Two-Phase Fluid Properties (2P) for Helium

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Saara Väänänen
Saara Väänänen le 26 Mai 2021
Commenté : Juan Sagarduy le 17 Août 2021
Hi,
Is there a ready made library for Helium (He) two-phase fluid properties?
Could not find that from the twoPhaseFluidTables.
Br. Saara

Réponse acceptée

Juan Sagarduy
Juan Sagarduy le 26 Mai 2021
Hello Saara
Unfortunately not. The way to do it would be through the two phase fluid settings block (Simscape Foundation Library) and adding tabulated data.
There is a way to generate tables from REFPROP, NIST or CoolProp.
https://se.mathworks.com/help/physmod/simscape/ref/twophasefluidtables.html
Good luck Juan
  4 commentaires
Saara Väänänen
Saara Väänänen le 16 Août 2021
I have a follow-up question concerning the twophasefluid table.
I have installed CoolProp and it woks fine for the fluid r134a (https://se.mathworks.com/help/physmod/simscape/ref/twophasefluidtables.html). It also returns single values for Helium.
However, when using twoPhaseFluidTables for Helium an error occurs:
HeTables = twoPhaseFluidTables([-27.2,20000],...[0.01,2.27],25,25,50,'Helium','py.CoolProp.CoolProp.PropsSI')
Error using twoPhaseFluidTables>coolpropFluidProperties (line 899)
CoolProp failed to return fluid properties at P = 0.30942 MPa, U = 9.1303 kJ/kg.
Error in twoPhaseFluidTables>@(p,u)coolpropFluidProperties(p,u,substance,coolpropFun) (line 789)
fluidProperties = @(p, u) coolpropFluidProperties(p, u, substance, coolpropFun);
Error in twoPhaseFluidTables (line 215)
= fluidProperties(p(j), u_sat_liq(j));
Error in CoolProp (line 5)
HeTables = twoPhaseFluidTables([-27.2,20000],[0.01,2.27],25,25,50,...
Caused by:
Error using CoolProp/CoolProp.__Props_err2 (line 346)
Python Error: ValueError: PropsSI failed ungracefully :: inputs
were:"L","P",3.0941899477420672e+05,"U",9.1303102201927686e+03,"Helium"; please file a ticket at
Is there something wrong in the limits / how the twoPhaseFluidTables should be used correctly?
Thanks Juan!
Juan Sagarduy
Juan Sagarduy le 17 Août 2021
Hello Saara,
I believe we need to look into this more closely. I haven't used the two phase fluid table often. I propose that we have a Teams session to explore this and see what a solution could be.
is this adress correct to send an invitation: saara.vaananen@student.tut.fi
Regards/Juan

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