Spinodal line generation for a geniric substance

[Nicola Foletti]

Hi,

I am interested in retriving the point of the spinodal line for a generic single component fluid. I was wodering if someone has already written an optimize python code or matlab code to retrive that data. Since I have to find the value on the spinodal line for several isotherms.

Thank you very much for your time.

Nicola Foletti

[Matthis Thorade]

Hi,

not exactly what you need, but maybe you can start from this notebook:

https://github.com/CoolProp/CoolProp/blob/master/doc/notebooks/Maxwell_Loop.ipynb

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Matthis Thorade
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[Ian Bell]

I would,  starting at the saturation density, use newton's method to iterate to find the density that gives dpdrho|T=0.  This is a standard rootfinding exercise.  Would be nice if someone added it to coolprop core.

[Nicola Foletti]

Thank you very much Matthis and Ian. I will try.