REPUBLIC OF SERBIA

MINISTRY OF DEFENCE

www.mod.gov.rs

MINISTRY OF DEFENCE

Material Resources Sector

Defensive Technologies Department

Military Technical Institute

www.vti.mod.gov.rs

aeroacoustic analysis of a jet nozzle

toni ivanov

University of Belgrade, Faculty of Mechanical Engineering, Belgrade, tivanov@mas.bg.ac.rs

Vasko fotev

University of Belgrade, Faculty of Mechanical Engineering, Belgrade, vfotev@mas.bg.ac.rs

nebojša petrović

University of Belgrade, Faculty of Mechanical Engineering, Belgrade, npetrovic@mas.bg.ac.rs

zorana trivković

University of Belgrade, Faculty of Mechanical Engineering, Belgrade, ztrivkovic@mas.bg.ac.rs

dragan komarov

University of Belgrade, Faculty of Mechanical Engineering, Belgrade, dkomarov@mas.bg.ac.rs

Abstract: Computational fluid dynamics (CFD) based on the finite volume method were used in order to obtain the aerodynamic characteristics of a jet nozzle. After the transient CFD results were gained the Ffowcs Williams-Hawking formulation for far-field noise modeling was used for aeroacoustic computation. A grid sensitivity was done and different turbulence models were tested. The obtained results were then compared with publicly available experimental data after which a conclusion was derived.

Keywords: computational aeroacoustics, computational fluid dynamics, jet noise.