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|
|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
|Other||50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition|
|Period||1/9/12 → 1/12/12|