Question about OPT_OBJECTIVE

lbfhappy · March 18, 2018, 03:23

Hey all,

When I'm using the optimization function of SU2 to optimize a mesh model made by myself, I want to get the minimum value of LIFT.

I found SU2 seek the maximum value of LIFT by default?

Therefore, I wrote OPT_OBJECTIVE=LIFT*(-0.1), but it reported error.
Then I wrote OPT_OBJECTIVE=LIFT*-0.1, it seems work.

Is my operation correct? Is there document about discipline in detail of SU2 configuration file?

Bingfei

fpalacios · March 18, 2018, 21:34

Yep OPT_OBJECTIVE=LIFT*-0.1 is correct. Anyway my recommendation is to take a look at the new SU2 v6 tutorial.

OPT_GRADIENT_FACTOR and OPT_RELAX_FACTOR are new important variables

Best,
Francisco

March 18, 2018, 03:23	Question about OPT_OBJECTIVE	#1
lbfhappy New Member Bingfei Join Date: Nov 2015 Posts: 25 Rep Power: 10	Hey all, When I'm using the optimization function of SU2 to optimize a mesh model made by myself, I want to get the minimum value of LIFT. I found SU2 seek the maximum value of LIFT by default? Therefore, I wrote OPT_OBJECTIVE=LIFT(-0.1), but it reported error. Then I wrote OPT_OBJECTIVE=LIFT-0.1, it seems work. Is my operation correct? Is there document about discipline in detail of SU2 configuration file? Bingfei

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March 18, 2018, 21:34		#2
fpalacios Super Moderator Francisco Palacios Join Date: Jan 2013 Location: Long Beach, CA Posts: 404 Rep Power: 15	Yep OPT_OBJECTIVE=LIFT*-0.1 is correct. Anyway my recommendation is to take a look at the new SU2 v6 tutorial. OPT_GRADIENT_FACTOR and OPT_RELAX_FACTOR are new important variables Best, Francisco