Two-Phase Fluid Properties (2P) for Helium

Hi,

Is there a ready made library for Helium (He) two-phase fluid properties?

Could not find that from the twoPhaseFluidTables.

Br. Saara

Answer 1

[Juan Sagarduy]

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

[Saara Väänänen]

Thanks for your answer!

Two phase fluid settings block will be the way then.

• Saara

[Juan Sagarduy]

Yes, I think so Saara. Get in touch if you need any help.

You can reach me at: [e-mail]

What is your affiliation at the moment?

BR / Juan

[Saara Väänänen]

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

https://github.com/CoolProp/CoolProp/issues

Is there something wrong in the limits / how the twoPhaseFluidTables should be used correctly?

Thanks Juan!

[Juan Sagarduy]

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: [e-mail]

Regards/Juan