DSTWU计算出的结果在Radfrac运行模拟出错

zhangwenying89 · 发表于 1970-1-1 08:00:00

水和二甲基亚砜的精馏分离模拟过程中，先用DSTWU进行简捷计算，结果带入到Radfrac严格衡算中，结果总是出错，实在找不出原因，求大侠指教！多谢多谢！

tdl522 · 发表于 1970-1-1 08:00:00

增加迭代次数，

->Processing input specifications ...

  Flowsheet Analysis :

COMPUTATION ORDER FOR THE FLOWSHEET:
D COL1 COL2

->Calculations begin ...

Block: D       Model: DUPL

Block: COL1    Model: DSTWU

Block: COL2    Model: RADFRAC

   Convergence iterations:
      OL ML IL    Err/Tol
      1 1 10    280.73
      2 1 7    319.36
      3 1 10    416.10
      4 1 10    2379.6
      5 1 10    2347.9
      6 1 10    504.31
      7 1 10    3743.3
      8 1 10    3640.3
      9 1 10    2073.6
      10 1 10    2018.2
      11 1 10    1833.6
      12 1 10    1509.3
      13 1 10    558.25
      14 1 10    3965.2
      15 1 10    3840.3
      16 1 10    1433.6
      17 1 10    1271.9
      18 1 10    523.20
      19 1 10    561.48
      20 1 10    2187.5
      21 1 10    2183.9
      22 1 10    769.01
      23 1 10    581.33
      24 1 9    332.20
      25 1 10    331.39
      26 1 10    402.51
      27 1 10    2302.6
      28 1 10    2344.1
      29 1 10    4694.0
      30 1 10    4430.8
      31 1 10    872.30
      32 1 10    4691.1
      33 1 10    1366.4
      34 1 8    242.20
      35 1 10    1633.0
      36 1 10    1819.4
      37 1 10    4830.9
      38 1 10    4521.0
      39 1 10    3541.2
      40 1 10    3459.4
      41 1 10    498.46
      42 1 10    2813.8
      43 1 10    2829.5
      44 1 10    4434.2
      45 1 10    4277.7
      46 1 10    514.45
      47 1 10    487.57
      48 1 10    680.02
      49 1 10    4096.2
      50 1 10    3913.9
      51 1 10    2829.1
      52 1 10    2793.9
      53 1 9    432.06
      54 1 10    2167.3
      55 1 10    2161.2
      56 1 8    264.63
      57 1 7    187.80
      58 1 6    124.70
      59 1 6    120.91
      60 1 5    68.069
      61 1 5    16.288
      62 1 4    3.5349
      63 1 4    0.74090

->Simulation calculations completed ...

  ***  No Warnings were issued during Input Translation ***

  ***  No Errors or Warnings were issued during Simulation ***

1592203609 · 发表于 1970-1-1 08:00:00

楼上正解，默认迭代次数为30，有时不会收敛

tdl522 · 发表于 1970-1-1 08:00:00

或者修改收敛方法：

->Calculations begin ...

Block: D       Model: DUPL

Block: COL1    Model: DSTWU

Block: COL2    Model: RADFRAC

   Convergence iterations:
      OL ML IL    Err/Tol
      1 1 2    3319.2
      2 1 2    42.023
      3 1 2    23.110
      4 1 2    2.7216
      5 1 2    0.91750E-01

->Simulation calculations completed ...

  ***  No Warnings were issued during Input Translation ***

  ***  No Errors or Warnings were issued during Simulation ***

zhangwenying89 · 发表于 1970-1-1 08:00:00

tdl522 发表于 2013-6-28 23:06
或者修改收敛方法：

->Calculations begin ...

真厉害！多谢多谢！！！{:1106_362:}

DSTWU计算出的结果在Radfrac运行模拟出错

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