Turbulent boundary layer boundary "ON" setting

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Hi,

I am currently using NekRSv24.0. I am working on a turbulent boundary layer simulation. Currently, in order to reduce the energy reflection at the upper boundary, I try to use the ".usr" file to define the upper boundary (No.3) as "ON".

However, when running “nekrs --setup tbl_8000_5m.par”, the problem "Found unsupport BC type: 'MSH'" occurs.

Therefore, I use another way, that is, define "boundaryTypeMap = inlet, outlet, shl, wall" in ".par", and set "void codedFixedGradientVelocity(bcData *bc)" in ".oudf"

I would like to ask two questions about Nekrs boundary layer settings
(1) Does Nekrs v24.0 still support the boundary setting of "ON", or is there a problem in my .usr definition?

(2) I am using "boundaryTypeMap" and "void codedFixedGradientVelocity(bcData *bc)", can I achieve the same boundary layer effect as "ON" in Nek5000?

I hope we can discuss Nekrs v24.0 setup further.
Thanks for your help.

Best regards.