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Fuselage Excitation During Cruise Flight Conditions: A New CFD Based Pressure Point Spectra Model

Klabes, Alexander and Appel, Christina and Herr, Michaela and Callsen, Sören (2016) Fuselage Excitation During Cruise Flight Conditions: A New CFD Based Pressure Point Spectra Model. InterNoise 2016, 2016-08-31 - 2016-08-24, Hamburg, Deutschland.

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In the last fifty years many semi-empirical models to predict surface pressure fluctuations beneath turbulent boundary layers (TBL) have been developed for a large variety of test conditions. Nowadays, the relevance of the TBL as a source of cabin interior noise is steadily increasing, due to quieter aircraft engines. The accuracy of various publicly available semi-empirical pressure point spectra models has been investigated on several regions of DLR’s Airbus A320, Advanced Technology Research Aircraft (ATRA). A large validation database was used, involving in-flight measurements at different flight levels (FL) and Mach numbers, employing two different sensor types. Even the most suitable modelling approaches are not generally applicable to all relevant positions at the fuselage. Particularly in regions with high turbulence kinetic energy measured auto-spectra cannot be reproduced with sufficient accuracy. This indicates the need for more universally applicable computational fluid dynamics (CFD)-based surface pressure prediction methods. Therefore, a new model, based on CFD data, which is confirmed with flight test data, is introduced in this paper. The CFD data is calculated with DLR’s TAU code, using a new Reynolds stress turbulence model (RSMg).

Item URL in elib:https://elib.dlr.de/106481/
Document Type:Conference or Workshop Item (Speech)
Title:Fuselage Excitation During Cruise Flight Conditions: A New CFD Based Pressure Point Spectra Model
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Herr, MichaelaUNSPECIFIEDhttps://orcid.org/0009-0000-7275-7078UNSPECIFIED
Date:August 2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 3337-3348
Keywords:Turbulent Boundary Layer, Fuselage Excitation, Semi-Empirical Model, Flight Tests, Computational Fluid Dynamics
Event Title:InterNoise 2016
Event Location:Hamburg, Deutschland
Event Type:international Conference
Event Start Date:31 August 2016
Event End Date:24 August 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin (old), L - Simulation and Validation (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Klabes, Alexander
Deposited On:10 Oct 2016 10:18
Last Modified:24 Apr 2024 20:11

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