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hi erveryone,
i have some problem my project. Mixing model with rotating impeller. the some problem i dont understand and how to repair that:

2 isolated fluid regions were found in the following set of
coupled domains:

R
S

If the isolated regions do not have the pressure level set either
by the boundary conditions or using a reference pressure equation,
you may encounter severe robustness problems.

This situation may have arisen because a domain interface was not
properly defined during problem setup. Please carefully check
the setup.

The solver will stop now and write a results file. The isolated
regions can be visualised in CFX Post by making plots of the
variable "Isolated Volumes".

If you are sure that the pressure level is set in each isolated
fluid region then you can force the solver to turn off this check
by setting the expert parameter "check isolated regions = f".
http://www.4shared.com/file/GNtjMbVv/model.html