Refprop Error 203 with Compressible Flow Boundary Conditions for an Ejector

NozzleNoobie · September 20, 2017, 02:58

I am having an Refprop error 203,tprho(density) when i try to use hybrid initialization.

My simulation is as follows for a Ejector 2D axi-symmetric model using k-omega SST.

Working Fluid: R134a superheated vapour using real gas properties in NIST

a) (Pressure-inlet) Inlet Motive Pressure = 28 Mpa and T = 357.4k
b) (Pressure-inlet) Inlet Entrained Pressure = 4Mpa and T = 283k
c) (Pressure-outlet) Outlet Pressure = 8.3Mpa and T = 303.5k

My guess is that there are problems with the Boundary Conditions.

However, i ensured that my B.C. are in the bounded range provided by NIST database.

NozzleNoobie · September 27, 2017, 12:15

any help guys, i am still stuck with this problem.

anjinoop · January 8, 2018, 05:39

I am also getting the same error for CO2 media.

Kindly help

LuckyTran · January 8, 2018, 19:56

Have you tried standard initialization?

anjinoop · January 9, 2018, 00:23

Yes, i have tried with standard intialization also.

NozzleNoobie · January 15, 2018, 05:49

Can i ask what is the fundamental difference between std and hybrid intialization?

September 20, 2017, 02:58	Refprop Error 203 with Compressible Flow Boundary Conditions for an Ejector	#1
NozzleNoobie New Member Jeff Yam Join Date: Sep 2017 Posts: 11 Rep Power: 8	I am having an Refprop error 203,tprho(density) when i try to use hybrid initialization. My simulation is as follows for a Ejector 2D axi-symmetric model using k-omega SST. Working Fluid: R134a superheated vapour using real gas properties in NIST a) (Pressure-inlet) Inlet Motive Pressure = 28 Mpa and T = 357.4k b) (Pressure-inlet) Inlet Entrained Pressure = 4Mpa and T = 283k c) (Pressure-outlet) Outlet Pressure = 8.3Mpa and T = 303.5k My guess is that there are problems with the Boundary Conditions. However, i ensured that my B.C. are in the bounded range provided by NIST database.

January 8, 2018, 05:39	Refrop error 203	#3
anjinoop New Member JINOOP Join Date: Jul 2017 Posts: 5 Rep Power: 8	I am also getting the same error for CO2 media. Kindly help

January 15, 2018, 05:49	Difference between std and hybrid intitialization?	#6
NozzleNoobie New Member Jeff Yam Join Date: Sep 2017 Posts: 11 Rep Power: 8	Can i ask what is the fundamental difference between std and hybrid intialization?

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September 27, 2017, 12:15		#2
NozzleNoobie New Member Jeff Yam Join Date: Sep 2017 Posts: 11 Rep Power: 8	any help guys, i am still stuck with this problem.

January 8, 2018, 19:56		#4
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,674 Rep Power: 66	Have you tried standard initialization?

January 9, 2018, 00:23		#5
anjinoop New Member JINOOP Join Date: Jul 2017 Posts: 5 Rep Power: 8	Yes, i have tried with standard intialization also.