Computational Fluid Dynamics and Aeroacoustics

Numerical Aero-Acoustics of Fans
Projects in progress

Computation of the Fan Noise - elsA / sAbrinA Coupling

AITEC
“Development of an equivalent source model for computing the interaction noise” - 2005-2009

  
Analytical reference solution and numerical ExFan-sAbrinA solution

OPTIM
“Establishment of an Onera optimization chain for reducing rotor-stator noise” - 2005-2009

Aero-mechanical-acoustic optimization loop (bigger)

PROBAND
“Simulations of broadband noise generation mechanisms” - 2005-2008

Interaction rotor/stator elsA_LES (2D)

VITAL
“Aero-acoustic simulations of counter-rotating turbofan noise lines” - 2005-2009

 
Counter-rotating turbofan

        
Mach number in the inlet (elsA) - left
& upstream propagation 3D mesh (sAbrinA) - right

Computation of the Installation Effects - sAbrinA Computations

LNA2
"Low Noise Aircraft" - 2005-2006

Airbus preliminary project which, among other things, includes an experimental and numerical study of the downstream acoustic radiation of fan noise, and of the possibility of masking it with a tail unit wing ("Rear Fuselage Nacelle" type aircraft).

Onera/DSNA (sAbrinA) activity: numerical simulations (2D or 3D-axisymmetric) of the downstream fan noise and possible installation effects due to a tail unit wing.

NACRE
"New Aircraft Concepts REsearch" - 2005-2009

European project mainly aimed at experimental and numerical studies of innovative concepts for quieter aircraft.

Onera/DSNA activity (sAbrinA): numerical simulations (3D-axi) of fan downstream noise.

VITAL
"EnVIronmenTALly Friendly Aero Engine" - 2005-2009

European project (IP) among whose objectives are the experimental and numerical study of innovative concepts for turbojets offering reduced pollutant emissions (chemical and acoustic).

Onera/DSNA activity (sAbrinA): numerical simulations (2D) of equivalent jet and load noises.

Last Update: 6 June 2006 - © ONERA 2009 - Terms of use