NUMERICAL SIMULATION OF THE UNSTEADY AERODYNAMICS IN AN AXIAL COUNTER-ROTATING FAN STAGE
Résumé
The purpose of this work is to investigate and to understand the
unsteady flow behavior in axial counter-rotating fan stage.
3D numerical simulations combined with experimental
investigations were carried out, taking into account the entire
environment of the stage. The numerical results were compared
to the measurement data in terms of overall performance and
local unsteady variables.
In the numerical procedure, the complete geometric details of the
fan stage were taken into account, such as tip clearances, motor
casings, etc. enabling an accurate presentation of the complex
unsteady flow.
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