The following limitations apply to modeling streamwise-periodic flow:
The flow must be incompressible.
The geometry must be translationally periodic. Note that transient simulations for fully-developed fluid flow are not valid with translational periodic flow.
If one of the density-based solvers is used, you can specify only the pressure jump; for the pressure-based solver, you can specify either the pressure jump or the mass flow rate.
No net mass addition through inlets/exits or extra source terms is allowed.
Species can be modeled only if inlets/exits (without net mass addition) are included in the problem. Reacting flows are not permitted.
Discrete phase and multiphase modeling are not allowed.
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