Help on periodic boundary condition
I am trying to simulate a 3D incompressible, laminar flow in a micro square duct. Here are input parameters:
1. Duct size: 200x200x200 micrometer.Periodic boundary condition was applied at inlet and outlet of the duct. However, when I specified the pressure drop and solved (I chose to specify the pressure drop in spite of mass flow rate), it converged after only 1 iteration and the wall shear stress is always zero. It's impossible but I don't know where this issue comes from.
I highly appreciate for any help.
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