Creating a interaction between liquid and wall
 

I am trying to create a model where a non-Newtonian fluid flows through a nozzle, thought the nozzle itself is made from rubber. Does anyone know how to specify the interactions between the fluid and the wall? Cause at the moment I am just using the default aluminium material as my wall?

Exactly what types of interactions are you trying to model apart from the no-slip effect?

Also the default aluminum material for the wall is for modelling wall conduction effects (it's strictly for modelling heat transfer) and is probably not applicable to this case.

Well I am wanting to see if there is any interactions between a rubber wall and the non-Newtonian fluid. So I can create a more accurate model. It was mentioned in passing that there are some values I can implement but not sure how I would go about doing so (still trying to get those values, just want to know if there is any methods I should be aware of).