 4.92802e-06, No Iterations 13
      time step continuity errors : sum local = 2.70306e-07, global = -1.19385e-07, cumulative = 0.000294726
      DILUPBiCGStab:  Solving for p_rgh, Initial residual = 1.7783e-05, Final residual = 1.71179e-07, No Iterations 33
      Velocity BC on patch inlet
      3D_2D Absorption BC on patch outlet
      "Correction Levels" 1( 0.00294969 )
      
      time step continuity errors : sum local = 8.87724e-09, global = -3.68185e-09, cumulative = 0.000294722
      DILUPBiCGStab:  Solving for p_rgh, Initial residual = 2.68839e-06, Final residual = 9.42479e-10, No Iterations 93
      Velocity BC on patch inlet
      3D_2D Absorption BC on patch outlet
      "Correction Levels" 1( 0.00294969 )
      
      time step continuity errors : sum local = 5.0388e-11, global = -2.36117e-12, cumulative = 0.000294722
      smoothSolver:  Solving for omega, Initial residual = 0.000973407, Final residual = 5.00791e-09, No Iterations 3
      smoothSolver:  Solving for k, Initial residual = 0.000871409, Final residual = 5.24147e-09, No Iterations 3
      ExecutionTime = 142025 s  ClockTime = 141934 s
      
      1 条回复 最后回复 回复 引用
      • bestucan
        bestucan 版主 副教授 最后由 编辑

        https://cfd-china.com/topic/3453/运行pisofoam的时候-卡住不动了

        里面有个可以尝试的方法。

        滚来滚去……~(~o ̄▽ ̄)~o 滚来滚去都不能让大家看出来我不是老师么 O_o

        异步沟通方式(《posting style》from wiki)(下载后打开):
        https://www.jianguoyun.com/p/Dc52X2sQsLv2BRiqnKYD
        提问的智慧(github在gitee的镜像):
        https://gitee.com/bestucan/How-To-Ask-Questions-The-Smart-Way/blob/master/README-zh_CN.md

        七 1 条回复 最后回复 回复 引用
        • 七
          七辆战车 @bestucan 最后由 编辑

          @bestucan 感谢回复!

          1 条回复 最后回复 回复 引用
          • First post
            Last post