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Acoustic perturbation equations based on flow decomposition via source filtering
A family of acoustic perturbation equations is derived for the simulation of flow-induced acoustic fields in time and space. The mean flow convection and refraction effects are part of the simulationExpand
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Broadband slat noise prediction based on CAA and stochastic sound sources from a fast random particle-mesh (RPM) method
Abstract The application of a low-cost computational aeroacoustics (CAA) approach to a slat noise problem is studied. A fast and efficient stochastic method is introduced to model the unsteadyExpand
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Sweeping Sound Generation in Jets Realized with a Random Particle-Mesh Method
the sound spectrum in a manner that cannot be explained based on the classical Kolmogorov-theory of turbulence. But because of the lack of appropriate methods these findings could not be incorporatedExpand
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On the simulation of trailing edge noise with a hybrid LES/APE method
A hybrid method is applied to predict trailing edge noise based on a large eddy simulation (LES) of the compressible flow problem and acoustic perturbation equations (APE) for the time-dependentExpand
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CAA broadband noise prediction for aeroacoustic design
Abstract The current status of a computational aeroacoustics (CAA) approach to simulate broadband noise is reviewed. The method rests on the use of steady Reynolds averaged Navier–Stokes (RANS)Expand
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RANS/CAA based prediction of NACA 0012 broadband trailing edge noise and experimental validation
The prediction quality of a fast Computational Aeroacoustics (CAA) approach is studied for noise generated at a NACA 0012 trailing edge. Broadband spectra, the power law underlying their Mach numberExpand
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Broadband Trailing-Edge Noise Predictions| Overview of BANC-III Results
The Third Workshop on Benchmark Problems for Airframe Noise Computations, BANC-III, was held on 14-15 June 2014 in Atlanta, Georgia, USA. The objective of this workshop was to assess the presentExpand
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Spectral broadening of jet engine turbine tones
The process of turbulent scattering is studied for the generic experiment conducted by Candel et al.1 applying an analytic weak scattering model and CAA computations. For the analytic weak scatteringExpand
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RPM - the fast Random Particle-Mesh method to realize unsteady turbulent sound sources and velocity fields for CAA applications.
The simulation of broadband noise with CAA techniques is discussed. Unsteady broadband sound sources are modeled in the time-domain with a highly efficient computational method. The generatedExpand
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