Hi Jens,
I am also converting a Bladed model to OpenFAST. I’m just wondering how you dealt with the missing DOFs in OpenFAST? That is: tower torsion, nacelle tilt, and main shaft bending? I found a workaround for tower torsion here (Tower Eigenfrequencies of NREL 5MW Turbine - #60 by Jason.Jonkman) but I’m wondering about the other two.
Thanks!
Best,
Drew Gertz
Principal Consultant
Northwind Engineering OÜ
www.northwindengineering.com