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2021 | OriginalPaper | Chapter

Investigation of Lighthill-Source Components in a Planar Jet-Wing-Flap Configuration

Authors : Daniel Schütz, Holger Foysi

Published in: New Results in Numerical and Experimental Fluid Mechanics XIII

Publisher: Springer International Publishing

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Abstract

A round jet with \(Re=3600\) and \(M=0.9\) as well as two planar nozzle-wing flap configurations were simulated by using LES. An evaluation was proposed to predict the effect of the instantaneous Lighthill sources, S, their linear components, \(S^{\mathrm {l}}\), and non-linear components, \(S^{\mathrm {n}}\). The simulations indicate that conclusions can be made regarding the directional characteristic of the emitted sound field. These findings were used in investigations of a nozzle-wing-flap configuration. The wing-nozzle configuration showed increased values of the mean Lighthill source terms on the bottom of the wing and flap, contrary to the case of an isolated wing.

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Title: Investigation of Lighthill-Source Components in a Planar Jet-Wing-Flap Configuration
Authors: Daniel Schütz
Holger Foysi
Publisher: Springer International Publishing
Book: New Results in Numerical and Experimental Fluid Mechanics XIII
Print ISBN: 978-3-030-79560-3

Electronic ISBN: 978-3-030-79561-0

Copyright Year: 2021
DOI: https://doi.org/10.1007/978-3-030-79561-0_72

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