The prediction of broadband shock-associated noise from dualstream and rectangular jets using RANS CFD

Steven A.E. Miller, Philip John Morris

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

7 Citations (Scopus)

Abstract

Supersonic jets operating off-design produce broadband shock-associated noise. Broadband shock-associated noise is characterized by multiple broadband peaks in the far-field and is often the dominant source of noise towards the sideline and upstream direction relative to the jet axis. It is due to large scale coherent turbulence structures in the jet shear layers interacting with the shock cell structure. A broadband shock-associated noise model recently developed by the authors predicts this noise component from solutions to the Reynolds averaged Navier-Stokes equations using a two-equation turbulence model. The broadband shock-associated noise model is applied to dualstream and rectangular nozzles operating supersonically, heated, and off-design. The dualstream jet broadband shock-associated noise predictions are conducted for cases when the core jet is supersonic and the fan jet is subsonic, the core jet is subsonic and the fan jet is supersonic, and when both jet streams operate supersonically. Rectangular jet predictions are shown for a convergent-divergent nozzle operating both over- and under-expanded for cold and heated conditions. The original model implementation has been heavily modified to make accurate predictions for the dualstream jets. It is also argued that for over-expanded jets the oblique shock wave attached to the nozzle lip contributes little to broadband shock-associated noise. All predictions are compared with experiments.

Original languageEnglish (US)
Title of host publication16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference)
StatePublished - Dec 6 2010
Event16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference) - Stockholm, Sweden
Duration: Jun 7 2010Jun 9 2010

Publication series

Name16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference)

Other

Other16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference)
CountrySweden
CityStockholm
Period6/7/106/9/10

Fingerprint

charge flow devices
Computational fluid dynamics
shock
broadband
predictions
Nozzles
fans
nozzles
Fans
convergent-divergent nozzles
oblique shock waves
noise prediction
turbulence models
shear layers
Navier-Stokes equation
upstream
Turbulence models
Shock waves
far fields
Navier Stokes equations

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Acoustics and Ultrasonics

Cite this

Miller, S. A. E., & Morris, P. J. (2010). The prediction of broadband shock-associated noise from dualstream and rectangular jets using RANS CFD. In 16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference) [2010-3730] (16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference)).
Miller, Steven A.E. ; Morris, Philip John. / The prediction of broadband shock-associated noise from dualstream and rectangular jets using RANS CFD. 16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference). 2010. (16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference)).
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abstract = "Supersonic jets operating off-design produce broadband shock-associated noise. Broadband shock-associated noise is characterized by multiple broadband peaks in the far-field and is often the dominant source of noise towards the sideline and upstream direction relative to the jet axis. It is due to large scale coherent turbulence structures in the jet shear layers interacting with the shock cell structure. A broadband shock-associated noise model recently developed by the authors predicts this noise component from solutions to the Reynolds averaged Navier-Stokes equations using a two-equation turbulence model. The broadband shock-associated noise model is applied to dualstream and rectangular nozzles operating supersonically, heated, and off-design. The dualstream jet broadband shock-associated noise predictions are conducted for cases when the core jet is supersonic and the fan jet is subsonic, the core jet is subsonic and the fan jet is supersonic, and when both jet streams operate supersonically. Rectangular jet predictions are shown for a convergent-divergent nozzle operating both over- and under-expanded for cold and heated conditions. The original model implementation has been heavily modified to make accurate predictions for the dualstream jets. It is also argued that for over-expanded jets the oblique shock wave attached to the nozzle lip contributes little to broadband shock-associated noise. All predictions are compared with experiments.",
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Miller, SAE & Morris, PJ 2010, The prediction of broadband shock-associated noise from dualstream and rectangular jets using RANS CFD. in 16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference)., 2010-3730, 16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference), 16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference), Stockholm, Sweden, 6/7/10.

The prediction of broadband shock-associated noise from dualstream and rectangular jets using RANS CFD. / Miller, Steven A.E.; Morris, Philip John.

16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference). 2010. 2010-3730 (16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference)).

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

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Miller SAE, Morris PJ. The prediction of broadband shock-associated noise from dualstream and rectangular jets using RANS CFD. In 16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference). 2010. 2010-3730. (16th AIAA/CEAS Aeroacoustics Conference (31st AIAA Aeroacoustics Conference)).