12.23 08.prz

小弟刚学习PROII，模拟精馏塔的时候出现下面的现象了，求高手帮忙解决！

*** ERROR ***  COLUMN calculations TERMINATED. Alpha ( the damping factor )
               was BELOW .01 for 4 consecutive iterations after 2 new matrix
               calculations.
*** A FATAL ERROR OCCURRED ON ITERATION    2
*** ERROR HISTORY IS NOT AVAILABLE FOR THIS ITERATION
    *** PROBLEM SOLUTION NOT REACHED
*** Run completed - Case not solved

*** THIS RUN USED 2.00 PRO/II SIMULATION UNITS