Do some options to remain some boundary unchange?

[z-g-h]

Hi, professor
I am using myself couple boundary to optimize multistage turbomachinery. My geometry and FFD box are there (Red line is myself mixing-Plane boundary). When I tried to run this case, I only wanted to deform the shape of the blade, but I found that the mixing plane boundary also deforms. How should I set it up to prevent deformation on this boundary? Thanks for your help!

[friedenhe]

You can add or bc["type"] == "mixingPlane" to here

dafoam/dafoam/pyDAFoam.py

Line 3671 in 08422e9

if bc["type"] == "wall" or bc["type"] == "slip" or bc["type"] == "cyclic":

. By default, we don't change wall and cyclic BC types if they are not within the FFD box. You can extend it for the mixingPlan type.