OPT_OBJECTIVE vs OBJECTIVE_FUNCTION

mardar572 · October 8, 2022, 13:07

What is the difference between OBJECTIVE_FUNCTION and OPT_OBJECTIVE in .cfg file? I read the master .cfg file explanations but I am still not clear.

OBJECTIVE_FUNCTION= DRAG
OPT_OBJECTIVE= DRAG

wallym · October 24, 2022, 12:09

Hi Mardar572,

I agree the explanations could use some work.
OBJECTIVE_FUNCTION is used in the computations of gradients/sensitivities within the adjoint framework.
OPT_OBJECTIVE (I believe) is only used with shape_optimization.py script.

Best,
Wally

ashvin · October 9, 2024, 05:26

Thanks! I have the same issue. I sometimes get lost as to why there are two such definitions.

October 8, 2022, 13:07	OPT_OBJECTIVE vs OBJECTIVE_FUNCTION	#1
mardar572 New Member mardar Join Date: Dec 2019 Posts: 17 Rep Power: 6	What is the difference between OBJECTIVE_FUNCTION and OPT_OBJECTIVE in .cfg file? I read the master .cfg file explanations but I am still not clear. OBJECTIVE_FUNCTION= DRAG OPT_OBJECTIVE= DRAG ashvin likes this.

October 24, 2022, 12:09		#2
wallym Senior Member Wally Maier Join Date: Apr 2019 Posts: 123 Rep Power: 7	Hi Mardar572, I agree the explanations could use some work. OBJECTIVE_FUNCTION is used in the computations of gradients/sensitivities within the adjoint framework. OPT_OBJECTIVE (I believe) is only used with shape_optimization.py script. Best, Wally mardar572, ashvin and danielncku like this.

October 9, 2024, 05:26		#3
ashvin New Member Ashvin Join Date: Feb 2020 Posts: 9 Rep Power: 6	Thanks! I have the same issue. I sometimes get lost as to why there are two such definitions.