Large eddy simulations of isolated and installed jet noise using the high-order discontinuous Galerkin method

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dc.contributor.authorLindblad, Daniel
dc.contributor.authorSherwin, Spencer J.
dc.contributor.authorCantwell, Chris
dc.contributor.authorLawrence, Jack
dc.contributor.authorProenca, Anderson
dc.contributor.authorMoragues Ginard, Margarida
dc.date.accessioned2023-02-16T19:26:04Z
dc.date.available2023-02-16T19:26:04Z
dc.date.issued2023-01-19
dc.description.abstractA recently developed computational framework for jet noise is used to compute the noise generated by an isolated and installed jet. The framework consists of two parts. In the first part, the spectral/hp element framework Nektar++ is used to compute the near-field flow. Nektar++ solves the unfiltered Navier-Stokes equations on unstructured grids using the high-order discontinuous Galerkin method. The discrete equations are integrated in time using an implicit scheme based on the matrix-free Newton-GMRES method. In the second part, the Antares library is used to compute the far-field noise. Antares solves the Ffowcs Williams - Hawkings equation for a permeable integration surface in the time domain using a source-time dominant algorithm. The simulations are validated against experimental data obtained in the Doak Laboratory Flight Jet Rig, located at the University of Southampton. For the isolated jet, good agreement is achieved, both in terms of the flow statistics and the far-field noise. The discrepancies observed for the isolated jet are believed to be caused by an under-resolved boundary layer in the simulations. For the installed jet, the flow statistics are also well predicted. In the far-field, very good agreement is achieved for downstream observers. For upstream observers, some discrepancies are observed for very high and very low frequencies.en_UK
dc.identifier.citationLindblad D, Sherwin SJ, Cantwell C, et al., (2023) Large eddy simulations of isolated and installed jet noise using the high-order discontinuous Galerkin method. In: AIAA SciTech Forum 2023, 23-27 January 2023, National Harbor, Maryland, USA. Paper number AIAA 2023-1546en_UK
dc.identifier.urihttps://doi.org/10.2514/6.2023-1546
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/19210
dc.language.isoenen_UK
dc.publisherAIAAen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.titleLarge eddy simulations of isolated and installed jet noise using the high-order discontinuous Galerkin methoden_UK
dc.typeConference paperen_UK

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