fluent窗口显示如下说明了什么问题？？

zhangshumi2006

Fluent模拟过程开始模拟fluent窗口这样显示：
Updating solution at time level N... done.
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reversed flow in 1200 faces on outflow 3.

reversed flow in 1200 faces on outflow 3.

reversed flow in 827 faces on outflow 3.

reversed flow in 709 faces on outflow 3.

reversed flow in 827 faces on outflow 3.

reversed flow in 604 faces on outflow 3.

reversed flow in 886 faces on outflow 3.

reversed flow in 730 faces on outflow 3.

reversed flow in 787 faces on outflow 3.

reversed flow in 742 faces on outflow 3.

reversed flow in 838 faces on outflow 3.

reversed flow in 664 faces on outflow 3.

reversed flow in 823 faces on outflow 3.

reversed flow in 716 faces on outflow 3.

reversed flow in 811 faces on outflow 3.

reversed flow in 682 faces on outflow 3.

reversed flow in 851 faces on outflow 3.

reversed flow in 683 faces on outflow 3.

reversed flow in 823 faces on outflow 3.

reversed flow in 714 faces on outflow 3.
Flow time = 3600, time step = 1
3599 more time steps

Updating solution at time level N... done.
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reversed flow in 813 faces on outflow 3.

reversed flow in 632 faces on outflow 3.

reversed flow in 852 faces on outflow 3.

reversed flow in 699 faces on outflow 3.

reversed flow in 849 faces on outflow 3.

reversed flow in 686 faces on outflow 3.

reversed flow in 840 faces on outflow 3.

reversed flow in 691 faces on outflow 3.

reversed flow in 838 faces on outflow 3.

reversed flow in 721 faces on outflow 3.

reversed flow in 842 faces on outflow 3.

reversed flow in 678 faces on outflow 3.

reversed flow in 851 faces on outflow 3.

reversed flow in 689 faces on outflow 3.

reversed flow in 835 faces on outflow 3.

reversed flow in 693 faces on outflow 3.

reversed flow in 850 faces on outflow 3.

reversed flow in 684 faces on outflow 3.

reversed flow in 843 faces on outflow 3.

reversed flow in 677 faces on outflow 3.
Flow time = 7200, time step = 2
3598 more time steps

Updating solution at time level N... done.
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Updating solution at time level N... done.
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reversed flow in 864 faces on outflow 3.

reversed flow in 658 faces on outflow 3.

reversed flow in 838 faces on outflow 3.

reversed flow in 659 faces on outflow 3.

reversed flow in 856 faces on outflow 3.

reversed flow in 681 faces on outflow 3.

reversed flow in 818 faces on outflow 3.

reversed flow in 665 faces on outflow 3.

reversed flow in 837 faces on outflow 3.

reversed flow in 679 faces on outflow 3.

reversed flow in 826 faces on outflow 3.

reversed flow in 677 faces on outflow 3.

reversed flow in 837 faces on outflow 3.

reversed flow in 676 faces on outflow 3.

reversed flow in 826 faces on outflow 3.

reversed flow in 680 faces on outflow 3.

reversed flow in 844 faces on outflow 3.

reversed flow in 688 faces on outflow 3.

reversed flow in 814 faces on outflow 3.

reversed flow in 676 faces on outflow 3.
Flow time = 14400, time step = 4
3596 more time steps

Updating solution at time level N... done.
  iter     time/iter

reversed flow in 844 faces on outflow 3.

reversed flow in 670 faces on outflow 3.

reversed flow in 824 faces on outflow 3.

reversed flow in 670 faces on outflow 3.

reversed flow in 858 faces on outflow 3.

reversed flow in 686 faces on outflow 3.

reversed flow in 819 faces on outflow 3.

reversed flow in 685 faces on outflow 3.

reversed flow in 852 faces on outflow 3.

reversed flow in 686 faces on outflow 3.

reversed flow in 830 faces on outflow 3.

reversed flow in 681 faces on outflow 3.

reversed flow in 849 faces on outflow 3.
!   93 solution is converged
Flow time = 18000, time step = 5
3595 more time steps
而迭代几步后，就出现这样的显示：

Updating solution at time level N... done.
  iter     time/iter
!   93 solution is converged

reversed flow in 689 faces on outflow 3.

reversed flow in 833 faces on outflow 3.

reversed flow in 712 faces on outflow 3.

reversed flow in 782 faces on outflow 3.

reversed flow in 738 faces on outflow 3.

reversed flow in 810 faces on outflow 3.

reversed flow in 704 faces on outflow 3.

reversed flow in 782 faces on outflow 3.
!  101 solution is converged
Flow time = 21600, time step = 6
3594 more time steps

Updating solution at time level N... done.
  iter     time/iter
!  101 solution is converged

reversed flow in 740 faces on outflow 3.

reversed flow in 733 faces on outflow 3.

reversed flow in 736 faces on outflow 3.

reversed flow in 730 faces on outflow 3.

reversed flow in 736 faces on outflow 3.
!  106 solution is converged
Flow time = 25200, time step = 7
3593 more time steps

Updating solution at time level N... done.
  iter     time/iter
!  106 solution is converged

reversed flow in 734 faces on outflow 3.

reversed flow in 724 faces on outflow 3.
!  108 solution is converged
Flow time = 28800, time step = 8
3592 more time steps

Updating solution at time level N... done.
  iter     time/iter
!  108 solution is converged

reversed flow in 838 faces on outflow 3.

reversed flow in 671 faces on outflow 3.
MAX ITERATIONS PER TIME STEP 我设的是20.为什么后来不显示20步呢？？这样会出现模拟的错误吗？？