I am wondering if a loop reactor (i.e. a reactor which connects the outlet to its inlet by pump) can be set up in FEATool? I checked the boundary condition and built-in examples, but I cannot find such feature.
I'm not familiar with how a loop reactor works. But if you want to connect two boundaries, it sounds like you want to use periodic boundary conditions. These types of boundary conditions are not yet part of the standard UI toolbox interface and have to be implemented with custom functionality as discussed here:
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