Numerical assessment of fan blades screen effect on fan/OGV interaction tonal noise
Article dans une revue avec comité de lecture
Author
FOULQUIÉ, Charles 
KHELLADI, Sofiane DELIGANT, MichaelRAMÍREZ, LuisNOGUEIRA, XesúsMARDJONO, JackyAbstract
This work deals with sound generation and transmission in a fan stage. The study is done on a subsonic Fan stage and interaction noise between the fan wakes and the Outlet Guide Vanes (OGV) is considered. For this purpose, the Linearized Euler Equations (LEE) are solved with a steady axisymmetric flow. The acoustic sources are modelled by a scattering approach. Numerical simulations are carried out in an unwrapped cylindrical layer using a high-order finite volume solver. In order to explicitly take into account the moving fan blades into the propagation medium, a high-resolution sliding mesh technique is used. The simulation results, which highlight the screen effect of moving fan blades on fan/OGV interaction tones, are consistent with analytical literature.
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