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water and steam properties and derivatives for MATLAB

Results 13 IAPWS_IF97 issues
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- use class - store constants at class level - create package using @folder

I made the following properties available as low-level calls: 'd2gammadtau2_pT','d2gammadpi2_pT','d2gammadtautau2_pT','d2gammadpipi2_pT','d2gammadpitau2_pT',... 'w1_pT','w2_pT','u1_pT','u2_pT','cv1_pT','cv2_pT',... 'gamma1_pT','gamma2_pT','s1_pT','s2_pT','phi3_rhoT' The updated region 2 dimensionless Gibbs derivatives (d2gammad...) return the ideal and residual derivatives separately - I'd like...

this is sorely lacking.

enhancement

[IAPWS](www.iapws.org) met in 2009 and 2011 and have since released some new guidelines, specifically for thermal conductivity of ordinary water this should be incorporated

enhancement

**Current** units are units used in IAPWS, SI for everything except specific heat, enthalpy and pressure **Proposed** let user set units **Comments** this would be easy in a class, but...

enhancement

**Current** Most properties and derivatives are geared toward p-h as inputs **Proposed** provide properties as functions of alternate inputs, _e.g. :_ p-T, p-s, h-s, etc.

enhancement

**Current** there is no way to calculate pressure of a given state, e.g. given v and T what is p? **Proposed** provide reverse calculations for pressure. **Comments** Not sure if...

enhancement

**Current** cp is available as cp_ph, but not cp_pT, and cv is not available at all. cp_pT is available but by region therefore the user is required to check the...

enhancement

**Current** User must derive entropy from other properties _e.g.:_ ds = dh/T - vdP/T (or ds = du/T + Pdv/T) **Proposed Provide functions for calculation of entropy and entropy derivatives...

enhancement