problem in CFX solver about isolated volumes

Yuan

Dear all CFX experts:

When we tried to run CFX solver, it terminated with error about isolated volumes as following. We couldn't sort this out and all the setting in Pre seems fine. Some said that it was nothing to do with isolated volumes but the setting of reference pressure. Since we set the reference pressure to be o pa before. However, same error occourred after we set the reference pressure to be 1 atm.

we appreciate any reply from you.

Best regards,

Yuan

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

Impeller Inblock Outblock

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". ************************************************** ***