Comments (1)
Hi @wjsjtu123,
when you load an .stl
mesh, by default the (rotation) center of the mesh is set to the center of its bounding box. This is correct for 2- or 4-bladed propellers, but fails for 3- or 5-bladed propellers; their rotation center is offset from the bounding box center. Here an illustration:
You can figure out this offset with some geometry.
The solution is to manually correct the position of the mesh center, with
float3 offset = float3(...);
propeller->set_center(propeller->get_bounding_box_center()+offset);
The specified mesh center is used as the rotation center during lbm.voxelize_mesh_on_device(propeller, ...)
and propeller->rotate(...)
.
Kind regards,
Moritz
from fluidx3d.
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from fluidx3d.