Hi Daniel,
I do have a gas stream with pure nitrogen in mixture definition. Volume flows and fractions are not calculated properly but mass fractions and flows seem to be ok.
Yes, that's an old bug that I have to fix but always end up forgetting to do it... :-)
Currently I calculate the volumetric fractions based on the partial molar volume values, which depend on the thermo model. If I'm not wrong I did it only rigorously for the PR and SRK models. Regarding the other models, the volumetric fractions are calculated based on an ideal mixture assumption.
Thanks for pointing that out.
Daniel
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Hi Daniel,
I do have a gas stream with pure nitrogen in mixture definition. Volume flows and fractions are not calculated properly but mass fractions and flows seem to be ok.
regards Gregor
Last edit: Gregor Reichert 2013-02-19
Hi Greg,
Yes, that's an old bug that I have to fix but always end up forgetting to do it... :-)
Currently I calculate the volumetric fractions based on the partial molar volume values, which depend on the thermo model. If I'm not wrong I did it only rigorously for the PR and SRK models. Regarding the other models, the volumetric fractions are calculated based on an ideal mixture assumption.
Thanks for pointing that out.
Daniel