.Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic

Functions for calculating the isentropic enthalpy from pressure p and specific entropy s

Information

Function hofpT1 computes h(p,T) in region 1.
Function handsofpT1 computes (s,h)=f(p,T) in region 1, needed for two-phase properties.
Function hofps1 computes h(p,s) in region 1.
Function hofpT2 computes h(p,T) in region 2.
Function handsofpT2 computes (s,h)=f(p,T) in region 2, needed for two-phase properties.
Function hofps2 computes h(p,s) in region 2.
Function hofdT3 computes h(d,T) in region 3.
Function hofpsdt3 computes h(p,s,dguess,Tguess) in region 3, where dguess and Tguess are initial guess values for the density and temperature consistent with p and s.
Function hofps4 computes h(p,s) in region 4.
Function hofpT5 computes h(p,T) in region 5.
Function water_hisentropic computes h(p,s,phase) in all regions. The phase input is needed due to discontinuous derivatives at the phase boundary.
Function water_hisentropic_dyn computes h(p,s,dguess,Tguess,phase) in all regions. The phase input is needed due to discontinuous derivatives at the phase boundary. Tguess and dguess are initial guess values for the density and temperature consistent with p and s. This function should be preferred in dynamic simulations where good guesses are often available.

Author: Hubertus Tummescheit, previously at
Modelon AB
Ideon Science Park
SE-22370 Lund, Sweden

Name	Description
hofpT1	Intermediate function for isentropic specific enthalpy in region 1
handsofpT1	Special function for specific enthalpy and specific entropy in region 1
hofps1	Function for isentropic specific enthalpy in region 1
hofpT2	Intermediate function for isentropic specific enthalpy in region 2
handsofpT2	Function for isentropic specific enthalpy and specific entropy in region 2
hofps2	Function for isentropic specific enthalpy in region 2
hofdT3	Function for isentropic specific enthalpy in region 3
hofps3	Isentropic specific enthalpy in region 3 h(p,s)
hofpsdt3	Isentropic specific enthalpy in region 3 h(p,s) with given good guess in d and T
hofps4	Isentropic specific enthalpy in region 4 h(p,s)
hofpT5	Specific enthalpy in region 5 h(p,T)
water_hisentropic	Isentropic specific enthalpy from p,s (preferably use water_hisentropic_dyn in dynamic simulation!)
water_hisentropic_dyn	Isentropic specific enthalpy from p,s and good guesses of d and T

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