Aeroacoustics of a supersonic rectangular jet: Experiments and LES predictions

Joseph W. Nichols; Frank E. Ham; Sanjiva K. Lele; James E. Bridges

doi:10.2514/6.2012-678

Aeroacoustics of a supersonic rectangular jet: Experiments and LES predictions

Joseph W. Nichols, Frank E. Ham, Sanjiva K. Lele, James E. Bridges

Aerospace Engineering and Mechanics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

18 Scopus citations

Abstract

We investigate the noise from isothermal and heated under-expanded supersonic turbulent jets issuing from a rectangular nozzle of aspect ratio 4:1 using high-fidelity unstructured large-eddy simulation (LES) and acoustic projection based on the Ffowcs-Williams Hawkings (FWH) equations. The nozzle/flow interaction is directly included by simulating the flow in and around the nozzle in addition to the jet plume downstream. A grid resolution study is performed and the high-fidelity simulation results are validated against laboratory measurements using a nozzle of precisely the same geometry. An isothermal jet and a heated jet sharing the same jet Mach number (M _j = 1.4) are simulated and the results are compared to one another and to the experimental measurements to examine heating effects in the context of supersonic rectangular jet noise.

Original language	English (US)
Title of host publication	50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
DOIs	https://doi.org/10.2514/6.2012-678
State	Published - Dec 1 2012
Event	50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition - Nashville, TN, United States Duration: Jan 9 2012 → Jan 12 2012

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Other	50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
Country/Territory	United States
City	Nashville, TN
Period	1/9/12 → 1/12/12

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Nichols, JW, Ham, FE, Lele, SK & Bridges, JE 2012, Aeroacoustics of a supersonic rectangular jet: Experiments and LES predictions. in 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition., AIAA 2012-0678, 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, Nashville, TN, United States, 1/9/12. https://doi.org/10.2514/6.2012-678

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title = "Aeroacoustics of a supersonic rectangular jet: Experiments and LES predictions",

abstract = "We investigate the noise from isothermal and heated under-expanded supersonic turbulent jets issuing from a rectangular nozzle of aspect ratio 4:1 using high-fidelity unstructured large-eddy simulation (LES) and acoustic projection based on the Ffowcs-Williams Hawkings (FWH) equations. The nozzle/flow interaction is directly included by simulating the flow in and around the nozzle in addition to the jet plume downstream. A grid resolution study is performed and the high-fidelity simulation results are validated against laboratory measurements using a nozzle of precisely the same geometry. An isothermal jet and a heated jet sharing the same jet Mach number (M j = 1.4) are simulated and the results are compared to one another and to the experimental measurements to examine heating effects in the context of supersonic rectangular jet noise.",

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N2 - We investigate the noise from isothermal and heated under-expanded supersonic turbulent jets issuing from a rectangular nozzle of aspect ratio 4:1 using high-fidelity unstructured large-eddy simulation (LES) and acoustic projection based on the Ffowcs-Williams Hawkings (FWH) equations. The nozzle/flow interaction is directly included by simulating the flow in and around the nozzle in addition to the jet plume downstream. A grid resolution study is performed and the high-fidelity simulation results are validated against laboratory measurements using a nozzle of precisely the same geometry. An isothermal jet and a heated jet sharing the same jet Mach number (M j = 1.4) are simulated and the results are compared to one another and to the experimental measurements to examine heating effects in the context of supersonic rectangular jet noise.

AB - We investigate the noise from isothermal and heated under-expanded supersonic turbulent jets issuing from a rectangular nozzle of aspect ratio 4:1 using high-fidelity unstructured large-eddy simulation (LES) and acoustic projection based on the Ffowcs-Williams Hawkings (FWH) equations. The nozzle/flow interaction is directly included by simulating the flow in and around the nozzle in addition to the jet plume downstream. A grid resolution study is performed and the high-fidelity simulation results are validated against laboratory measurements using a nozzle of precisely the same geometry. An isothermal jet and a heated jet sharing the same jet Mach number (M j = 1.4) are simulated and the results are compared to one another and to the experimental measurements to examine heating effects in the context of supersonic rectangular jet noise.

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Aeroacoustics of a supersonic rectangular jet: Experiments and LES predictions

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