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Improved analytical prediction of Boundary-Layer induced rotor noise using circumferential modes

Staggat, Martin and Moreau, Antoine and Guerin, Sebastien (2018) Improved analytical prediction of Boundary-Layer induced rotor noise using circumferential modes. FAN 2018, 18.-20. Apr. 2018, Darmstadt, Germany.

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Abstract

An improved theory addressing the interaction noise of a turbulent boundary layer with an open rotor is presented. Compared to a prior version, central components, such as the prediction of the turbulent velocity spectra, the correlation lengths and the stream tube contraction, are modified or included to better address the strongly anisotropic character of the boundary layer turbulence. The predictions with the improved theory shows a better agreement with some benchmark data with regard to the amplitude and spectral shape of the sound pressure signals.

Item URL in elib:https://elib.dlr.de/120869/
Document Type:Conference or Workshop Item (Speech)
Title:Improved analytical prediction of Boundary-Layer induced rotor noise using circumferential modes
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Staggat, Martinmartin.staggat (at) dlr.deUNSPECIFIED
Moreau, Antoineantoine.moreau (at) dlr.deUNSPECIFIED
Guerin, SebastienSebastien.Guerin (at) dlr.deUNSPECIFIED
Date:18 April 2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:BLI, Boundary Layer Ingestion, Open Rotors, Interaction Noise
Event Title:FAN 2018
Event Location:Darmstadt, Germany
Event Type:international Conference
Event Dates:18.-20. Apr. 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Fan and Compressor Technologies
Location: Berlin-Charlottenburg
Institutes and Institutions:Institute of Propulsion Technology > Engine Acoustic
Deposited By: Staggat, Martin
Deposited On:09 Jul 2018 11:16
Last Modified:09 Jul 2018 11:16

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