aiaa_final_draft_2-5-2016.pdf (7.32 MB)
0/0

Far-field noise prediction of round and serrated jets with increasingly refined grids

Download (7.32 MB)
conference contribution
posted on 31.05.2016 by Matteo Angelino, Hao Xia, Miguel Moratilla-Vega, Gary Page
Turbulent jet large-eddy simulations (LES) are performed at Mach 0.9 and Reynolds number of 106. For subgrid scale stress modeling the σ-model is used. Solutions are obtained for a baseline axisymmetric (round) nozzle and a serrated (or chevron) nozzle with high bending and penetration, on grids ranging from 5 to 80 million grid points in order to assess the correlation between coarser and finer grid solutions. Computed mean and second-order fluctuating quantities of the turbulent near field compare favorably with measurements. The radiated far-field sound is predicted using the Ffowcs Williams and Hawkings (FW-H) surface integral method. Remarkable agreement of the predicted farfield sound directivity and spectra with measurements is obtained. A preliminary discussion is presented on the correlation and possible combination of multiple spectra from different grids.

Funding

This work is financially supported by UK Engineering and Physical Sciences Research Council (EPSRC) under grant number EP/M01391X/1

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

22nd AIAA/CEAS Aeroacoustics Conference

Citation

ANGELINO, M. ...et al., 2016. Far-field noise prediction of round and serrated jets with increasingly refined grids. Presented at the 22nd AIAA/CEAS Aeroacoustics Conference, Lyon, France 30th May- 1st June.

Publisher

© AIAA

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

02/02/2016

Publication date

2016

Notes

This paper was presented at the 22nd AIAA/CEAS Aeroacoustics Conference and the definitive published version is available at http://dx.doi.org/10.2514/6.2016-3047

Language

en

Location

Lyon, France

Exports

Logo branding

Keyword(s)

Exports