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[Robert Caulk <question698776@xxxxxxxxxxxxxxxxxxxxx>]

Question #698776 on Yade changed:
https://answers.launchpad.net/yade/+question/698776

    Status: Open => Answered

Robert Caulk proposed the following answer:
Hello Ziyu,

Thanks for clearly describing your question.

1.) yes this is something to do with which directory you are in when you
execute the code. IT is designed for you to execute the code from inside
the examples folder. In other words, you need to use the command "cd" in
the terminal to get to the thermal engine examples folder.

2.) Yes, this is expected, commented and documented at the top of the file you reference, and not an issue. 
"# note: warnings for inifiniteK and Reynolds numbers = nan for boundary
# cells in regular packings are expected. It does not interfere with the 
# physics, these are warnings NOT errors. 
"

3.) This just means the spheres cannot move. This particular script is a
validation of conductive heat physics only as is documented in the paper
you reference.

Cheers,

Robert

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