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April 29, 2014, 07:30 |
boundary conditions to minimize drag
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#1 |
New Member
Olivia Nalen
Join Date: Apr 2014
Location: Vancouver
Posts: 19
Rep Power: 12 |
Hello everyone,
I'm trying to use AdjointShapeOptimizationFoam to optimize a drag coefficient of an airfoil. I need to define boundary conditions wrt. cost function of drag coefficient. I have already seen in literature (Othmer) how to define the boundary conditions to minimize total pressure loss or power loss for ducted flows, but unfortunately I don't understand how should I change "adjointOutletPressure" and "adjointOutletVelocity" to minimize the drag coefficient of an airfoil? So far, I've set Ua and pa = 0 at the inlet and at the outlet, because only the airfoil contour is important for this problem, but I still don't get how should I adjust the adjoint boundariy conditions at the airfoil contour? I hope someone can help me at this Kind regards, Olivia |
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May 2, 2014, 08:08 |
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#2 |
New Member
Olivia Nalen
Join Date: Apr 2014
Location: Vancouver
Posts: 19
Rep Power: 12 |
No one knows that?
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May 26, 2014, 10:21 |
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#3 |
Member
Roland
Join Date: Mar 2009
Location: Netherlands
Posts: 93
Rep Power: 17 |
Hi,
This paper was helpful to me (On the Computation of Flow Sensitivities from Boundary Integrals): www.scs.gmu.edu/~rlohner/pages/publications/papers/reno04adj.pdf Good luck! Sylvester |
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May 29, 2014, 15:54 |
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#4 |
New Member
Olivia Nalen
Join Date: Apr 2014
Location: Vancouver
Posts: 19
Rep Power: 12 |
Thanks a lot! =)
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Tags |
boundaries, drag, minimize |
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