Dear all,

I'm trying to run the test case: Inviscid transonic flow around NACA0012, 
from the previous 3rd High-Order Workshop (you can find a description 
below):

https://www.grc.nasa.gov/hiocfd/wp-content/uploads/sites/22/case_c1.2.pdf

I've run the case on a coarse mesh of 2240 cells, order p3, and the 
parameters for the artificial viscosity method specified in the "User 
Guide" section of your website: 

[solver-artificial-viscosity]
max-artvisc = 0.01
s0 = 0.01
kappa = 5.0


I obtain indistinguishable results from those without the artificial 
viscosity, so I guess I need to augment the max-artvisc value in order to 
get a higher smoothing of the shock.

Could you please let me know, first, if you have run this test case or 
another similar, and second, which values for the parameters above to use?

Also, for a more general test case, Which procedure do you use to estimate 
the correct value of the parameters above? I guess it's at the end a 
process of trial and error, but Would you know how to do a first quick 
estimation?

Thanks a lot for your help.

Best regards,
Antonio 

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