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Implicit large eddy simulation of acoustic loading in supersonic turbulent boundary layers

Ritos, Konstantinos and Kokkinakis, Ioannis W. and Drikakis, Dimitris and Spottswood, S. Michael (2017) Implicit large eddy simulation of acoustic loading in supersonic turbulent boundary layers. Physics of Fluids, 29 (4). ISSN 1070-6631

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Abstract

This paper investigates the accuracy of implicit Large Eddy Simulation in the prediction of acoustic phenomena associated with pressure fluctuations within a supersonic turbulent boundary layer. We assess the accuracy of implicit Large Eddy Simulation against Direct Numerical Simulation and experiments for attached turbulent supersonic flow with zero-pressure gradient, and further analyze and discuss the effects of turbulent boundary layer pressure fluctuations on acoustic loading both at the high and low frequency regimes. The results of high-order variants of the simulations show good agreement with theoretical models, experiments, as well as previously published Direct Numerical Simulations.