Chee Min Leong

Yes. It is a nonlinear flutter for the first mode shape which is what I am trying to model. As shown in the video between 0:05 to 0:20, the motion of the pipe is generally on a single plane.

Hence, it is possible to use symmetry which is what I am currently working on as well but was wondering if it could also be done in 2.5D to reduce computation time.