|August 23, 2013, 05:55||
Evaluation of sensitivities
MENDES BORTOLAZZI Andre
Join Date: Jun 2013
Posts: 7Rep Power: 5
I was trying to understand how the objective function sensitivities w.r.t. the design variables are computed, but I could not understand the meaning of the variable called Sensitivity.
If I well understood, it's a scalar product between the flow solution and the adjoint solution at a given node, which is performed by solution_adjoint_mean.cpp and stored in AuxVar.
Afterwards, this value is multiplied by the sensitivity of the node's displacement w.r.t. a given design variable in order to compose the sensitivity of the objective function w.r.t. this design variable.
Could you explain the meaning of the variable Sensitivity, as well as the mathematical formulation used to compute the final sensitivities of the objective function w.r.t. the design variables?
Thanks in advance.
|August 26, 2013, 16:20||
Join Date: Jan 2013
Location: Long Beach, CA
Posts: 342Rep Power: 6
The implemented formulation is described in several articles like:
The variable (surface) sensitivity is the derivative of the objective function with respect to perturbations of the geometry (in the normal direction).
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