how to create a rotating frame in hm for domain

What is your end objective in terms of output?Could you please elaborate.

Sir i am working on a vertical axis wind turbine project, in which befor making the the actual model, I wanted to get some analytical data for that. i made two domains

one with rotating blades and one for free stream condition. i can give you the geometry which i made   and i want to know how can i connect these two domains interface

Unable to find an attachment - read this blog

Thanks for sharing files but still your requirement is not clear to me in terms of output.Here in Hypermesh preprocessor you would able to create Finite element model for Structural simulation.For example if you perform Static analysis using Optistruct you would get stress displacement as an output .If you want to extract forces out of mechanism of blade & external domain then you should use Multibody dynamics solver Motionsolve. 

sir i am doing an external flow simulation and with fsi modeling

your requirement seems to me like CFD simulation.If you are Altair commercial customer & using Acusolve then you can refer below Resource library material.PFA screenshot for same.You could post this query in to Acusolve Solvers category for better solution.Please let us know if you find any difficulty for posting your query.

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