Quasi-1D nozzle flow and sensitivities

kmandar · July 22, 2015, 21:39

Hi,

Is there any option to specify that the flow is quasi-1D? This might seem like I am going one level of fidelity backwards, but I want to solve the flow and sensitivity for quasi-1D nozzle. This problem is good because we have the analytical solution, and the errors in flow and sensitivity can be accurately quantified.

Thanks for the wonderful commenting in the code. It helps a ton!

Respectfully,
Mandar

hlk · July 23, 2015, 12:02

A while ago I implemented area-averaged and flux-averaged outputs, intended to be used to one-dimensionalize the flow at an outlet.
The code for this is in SU2_CFD/output_structure.cpp; COutput::OneDimensionalOutput

It is controlled by the config settings:
ONE_D_OUTPUT=TRUE
MARKER_OUT_1D = (outlet marker)

It will add the values calculated there to the history file. It's not exactly what you're asking for, but you might be able to either use those values to get what you want or modify that function to get the one-dimensionalization you want.

kmandar · August 25, 2015, 09:15

Thanks for your reply.

Ok, I think I understand most parts of that piece of code.

July 22, 2015, 21:39	Quasi-1D nozzle flow and sensitivities	#1
kmandar Member Mandar Kulkarni Join Date: Nov 2013 Location: Virginia Tech, Blacksburg, VA Posts: 52 Rep Power: 13	Hi, Is there any option to specify that the flow is quasi-1D? This might seem like I am going one level of fidelity backwards, but I want to solve the flow and sensitivity for quasi-1D nozzle. This problem is good because we have the analytical solution, and the errors in flow and sensitivity can be accurately quantified. Thanks for the wonderful commenting in the code. It helps a ton! Respectfully, Mandar

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July 23, 2015, 12:02		#2
hlk Senior Member Heather Kline Join Date: Jun 2013 Posts: 309 Rep Power: 14	A while ago I implemented area-averaged and flux-averaged outputs, intended to be used to one-dimensionalize the flow at an outlet. The code for this is in SU2_CFD/output_structure.cpp; COutput::OneDimensionalOutput It is controlled by the config settings: ONE_D_OUTPUT=TRUE MARKER_OUT_1D = (outlet marker) It will add the values calculated there to the history file. It's not exactly what you're asking for, but you might be able to either use those values to get what you want or modify that function to get the one-dimensionalization you want.

August 25, 2015, 09:15		#3
kmandar Member Mandar Kulkarni Join Date: Nov 2013 Location: Virginia Tech, Blacksburg, VA Posts: 52 Rep Power: 13	Thanks for your reply. Ok, I think I understand most parts of that piece of code.