Cantera example error batch_reactor_ignition_delay_NTC.ipynb

[tullio viola]

Hi all,

simple question: in batch_reactor_ignition_delay_NTC.ipynb on cantera's website, if you uncomment  # timeHistory.to_csv("time_history.csv")  you should have data saved into a .csv file, but it doesn't work.

https://cantera.org/examples/jupyter/reactors/batch_reactor_ignition_delay_NTC.ipynb.html

How to do that??

Thank you 

p.s It gives the error <cantera.composite.SolutionArray object at 0x7f4badca0fd0> when I try to save data with a personal implemented dataframe

Tullio

[Steven DeCaluwe]

Hi Tulio,

time_history  used to be a pandas data frame object (some of the comments still reflect this; the example could probably benefit from a little cleanup), which does have a ’to_csv’ method.

Now that it is a Cantera SolutionArray, such a method no longer exists.  The SolutionArray is an array of Cantera objects, which does not *automatically* translate to a data output.  There may be some output routines connected to this class, but if not you should be able to loop through the array objects, save the state and time associated with each in a numpy array, for example, and then write that numpy array to a csv file.

Best,

Steven 

——————————————————

Steven C. DeCaluwe, Ph.D | Associate Professor of Mechanical Engineering

COLORADOSCHOOLOFMINES

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Email: deca...@mines.edu

Phone: (303) 273-3666

Twitter: @CORESresearch

https://people.mines.edu/decaluwe/

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[tullio viola]

Dear Steven,

thank you as ever for your availability. I'll fix this procedure and then I'll post the complete script.

Best regards

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