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I'm Looking for an implementation of the IAPWS-IF97 water properties on C/C++. I'm aware of the library freesteam. However freesteam does not include all the properties I'm looking for. Particularly I need differential properties like dh/dp, dv/dp and in certain regions. I use a similar implementation for Octave/Matlab and I would also like to have it in C/C++.

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  • $\begingroup$ Since someone already did almost all of the work for you, why not compute these derivatives by finite differences? Or implement these derivatives in freesteam yourself? $\endgroup$ – Wolfgang Bangerth Jun 26 '15 at 23:25
  • $\begingroup$ (...and then of course contribute the upstream for inclusion in that project.) $\endgroup$ – Wolfgang Bangerth Jun 26 '15 at 23:25
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If you could only use Java, our open source IF97 library provides partial derivatives, see: www.hummeling.com/IF97

And it can be used for proprietary software as well.

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