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Old   March 27, 2014, 01:48
Default Regarding error in Transient simulation
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Prateek Anand
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Hello all,
I am performing transient simulation of a rectangular Natural Circulation loop operating between two temperatures of 299K-339K. I have given the operating temperature as average of the above mentioned temperature and o/p press is 90 bar. Fluid is CO2.
After the simulation is run for a few iterations, it shows an error(see the attachment)-->
"Primitive Error at Node 0: REFPROP_error (203) from function: tprho (density)

Primitive Error at Node 1: REFPROP_error (203) from function: tprho (density)

[TPRHO error 203] vapor iteration has not converged for T = 299.42 K, P = 7.1370 MPa, rho (last guess) = 6.6129 mol/L, x (mol frac) = 1.00000

[TPRHO error 203] vapor iteration has not converged for T = 299.29 K, P = 7.1370 MPa, rho (last guess) = 6.5994 mol/L, x (mol frac) = 1.00000

WHAT might be causing this?
Any help is appreciated. Thanks
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Old   December 19, 2015, 03:46
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Hossein
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Anybody here
Hello
Does anybody know the solution?
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