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- W2313330164 abstract "There are several approaches for numerical noise estimation, with different levels of accuracy and computational cost. In this study, we numerically simulate the synchronized perturbed fields generated from supersonic axisymmetric jet flows. Input perturbations are introduced in the mean jet flow to produce coherent structures. Then, the perturbed and acoustic fields are predicted at different frequencies by integrating the linearized Euler equations. This numerical approach is used for its simplicity and accuracy. We investigate the effect of the perturbation frequency on different characteristics of the acoustic field. We illustrate the synchronization phenomenon that occurs in the acoustic field, where its temporal frequency is synchronized to the perturbation frequency over a wide range as compared to the perturbed-wakes problem in fluid mechanics. Some results suggest that the perturbation frequency can be used for the purpose of noise control by altering the acoustic propagation pattern." @default.
- W2313330164 created "2016-06-24" @default.
- W2313330164 creator A5052195195 @default.
- W2313330164 date "2008-01-07" @default.
- W2313330164 modified "2023-09-25" @default.
- W2313330164 title "Directivity and Noise Propagation for Supersonic Free Jets" @default.
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- W2313330164 doi "https://doi.org/10.2514/6.2008-23" @default.
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