Error with NASA Thermobuild Data File and 'ck2cti' Command in Matlab

[Matt G.]

Hi Everyone, 

Software information:

Windows 10

Matlab 2015b

Cantera 2.3 (64-bit)

Python 3.4 Cantera-2.3.0

Python 3.4.4 (64-bit)

I am new to Cantera and have had some issues creating a CTI file by using the ck2cti command in Matlab. I created a thermo data file using the NASA Thermobuild tool, and have been trying to convert it to a CTI file. I have been looking at the Cantera website under Elements and Species: The NASA 9-Coefficient Polynomial Parameterization to follow the example provided:

http://cantera.org/docs/sphinx/html/cti/species.html

At first, I tried to convert just the 'nasa9thermo.dat' file with no success, and then created a 'nasa9.inp' file to define the elements and species. While trying to convert the two files in Matlab I keep getting the following error:

>> f = ck2cti('nasa9.inp', 'nasa9thermo.dat')

Error using ctmethods

***********************************************************************

CanteraError thrown by ck2cti:

Error converting input file "nasa9.inp" to CTI.

Python command was: 'C:\Python34\python.exe'

The exit code was: 7

-------------- start of converter log --------------

Traceback (most recent call last):

  File "<stdin>", line 9, in <module>

  File "C:\Python34\lib\site-packages\cantera\ck2cti.py", line 2215, in convertMech

    surface_names = self.writeCTI(name=phaseName, outName=outName)

  File "C:\Python34\lib\site-packages\cantera\ck2cti.py", line 2023, in writeCTI

    speciesNames = self.getSpeciesString(self.speciesList, 21)

  File "C:\Python34\lib\site-packages\cantera\ck2cti.py", line 1963, in getSpeciesString

    raise InputParseError('No thermo data found for species: {0!r}'.format(s.label))

cantera.ck2cti.InputParseError: No thermo data found for species: 'AR'

--------------- end of converter log ---------------

***********************************************************************

Error in ck2cti (line 47)

iok = ctmethods(0, 1, infile, thermo, transport, idtag, 0, 0);

I attached the files that I am trying to convert to CTI. I would like to also mention that I was able to convert the UC San Diego Mechanism to CTI using the following command:

f = ck2cti('mech.txt', 'therm.txt, 'trans.txt)  

Thanks for any help or suggestions in advance. 

-Matt

 

[Ray Speth]

Matt,

The input files are case sensitive. In nasa9.inp, the species is named 'AR', but in nasa9thermo.dat, it is named 'Ar'.

Regards,

Ray

[Matt Gazella]

Ray, 

Thanks! Everything worked after I updated the files. 

-Matt

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