I have designed a three body system. One body inside the another body 2. The 3rd body is inside the 2nd body. My problems are as follows

2) How can I make three separate bodies? Because when I am trying to mesh the three bodies separately by selecting one body, all three bodies are getting meshed. How to get three separate zones?

3) I want make the inner body 3 to rotate in a certain rotational speed. Do I have to use moving mesh? How is that done? -Do I have to use moving mesh for inner as well as outer bodies 2 and 3 both? How is that done?

Is there anyone who can really help me out of this problem? Any kind of help will be appreciable. I am using ANSYS FLUENT 14.5.

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