Reaction path analysis with Cantera and Graphviz

[Dan]

Dear All,

I am trying to do a reaction path analysis to determine and visualize graphically, the decomposition of a primary fuel specie. I would like to see the percentages of the fuel or specie that has been consumed or produced through the different reaction channels after after a specific temperature is reached or amount of the specie has been consumed during it's autoignition or combustion event in Cantera. 

I have installed graphviz  and also tried to run the elemental flux example (rxnpath.py) in Cantera documentation to begin. After running the rxnpath,py script which is attached, I am unable to use the rxnpath.dot input file to generate a graphical image with graphviz. It seems I am not using the right command in the windows command line. 

Please can anyone who knows  help me to understand how this really work.

Thanks in advance.

Dan

 

[Nick Curtis]

What error do you get Dan?
That attached script works for me

I think you most likely forgot to add graphviz to your PATH.  You can test this by attempting to run 'dot -V' from the command line

Nick

[Dan]

Dear Nick

The command I use in windows command line is > dot -Tpng rxnpath.dot -o rxnpath.png and the error it spits out is:

'dot' is not recognized as an internal or external command,

operable program or batch file.

When I run   'dot -V' from the command line, I get same error as above.

I tried adding graphviz to my path by going through the directory  'system >advanced settings> environment variables> system variables>path>

 C:\Program Files (x86)\Intel\iCLS Client\; ...........C:\Program Files (x86)\Graphviz but the error was still the same.

Any idea of what I am not doing right? 

Dan

[Bryan W. Weber]

Dear Dan,

Where is the dot.exe file located? I suspect its in something like C:\Program Files (x86)\Graphiz\bin or something similar. Add the directory that contains the dot.exe file to your path, then restart your command window.

Bryan

[Dan]

Dear Bryan

Thanks for noticing the omission in my directory. It worked !!!

Regards

Dan