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• W4282571497 abstract "Aerodynamic and acoustic data from unsteady numerical simulations of the High-Lift Common Research Model are compared with experimental measurements from an open-jet wind tunnel test of a 10%-scale model. Time-averaged surface pressure data are in good agreement for all configurations evaluated during the test. Unsteady surface pressure spectra from the leading-edge slat and the nose of the main element are presented, demonstrating that the highest levels are associated with the wakes of slat brackets. At these locations the simulations and experiment match reasonably well at low enough frequencies (f < 10 kHz based on the model scale) before excessive numerical dissipation leads to a rapid roll off in the predicted frequency spectra. The agreement is inconsistent at other locations on the slat and main-element surfaces, where the pressure fluctuation levels are lower. Noise predictions using a synthetic microphone array are compared with equivalent experimental results, and the changes in levels predicted between three configurations are similar to those measured. However, some details of the noise predictions are inconsistent with the experiment, and the use of solid-surface, instead of porous-surface, data for the acoustic processing of the simulations likely contributes to the discrepancies. All simulations were completed before the test, and, despite some shortcomings, they provided valuable insight into the aeroacoustic performance of the model that greatly aided test planning and execution. Hence, the post-test comparisons presented here allow an assessment of the predictive methodology in the context of a realistic high-lift configuration at model scale." @default.
• W4282571497 created "2022-06-14" @default.
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• W4282571497 date "2022-06-13" @default.
• W4282571497 modified "2023-09-27" @default.
• W4282571497 title "Aeroacoustic Simulations of the High-Lift Common Research Model and Validation with Experiment" @default.
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• W4282571497 doi "https://doi.org/10.2514/6.2022-2806" @default.
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