Technology Transfer

A Strong Expertise in Turbofan Aeroacoustics

Applications

Contra-rotating fan model
Fan inlet 3D grid

 > Aeronautics

• High-performance, low-noise advanced engine design.
• Aeroacoustic optimisation of turbofans.

 >  Environment

• Environmentally friendly air traffic around airports.

Keywords

• Engines, Turbofans, Nacelles, Noise reduction, Fan noise sources, Fan performances, Acoustic propagation in ducted fans.

Advantages

• 3D hybrid computations providing both noise generation and propagation/radiation analyses (using aerodynamic and acoustic code coupling).
• Direct comparisons with experimental database from test facilities.

Facilities

• CEPRA19 anechoïc wind tunnel, RACE (SNECMA) fan stage rig.

Description

• RANS and Euler codes, integral formulations, source modeling.
• Source-to-farfield aeroacoustic simulations in non-uniform flow, with/without liners.

Customers

• SNECMA Moteurs (SAFRAN), Airbus.

References

C. Polacsek, S. Burguburu, S. Redonnet, M. Terracol, Numerical Simulations of Fan Interaction Noise Using a Hybrid Approach, AIAA Journal, Vol. 44, No. 6, 2006.

      Entropy snapshot ( elsA code) Acoustic mode propagation
(sAbrinA code+)

Last Update: 12 Octobre 2006 - © ONERA 2009 - Terms of use