Plotting Q criterion on SU2

raviramesh10 · February 23, 2021, 07:54

Hello all,

I am trying to obtain the Q criterion plot as a part of post-processing my CFD results using SU2. I did check the configuration file template as well as .cpp configuration source code, but I could not find the keyword for obtaining the Q-criterion. Can someone please help me out with this?

bigfootedrockmidget · February 23, 2021, 18:09

I have never used it, but a search in the su2 code finds the keyword "Q_CRITERION", that can be written when the flow is INC_RANS or INC_NAVIER_STOKES. It is defined in CFlowIncOutput.cpp.
Let me know if it works for you, then the keyword should be added to config_template.cfg

pcg · February 24, 2021, 04:21

The group for that output is VORTEX_IDENTIFICATION, you need to add it to the VOLUME_OUTPUT list as it is not standard, e.g.
VOLUME_OUTPUT= PRIMITIVE, VORTEX_IDENTIFICATION

February 23, 2021, 07:54	Plotting Q criterion on SU2	#1
raviramesh10 Member Ravi Join Date: May 2017 Posts: 31 Rep Power: 8	Hello all, I am trying to obtain the Q criterion plot as a part of post-processing my CFD results using SU2. I did check the configuration file template as well as .cpp configuration source code, but I could not find the keyword for obtaining the Q-criterion. Can someone please help me out with this?

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February 23, 2021, 18:09		#2
bigfootedrockmidget Senior Member bigfoot Join Date: Dec 2011 Location: Netherlands Posts: 499 Rep Power: 17	I have never used it, but a search in the su2 code finds the keyword "Q_CRITERION", that can be written when the flow is INC_RANS or INC_NAVIER_STOKES. It is defined in CFlowIncOutput.cpp. Let me know if it works for you, then the keyword should be added to config_template.cfg

February 24, 2021, 04:21		#3
pcg Senior Member Pedro Gomes Join Date: Dec 2017 Posts: 465 Rep Power: 13	The group for that output is VORTEX_IDENTIFICATION, you need to add it to the VOLUME_OUTPUT list as it is not standard, e.g. VOLUME_OUTPUT= PRIMITIVE, VORTEX_IDENTIFICATION