Thickness constraint SU2 AIAA ADODG Benchmark Case 1

cfdjetman · March 28, 2019, 00:15

How do I specify the following thickness constraint in SU2

y>= 0.6(0.2969*sqrt(x)−0.1260*x−0.3516*x^2+ 0.2843*x^3−0.1036*x^4)
x is the cord position along the airfoil.

This is NACA 0012 airfoil.

atelcikti1 · October 9, 2019, 07:32

Any progress to this thread?

atelcikti1 · October 9, 2019, 08:14

Quote:

Originally Posted by atelcikti1

Any progress to this thread?

Or simply, where do I place my own code to define geometric constraints. Is there any template class for this purpose or I have to also change python scripts? Any advice will be appreciated.

cfdjetman · October 14, 2019, 14:46

Check this paper

https://www.researchgate.net/publica...lems_Using_SU2.

atelcikti1 · October 15, 2019, 07:00

Quote:

Originally Posted by cfdjetman

Check this paper

https://www.researchgate.net/publica...lems_Using_SU2.

Actually I have read the paper, but its not seem to relevant to my case. In paper, they use airfoil max. thickness as constraint. I have to define number of stations and I want to give min max values for each station on airfoil or simply any wall line.

cfdjetman · October 15, 2019, 13:40

I simulated only the upper half of the airfoil as the case is symmetric. I generated FFD control points on the upper half of the airfoil. I set the lower bounds for these control points to 0. That way, it is constrained to move only in the positive Y direction (upwards in this case). This way the baseline shape is not violated. My simulations have worked well.

Note: BFGS cannot handle bounds and constraints. SLSQP can.

March 28, 2019, 00:15	Thickness constraint SU2 AIAA ADODG Benchmark Case 1	#1
cfdjetman New Member cfdjetman Join Date: Mar 2019 Posts: 25 Rep Power: 7	How do I specify the following thickness constraint in SU2 y>= 0.6(0.2969sqrt(x)−0.1260x−0.3516x^2+ 0.2843x^3−0.1036*x^4) x is the cord position along the airfoil. This is NACA 0012 airfoil.

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October 9, 2019, 07:32		#2
atelcikti1 Member Join Date: Mar 2017 Posts: 61 Rep Power: 9	Any progress to this thread?

October 14, 2019, 14:46		#4
cfdjetman New Member cfdjetman Join Date: Mar 2019 Posts: 25 Rep Power: 7	Check this paper https://www.researchgate.net/publica...lems_Using_SU2.

October 15, 2019, 13:40		#6
cfdjetman New Member cfdjetman Join Date: Mar 2019 Posts: 25 Rep Power: 7	I simulated only the upper half of the airfoil as the case is symmetric. I generated FFD control points on the upper half of the airfoil. I set the lower bounds for these control points to 0. That way, it is constrained to move only in the positive Y direction (upwards in this case). This way the baseline shape is not violated. My simulations have worked well. Note: BFGS cannot handle bounds and constraints. SLSQP can.