Thank you for using FEATool,
You can find step-by-step tutorial instructions and a FEATool FE script file that runs the Taylor-Couette model from the links below:
https://www.featool.com/doc/fluid_dynamics_10_taylor_couette1https://www.featool.com/tutorials/04_Fluid_Dynamics/09_taylor_couette1.fesNote that since periodic boundary conditions aren't yet available in the GUI, no-slip conditions have been used on the top and bottom boundaries, and therefore no peiodic axial movement will be developed (the Taylor-Couette vortices are still clearly visible though).