An overview of testing methods for aeroengine fan noise
We are now at a point where airframes, aeroengines and their integration require radical
changes to meet increasingly aggressive environmental targets. Generally, fan noise …
changes to meet increasingly aggressive environmental targets. Generally, fan noise …
Turbomachinery Noise Review
S Moreau, M Roger - … Journal of Turbomachinery, Propulsion and Power, 2024 - mdpi.com
The present paper is aimed at providing an updated review of prediction methods for the
aerodynamic noise of ducted rotor–stator stages. Indeed, ducted rotating-blade technologies …
aerodynamic noise of ducted rotor–stator stages. Indeed, ducted rotating-blade technologies …
Computational prediction and analysis of rotor noise generation in a turbulent wake
Large-eddy simulation is combined with the Ffowcs Williams–Hawkings equation to
investigate the noise generation by a 10-bladed rotor ingesting the turbulent wake of a …
investigate the noise generation by a 10-bladed rotor ingesting the turbulent wake of a …
Wall-modeled LES of flow over a Gaussian bump with strong pressure gradients and separation
The turbulent boundary layer over a Gaussian bump is computed by direct numerical
simulation (DNS) and wall-modeled large eddy simulation (WMLES) of the incompressible …
simulation (DNS) and wall-modeled large eddy simulation (WMLES) of the incompressible …
Unsteady simulations of a fan/outlet-guide-vane system: broadband-noise computation
The fan broadband noise of a rotor–stator system representing a turbofan aeroengine is
investigated using the improved delayed detached-eddy-simulation approach. The baseline …
investigated using the improved delayed detached-eddy-simulation approach. The baseline …
Identification of noise sources in a realistic turbofan rotor using large eddy simulation
P Kholodov, S Moreau - Acoustics, 2020 - mdpi.com
Large Eddy Simulation is performed using the NASA Source Diagnostic Test turbofan at
approach conditions (62% of the design speed). The simulation is performed in a periodic …
approach conditions (62% of the design speed). The simulation is performed in a periodic …
On the differences in noise predictions based on solid and permeable surface Ffowcs Williams–Hawkings integral solutions
PR Spalart, KV Belyaev, ML Shur… - International …, 2019 - journals.sagepub.com
The Ffowcs Williams–Hawkings equation is widely used in computational aeroacoustics to
post-process unsteady simulations and provide the sound at distances beyond the accurate …
post-process unsteady simulations and provide the sound at distances beyond the accurate …
Spiral flow instability between a rotor and a stator in high-speed turbomachinery and its relation to fan noise
T Suzuki - Journal of Fluid Mechanics, 2023 - cambridge.org
Hydrodynamic instabilities in the interstage of turbomachinery and their relation to fan
broadband noise are investigated over wide operating conditions. By applying compressible …
broadband noise are investigated over wide operating conditions. By applying compressible …
Unsteady simulations of a fan/outlet-guide-vane system: Aerodynamics and turbulence
The Paper presents the aerodynamic and turbulent aspects of a project devoted to creating
and validating a high-fidelity computational-fluid-dynamics-based system for the prediction …
and validating a high-fidelity computational-fluid-dynamics-based system for the prediction …
Rotor aeroacoustic response to an axisymmetric turbulent boundary layer
The acoustic response of a five-bladed rotor to an axisymmetric turbulent boundary layer at
the tail end of a body of revolution (BOR) is investigated numerically to elucidate the …
the tail end of a body of revolution (BOR) is investigated numerically to elucidate the …