Wind turbine tower

Hello everyone,

I would like to design a wind turbine tower, along with the blades, in COMSOL 4.3. The parameters are:

Height = 87.6m
Base dia = 6m
Base Steel thickness = 0.035m
Top dia =3.87m
Top Steel thickness = 0.025m
Blade length = 61.5m

I am very new to COMSOL. Can anyone please help me, how to go about in building the model?

Thank You