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- W2084820432 abstract "In previous work a RANS based simulation technique for the simulation of broadband slat noise was established. The computational approach is based on acoustic perturbation equations forced by stochastic sound sources to simulate sound generation and radiation in space and time. Good agreement was found between predicted and measured slat noise spectra and for trailing edge noise generated at a NACA 0012 airfoil. In this work the simulation approach isapplied to generic high-lift noise problems defined in the framework of the European project VALIANT. The problems considered are sound generation at the slat and the flap of simplified high-lift geometries. Results of the time-averaged mean flow and turbulence statistics from RANS are evaluated and compared to measurements. A comparison of the statistics of the stochastic fluctuations computed with the stochastic turbulence model FRPM with flow datais provided. Sound generated by the stochastic source model is evaluated and compared to measurements. As a general outcome of the study, the agreement between the RANS flowfields to measurements is quite good. The reconstruction of the turbulence statistics by FRPM is in general accurate, but in some reagions it differes from the target statistic. The agreement of the acoustic far field predictions to the measured data is satisfyings. The overall procedureis with a computational effort of around two days quite short." @default.
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- W2084820432 date "2012-06-04" @default.
- W2084820432 modified "2023-09-23" @default.
- W2084820432 title "A generic computational study of broadband high-lift noise generation for simplified slat and flap problems" @default.
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- W2084820432 doi "https://doi.org/10.2514/6.2012-2102" @default.
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