Learning Forum

[sjohn]

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.  NUMBER EXPECTED =  1
      Error...failure reading fit temperatures 
              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                                                                                                                                                                                   
      values found are:
   300.000000000000       0.000000000000000E+000   800.000000000000     

[jcooper]

Hi sjohn:

 

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:

 

[sjohn]

Thanks for reply. I had solved this issue last month by removing the common temperature range under THERMO.