Hi, I am trying to simulate a water cooling structure using the CHT solver. I have definded a solid using water material properties. then I definded the fluid domain by defining the input as well as the output face. After that I defined the same faces as openings defining input / output direction as well as flow rate and temperatur. 

Problem I have is that the solver gives back an error as follows:

the shape xxxx of material water liquid (20C) (CHT) has a dynamic viscosity, which is noly considered for simulation when occurring in the background material or in a fluid domain. The shape will not be treated as a fluid.

What am I doing wrong?

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