Prediction of noise from jets with different nozzle geometries

Umesh Paliath, Philip J. Morris

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations

Abstract

This paper describes simulations of the flow development and noise radiation of a circular and a square jet. The three-dimensional Navier-Stokes are solved using the Detached Eddy Simulation as the turbulence model. The jet nozzles are included in the calculations. To simulate the excitation of the jet plume by the unsteadiness upstream of the jet exit a random excitation is implemented just downstream of the nozzle exit. The predicted mean flow Held development is compared with experimental measurements and good agreement is obtained. The radiated noise is calculated using the permeable surface Ffowcs Williams-Hawkings wave extrapolation method. Predictions of the noise spectra for different observer angles and the overall sound pressure level directivity are made. The predictions show good agreement with the experimental data. The radiated noise characteristics are shown to be similar for the two jet geometries.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - 10th AIAA/CEAS Aeroacoustics Conference
Pages2559-2568
Number of pages10
StatePublished - Dec 1 2004
EventCollection of Technical Papers - 10th AIAA/CEAS Aeroacoustics Conference - Manchester, United Kingdom
Duration: May 10 2004May 12 2004

Publication series

NameCollection of Technical Papers - 10th AIAA/CEAS Aeroacoustics Conference
Volume3

Other

OtherCollection of Technical Papers - 10th AIAA/CEAS Aeroacoustics Conference
CountryUnited Kingdom
CityManchester
Period5/10/045/12/04

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Paliath, U., & Morris, P. J. (2004). Prediction of noise from jets with different nozzle geometries. In Collection of Technical Papers - 10th AIAA/CEAS Aeroacoustics Conference (pp. 2559-2568). (Collection of Technical Papers - 10th AIAA/CEAS Aeroacoustics Conference; Vol. 3).