@inproceedings{ed75bcae2cb742d19a0f8ba4977fb15b,
title = "Analysis and prediction of the dual-stream Hot Jet-Flap interaction noise",
abstract = "The experimental investigation of jet-flap-interaction (JFI) noise on dual-stream hot jets is conducted in the full anechoic chamber of Beihang University. Detailed analysis revealed that the high frequency noise reflection by the flap surfaces and the dipole source directivity are eliminated by the strong refraction effect in dual-stream hot jet. Furthermore, the non-harmonic jet impingement tonal noise is generated by the feedback mechanism and its frequencies are in good agreement with Heller \& Bliss feedback prediction formula. In addition, the jet velocity has a significant effect on the broadband JFI noise. For the prediction of jet-flap interaction noise, a semi-empirical two-source prediction model is developed based on previous study by present authors. The first source is jet alone noise and the second source is caused by the flap trailing edge scattering mechanism. This paper improved the prediction model in term of amplitude function and compared the predicted results with the experimental measurements. It is demonstrated that the semi-empirical two-source prediction model agree well with experimental results at different observer angles and jet operating conditions.",
keywords = "Aeroacoustic, Installation effect, Jet noise, Jet-flap noise",
author = "Baohong Bai and Xiaodong Li and Zhiyuan Xu",
note = "Publisher Copyright: {\textcopyright} {"}Advances in Acoustics, Noise and Vibration - 2021{"} Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021. All rights reserved.; 27th International Congress on Sound and Vibration, ICSV 2021 ; Conference date: 11-07-2021 Through 16-07-2021",
year = "2021",
language = "英语",
series = "{"}Advances in Acoustics, Noise and Vibration - 2021{"} Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021",
publisher = "Silesian University Press",
editor = "Eleonora Carletti and Malcolm Crocker and Marek Pawelczyk and Jiri Tuma",
booktitle = "{"}Advances in Acoustics, Noise and Vibration - 2021{"} Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021",
}