Data-Mapping between non-match domains

Using preCICE
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1

I have currently managed to couple Calculix with my in-house codes via preCICE. To evaluate its FSI simulation performance, I use this work-flow to solve the static aeroelasticity problem –HIRENASD.

However the case HIRENASD use not exactly the same model on both sides, which means the interface shape gathered from the fluid solver cannot match exactly its counterpart from solid one. It makes data mapping failing all the time and the error between coupling data is nonnegligible.

Till now I am still working on it. Nearest-neighbor mapping and RBF mapping have all been used but in vain, so I have no idea but write for help. Thanks a lot for your help!

2

In my in-house codes I set the force per node manually with (0,0,0.1). And I add a few lines in Calculix/adapter/PreciceInterface.c/setNodeForces() to print the force every node receive. The printed force is far more larger than (0,0,0.1) so I think there be errors during data mapping.