Axisymmetric flow (compressible + viscous)

LukeFullard · September 2, 2020, 02:12

Hello,

I am a new user to SU2 and I would like to use SU2 to examine flow of air through a venturi. Therefore I am needing to use the RANS solver + compressible + viscous capabilities of SU2.

I would like to run an axisymmetric calculation to save computational time.

From what I can see I must add the lines to the cfg file:

AXISYMMETRIC= YES
SOUR_NUM_METHOD_FLOW= PIECEWISE_CONSTANT

Is there anything else I should be aware of?
Are there any good example cfg cases of axisymmetric viscous flow using SU2?

Thank you for your time

wallym · October 6, 2020, 00:32

Hi Luke,

Sorry for the delay in the response. To use the axisymmetric source terms, you only need to specify AXISYMMETRIC = YES. However, the axisymmetric source terms are not formulated for RANS/viscous applications (it may converge, but will be incorrect). I am currently working to implement this.

Best,
Wally

September 2, 2020, 02:12	Axisymmetric flow (compressible + viscous)	#1
LukeFullard New Member Luke Join Date: Jun 2012 Posts: 14 Rep Power: 13	Hello, I am a new user to SU2 and I would like to use SU2 to examine flow of air through a venturi. Therefore I am needing to use the RANS solver + compressible + viscous capabilities of SU2. I would like to run an axisymmetric calculation to save computational time. From what I can see I must add the lines to the cfg file: AXISYMMETRIC= YES SOUR_NUM_METHOD_FLOW= PIECEWISE_CONSTANT Is there anything else I should be aware of? Are there any good example cfg cases of axisymmetric viscous flow using SU2? Thank you for your time

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October 6, 2020, 00:32		#2
wallym Senior Member Wally Maier Join Date: Apr 2019 Posts: 123 Rep Power: 7	Hi Luke, Sorry for the delay in the response. To use the axisymmetric source terms, you only need to specify AXISYMMETRIC = YES. However, the axisymmetric source terms are not formulated for RANS/viscous applications (it may converge, but will be incorrect). I am currently working to implement this. Best, Wally