TY - GEN

T1 - Review of the current status of jet noise predictions using large-eddy simulation (invited)

AU - Bodony, Daniel J.

AU - Lele, Sanjiva K.

PY - 2006

Y1 - 2006

N2 - A survey of the current applications of large-eddy simulation in the prediction of noise from turbulent jets is given. After summarizing the numerical techniques used the data predicted by the simulations are given at conditions of subsonic, heated jets to supersonic, unheated jets. Mach numbers between 0.3 and 2.0 are considered. Following the data presentation an analysis of the trends exhibited by the data is given, with special attention paid to relationship between numerical and/or modeling choices and the prediction accuracy. The data supports the conclusion that the most limiting factor in current large-eddy simulations is the thickness of the initial shear layer, which is roughly one order-of-magnitude thicker than what is found experimentally. The influence of inflow forcing is also discussed in depth. A listing of some of the open questions and future directions concerning jet noise predictions using large-eddy simulation concludes the survey.

AB - A survey of the current applications of large-eddy simulation in the prediction of noise from turbulent jets is given. After summarizing the numerical techniques used the data predicted by the simulations are given at conditions of subsonic, heated jets to supersonic, unheated jets. Mach numbers between 0.3 and 2.0 are considered. Following the data presentation an analysis of the trends exhibited by the data is given, with special attention paid to relationship between numerical and/or modeling choices and the prediction accuracy. The data supports the conclusion that the most limiting factor in current large-eddy simulations is the thickness of the initial shear layer, which is roughly one order-of-magnitude thicker than what is found experimentally. The influence of inflow forcing is also discussed in depth. A listing of some of the open questions and future directions concerning jet noise predictions using large-eddy simulation concludes the survey.

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M3 - Conference contribution

AN - SCOPUS:34347263398

SN - 1563478072

SN - 9781563478079

T3 - Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting

SP - 5810

EP - 5845

BT - Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting

T2 - 44th AIAA Aerospace Sciences Meeting 2006

Y2 - 9 January 2006 through 12 January 2006

ER -