不收敛怎么办
不收敛怎么办R
PRO/IIVersion 9.0 ELEC V7.0 - Calculation module
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*** READING PRO/II DATABASE
PROJECT USER
PROBLEM DATE
*** PROBLEM SOLUTION BEGINS
FEED FLASH BEGINS
FEED FLASH COMPLETE
UNIT 2 BEGINS - 'E1 '
UNIT 2 SOLVED
UNIT 1 BEGINS - 'T101 '
** WARNING **PRESSURE of feed STREAM 3, 'S27' = .12 is LESS THAN the feed
TRAY PRESSURE of .20778 on tray 10.
** WARNING **PRESSURE of feed STREAM 5, 'S6' = .12 is LESS THAN the feed
TRAY PRESSURE of .20778 on tray 10.
** MESSAGE **Column UNIT 1, 'T101' skipped because all feeds are identical,
tray locations of feeds, draws and heaters are unchanged and
all specifications are the same as the previous solution.
UNIT 1 SOLVED
UNIT 3 BEGINS - 'P1 '
UNIT 3 SOLVED
UNIT 4 BEGINS - 'E2 '
UNIT 4 SOLVED
UNIT 5 BEGINS - 'E3 '
UNIT 5 SOLVED
UNIT 10 BEGINS
INNER0 : E(ENTH+SPEC) = 5.646E-04
CALCULATING NEW MATRIX
INNER1 : E(ENTH+SPEC) = 5.573E-07ALPHA =1.0000
ITER1 E(K) = 8.772E-04 E(ENTH+SPEC) = 5.573E-07E(SUM) = 1.875E-02
DAMP = 9.500E-01
INNER0 : E(ENTH+SPEC) = 2.898E-04
INNER1 : E(ENTH+SPEC) = 1.047E-05ALPHA =1.0000
ITER2 E(K) = 7.457E-04 E(ENTH+SPEC) = 1.047E-05E(SUM) = 7.511E-03
DAMP = 9.500E-01
INNER0 : E(ENTH+SPEC) = 1.615E-04
INNER1 : E(ENTH+SPEC) = 1.255E-06ALPHA =1.0000
ITER3 E(K) = 1.122E-03 E(ENTH+SPEC) = 1.255E-06E(SUM) = 4.418E-03
DAMP = 9.500E-01
INNER0 : E(ENTH+SPEC) = 1.270E-04
INNER1 : E(ENTH+SPEC) = 5.597E-07ALPHA =1.0000
ITER4 E(K) = 1.155E-03 E(ENTH+SPEC) = 5.597E-07E(SUM) = 3.532E-03
DAMP = 9.500E-01
INNER0 : E(ENTH+SPEC) = 1.093E-04
INNER1 : E(ENTH+SPEC) = 1.174E-07ALPHA =1.0000
ITER5 E(K) = 1.089E-03 E(ENTH+SPEC) = 1.174E-07E(SUM) = 3.089E-03
DAMP = 9.500E-01
INNER0 : E(ENTH+SPEC) = 1.013E-04
INNER1 : E(ENTH+SPEC) = 2.877E-08ALPHA =1.0000
ITER6 E(K) = 1.043E-03 E(ENTH+SPEC) = 2.877E-08E(SUM) = 2.793E-03
DAMP = 9.500E-01
INNER0 : E(ENTH+SPEC) = 9.567E-05
INNER1 : E(ENTH+SPEC) = 1.101E-07ALPHA =1.0000
ITER7 E(K) = 9.915E-04 E(ENTH+SPEC) = 1.101E-07E(SUM) = 2.575E-03
UNIT 10 SOLVED
UNIT 11 BEGINS - 'E4 '
UNIT 11 SOLVED
UNIT 16 BEGINS
*** ERROR ***(MERGED COLUMN) UNIT 12, 'T1' - FLASH FAILURE occurred during
convergence calculations.
** WARNING **The ideal gas enthalpy of ETHANE was extrapolated.
** WARNING **The ideal gas enthalpy of PROPANE was extrapolated.
** WARNING **The ideal gas enthalpy of BUTANE was extrapolated.
INNER0 : E(ENTH+SPEC) = 4.549E+02
CALCULATING NEW MATRIX
ITER1 E(K) = 5.625E+00 E(ENTH+SPEC) = 4.549E+02E(SUM) = 5.683E+02
WATER SUPERSATURATION DETECTED ON16 TRAYS
DAMP = 6.000E-01
INNER0 : E(ENTH+SPEC) = 3.702E+01
** WARNING **UNIT 16 - COLUMN calculations are DIVERGING. Check input data
for consistency.
*** A FATAL ERROR OCCURRED ON ITERATION 2
*** ERROR HISTORY IS NOT AVAILABLE FOR THIS ITERATION
*** ERROR ***UNIT 16 - WATER SUPERSATURATION DETECTED on 12 trays. Column
solution is likely to be erroneous. Rerun using the SURE column
with the FREEWATER (DECANT) option enabled.
UNIT 16 NOT SOLVED
*** PROBLEM SOLUTION NOT REACHED
** WARNING **Unit '16' DID NOT SOLVE
*** Run completed - Case not solved
*** THIS RUN USED 510.41 PRO/II SIMULATION UNITS
*** RUN STATISTICS
STARTED 21:34:18 05/08/11 2 ERRORS
FINISHED 21:34:20 05/08/11 7 WARNINGS
RUN TIMES 1 MESSAGE
INTERACTIVE 0 MIN,0.00 SEC
CALCULATIONS 0 MIN,2.34 SEC
TOTAL 0 MIN,2.34 SEC
不收敛的话可能是无解，你在好好的检查一下你唆输入的参数 楼主这个图好复杂啊！这是炼油吗？ 回复 fuwen 的帖子
常减压是炼油 减压塔是不容易收敛。建议楼主多调试。主要还是调物料平衡和热平衡
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