Continuity equation monitoring

charan3007 · October 28, 2021, 08:30

Hi everyone,
i am very new to SU2. i have used fluent earlier, in which we have an option to monitor continuity & velocities across each iteration. In SU2 i came across history file which writes out RMS Rho. Is this the same as the continuity which we monitor in fluent? if not , is there any other way to monitor continuity?..

thank you for spending time in reading my question

with regards

charan

akoodlyr · October 29, 2021, 06:25

Hello,

Yes, the RMS Rho is the residual of the continuity equation for the compressible solver. In case you are using the incompressible solver, the RMS of pressure acts as a proxy for the continuity equation.

Cheers,
Akshay

charan3007 · November 2, 2021, 00:34

Quote:

Originally Posted by akoodlyr

Hello,

Yes, the RMS Rho is the residual of the continuity equation for the compressible solver. In case you are using the incompressible solver, the RMS of pressure acts as a proxy for the continuity equation.

Cheers,
Akshay

thank you for your reply. it would be very helpful if you can point me to any literature of the same thing which i can include in my work as a reference.

TKatt · November 2, 2021, 06:25

Please see this https://arc.aiaa.org/doi/abs/10.2514/1.J058222 for a little background. See whether this fits your needs.

The inc solver was implemented by Thomas Economon and he wrote this paper about it

Best, Tobi

charan3007 · November 10, 2021, 05:22

HI Tobi,
thank you so much, the pdf shared by you gave me an insight of incompressible solver.

Cheers,
Charan

October 28, 2021, 08:30	Continuity equation monitoring	#1
charan3007 New Member charan Join Date: Aug 2021 Posts: 11 Rep Power: 5	Hi everyone, i am very new to SU2. i have used fluent earlier, in which we have an option to monitor continuity & velocities across each iteration. In SU2 i came across history file which writes out RMS Rho. Is this the same as the continuity which we monitor in fluent? if not , is there any other way to monitor continuity?.. thank you for spending time in reading my question with regards charan

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October 29, 2021, 06:25		#2
akoodlyr Member Akshay Koodly Join Date: Aug 2017 Location: The Netherlands Posts: 43 Rep Power: 9	Hello, Yes, the RMS Rho is the residual of the continuity equation for the compressible solver. In case you are using the incompressible solver, the RMS of pressure acts as a proxy for the continuity equation. Cheers, Akshay

November 2, 2021, 06:25		#4
TKatt Member na Join Date: Jul 2018 Posts: 90 Rep Power: 8	Please see this https://arc.aiaa.org/doi/abs/10.2514/1.J058222 for a little background. See whether this fits your needs. The inc solver was implemented by Thomas Economon and he wrote this paper about it Best, Tobi

November 10, 2021, 05:22		#5
charan3007 New Member charan Join Date: Aug 2021 Posts: 11 Rep Power: 5	HI Tobi, thank you so much, the pdf shared by you gave me an insight of incompressible solver. Cheers, Charan