Aeroacoustics of a supersonic rectangular jet: Experiments and LES predictions

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

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

17 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 languageEnglish (US)
Title of host publication50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
DOIs
StatePublished - Dec 1 2012
Event50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition - Nashville, TN, United States
Duration: Jan 9 2012Jan 12 2012

Other

Other50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
Country/TerritoryUnited States
CityNashville, TN
Period1/9/121/12/12

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