Hi Venkatesh
To gain a more comprehensive understanding of these features and their applications within the Fluid CFX module, I recommend referring to the ANSYS documentation. I am sharing some documentation regarding these settings. Hope this will clear your doubts.
5.3.3. General Connection (ansys.com)
11.4. Frame Change Models (ansys.com)
If the above links are not accessible, please see this thread: How to access the ANSYS Online Help
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