|May 17, 2014, 13:45||
Shape returning to the initial condition
Join Date: Jun 2013
Posts: 30Rep Power: 5
When i run the simulation for optimization, I find that after an initial deformation, it gradually tends to get back to the initial shape. This repeats again.
I know that there is better solution, so it cant be that the initial solution is best.
What could I be doing wrong?
Configuration file is attached.
NB: My objective is to minimize the lift, hence i have multiplied the objective with a negative number.
Please have a look and let me know what all things I could be doing wrong. I have to finish my project soon but I am getting stuck at different places with SU2
|June 4, 2015, 20:04||
Join Date: Jun 2015
Posts: 1Rep Power: 0
I have the same problem with the latest version of rotating NACA0012 test case. I don't get the same result with the tutorial without changing anything. NACA0012 goes back to NACA0012 after 37 designs and stays there.
shape_optimization.py -f rotating_NACA0012.cfg
Also I can't get the results in Figure (8): Function evaluation history in tutorial. Drag does not change much during evaluations and at the end goes back to the same location.
Here is the output, looks like OBJFUN and GNORM is not changing much
NIT FC OBJFUN GNORM
1 1 2.158280E-06 2.223470E-03
2 12 2.158351E-06 2.224594E-03
Developers: can you please check this?
|Thread||Thread Starter||Forum||Replies||Last Post|
|pimpleFoam: turbulence->correct(); is not executed when using residualControl||hfs||OpenFOAM Running, Solving & CFD||3||October 29, 2013 09:35|
|calculation stops after few time steps||sivakumar||OpenFOAM Running, Solving & CFD||7||March 17, 2013 07:37|
|pisoFoam with k-epsilon turb blows up - Some questions||Heroic||OpenFOAM Running, Solving & CFD||26||December 17, 2012 04:34|
|High Courant Number @ icoFoam||Artex85||OpenFOAM Running, Solving & CFD||9||January 3, 2012 09:06|
|Upgraded from Karmic Koala 9.10 to Lucid Lynx10.04.3||bookie56||OpenFOAM Installation||8||August 13, 2011 04:03|