[diwakaranant]

Hi

I am trying gradient free optimization using SU2 as functional evaluation
solver for Cl, Cd etc and optimization algorithms like PSO etc.

I need to calculate area/volume of airfoil/wing for imposing
volume constraint at each design iteration during optimization.

How can I get area/volume as output in SU2_CFD ?

Thanks
Anant

[fpalacios]

Originally Posted by diwakaranant

Hi

I am trying gradient free optimization using SU2 as functional evaluation
solver for Cl, Cd etc and optimization algorithms like PSO etc.

I need to calculate area/volume of airfoil/wing for imposing
volume constraint at each design iteration during optimization.

How can I get area/volume as output in SU2_CFD ?

Thanks
Anant

Hi,
To compute geometrical quantities you should use SU2_GDC. We are precisely updating this functionality so... first pull the latest version of SU2 in GitHub. To calculate airfoil thickness, area, angle of attack of an Onera M6 you should add the following to the config file

% ----------------------- GEOMETRY EVALUATION PARAMETERS ----------------------%
%
% Geometrical evaluation mode (FUNCTION, GRADIENT)
GEO_MODE= FUNCTION
%
% Marker(s) of the surface where geometrical based func. will be evaluated
GEO_MARKER= ( UPPER_SIDE, LOWER_SIDE, TIP )
%
% Number of airfoil sections
GEO_NUMBER_SECTIONS= 10
%
% Orientation of airfoil sections (X_AXIS, Y_AXIS, Z_AXIS)
GEO_ORIENTATION_SECTIONS= Y_AXIS
%
% Location (coordinate) of the airfoil sections (MinValue, MaxValue)
GEO_LOCATION_SECTIONS= (0.01, 20.0)

and run SU2_GDC. The results will be in of_func.dat and Airfoil_Sections.plt. If it is just an airfoil, the following would be enough.

% ----------------------- GEOMETRY EVALUATION PARAMETERS ----------------------%
%
% Geometrical evaluation mode (FUNCTION, GRADIENT)
GEO_MODE= FUNCTION
%
% Marker(s) of the surface where geometrical based func. will be evaluated
GEO_MARKER= ( airfoil )

Best,
Francisco

[diwakaranant]

Hi Francisco

Is it possible to calculate volume of Onera wing using SU2_GDC ?

When I ran, it gave areas of cross section airfoils at different locations.

Thanks
Anant

[fpalacios]

Originally Posted by diwakaranant

Hi Francisco

Is it possible to calculate volume of Onera wing using SU2_GDC ?

When I ran, it gave areas of cross section airfoils at different locations.

Thanks
Anant

No, at this moment it is not possible to compute the total 3D volume… but we are working in that capability.

Cheers,
Francisco

[diwakaranant]

Hi Francisco

Is there any update on the calculation of volume of 3D wings etc using
SU2 GDC ?
I wanted to impose volume constraint during 3D optimization, hence this
requirement.

Thanks
Anant