TAGGED: ansys-chemkin, fluent, thermodynamic-data
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October 9, 2024 at 6:18 pmsjohnSubscriber
What do "70590" and "62987" stand for? I got this screenshot from the Fluent User guide Figure 2.1. In Table 2.1, it says "date" but notused in the bracket.
When I created my owndatabase following this format, I get this message in chemout -
TOO MANY DATA ITEMS. Â NUMBER EXPECTED = Â 1
   Error...failure reading fit temperaturesÂ
       species: H2O
       thermo data line: H2O        091919H2 O1        L300.000  800.000 600.000     1
       columns 56-65: 800.000 60
   Error...fit temperatures are not in ascending order,
       species: H2O
       thermo data line: H2O        091919H2 O1        L300.000  800.000 600.000     1                                                                                          Â
   values found are:
  300.000000000000    0.000000000000000E+000  800.000000000000    -
November 8, 2024 at 3:03 pmjcooperAnsys Employee
Hi sjohn:
Â
The thermodynamic database has a strict format with regards to what items are in what columns. I don't think the numbers matter so long as the required information is in the right columns.
It looks like the last digit in the last temperature is too close to the 1 at the end of the first data row, so the temperatures are being truncated. Can you please attach a sample of your thermo file that contains the problem lines?
Please note that the thermo header also makes a difference - THERMO vs. THERMO ALL.
If temperature ranges are to be specified separately for each specie, the header usually has a temperature range that will apply if none is specified:
Â
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November 8, 2024 at 8:10 pmsjohnSubscriber
Thanks for reply. I had solved this issue last month by removing the common temperature range under THERMO.
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