The phase-lagged boundary condition concept is briefly reviewed, both for its classical application to vibrating blades and rotor/stator interaction. A simple conceptual model for rotor/stator interaction, compatible with the phase lagged boundary conditions is proposed. Careful comparisons between single-passage and full annulus inviscid simulations have been made to validate the method and demonstrate that potential differences between both approaches are associated to slight changes in the scheme due to the phase-shifted periodic boundary conditions. Finally the Erdos and Shape Correction methods are compared.

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