Flow along curve_Mesh Help

Hi All
I’ve tried a lot, but I don’t know what’s causing the problem
The same length of the curves.
Thanks.
Flow along curve.3dm (17.9 MB)

Hello - there are mesh faces that extend the full length of the input mesh -

image

mesh edges are not deformed so this will never work - try QuadRemesh or get the object as a more evenly divided mesh.

-Pascal