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-   -   'scale' parameter in the DEFINITION_DV of FFD (http://www.cfd-online.com/Forums/su2/126741-scale-parameter-definition_dv-ffd.html)

diwakaranant November 25, 2013 10:02

'scale' parameter in the DEFINITION_DV of FFD
 
Hi

In the 3D shape optimization using FFD box deformation,
the parameter 'scale' in the DEFINITION_DV is defined as scale of the variable.

FFD_CONTROL_POINT ( 7, Scale | Mark. List | Chunk, i_Ind, j_Ind, k_Ind, x_Mov, y_Mov, z_Mov )

What does it signify?

Thanks
Anant

rktchip November 26, 2013 14:01

Hey Anant,

This is a scaling factor by witch SU2 will multiply the design variable before sending to the optimizer.

- Trent

diwakaranant November 28, 2013 01:35

Hi Trent

Thanks for the reply.

I wanted to know how should we choose this parameter for a given
problem ?

Does it depend on the mesh conversion factor or the scale factor with which
the objective function is multiplied ?

Thanks
Anant


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