Identification of Flow-Induced Noise Sources on Two-Dimensional High Lift Devices of Commuter Aircraft

Arifin Rasyadi Soemaryanto, Muhammad Fajar, Teuku M Ichwanul Hakim, Sinung Tirtha Pinindriya, Kurnia Hidayat

Abstract

A numerical predictive tool of flow induced noise generated by deployed high-lift devices of commuter aircraft is presented in this paper. The aircraft high-lift devices are consisting of vane and flap component. The aim of this study is to identify the sources of flow induced noise on the wing and flap cross-section of the aircraft. This study is investigated only two-dimensional effects and two configuration of flap deflection. A numerical computation is carried out using a CFD software with Large Eddy Simulation fluid turbulence model and Ffowcs-Williams & Hawkings analogy for acoustic prediction. Several sound receivers have been installed on far-field and near-field region of the wing-vane-flap cross-section of aircraft to measure the sound spectra. It has been identified that on the cavity of wing and vane-flap cross-section has the highest sound pressure level than another region. There is a vortical separation and shear layer which is contributed to the generation of sound emission downward the cross-section

Keywords

computational aeroacoustics, computational aerodynamics, high-lift devices, aircraft design

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