elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Characteristics of wall pressure fluctuations for a flat plate turbulent boundary layer with pressure gradients

Hu, Nan and Herr, Michaela (2016) Characteristics of wall pressure fluctuations for a flat plate turbulent boundary layer with pressure gradients. 22nd AIAA/CEAS Aeroacoustics Conference, 30.5.-1.6.2016, Lyon, France.

[img] PDF
1MB

Abstract

The wall pressure fluctuations beneath a turbulent boundary layer with zero and non-zero pressure gradients were measured at a flat plate configuration in the Acoustic Windtunnel Braunschweig. The fluctuating pressure was measured by an array of subminiature pressure transducers. In addition, the mean flow velocity profiles within the turbulent boundary layer were obtained using hot wires. Adverse and favorable pressure gradients were realized by placing a rotatable NACA 0012 airfoil with a chord length of 40 cm above the flat plate. The one-point spectra and the two-point correlation properties are analysed. An empirical spectral model for the wall pressure fluctuations beneath an adverse pressure gradient boundary layer is developed based on the measured data. The effects of the pressure gradients on the characteristics of the wall pressure fluctuations are discussed.

Item URL in elib:https://elib.dlr.de/109083/
Document Type:Conference or Workshop Item (Speech)
Title:Characteristics of wall pressure fluctuations for a flat plate turbulent boundary layer with pressure gradients
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hu, NanNan.Hu (at) dlr.deUNSPECIFIED
Herr, MichaelaMichaela.Herr (at) dlr.deUNSPECIFIED
Date:2016
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Aeroacoustics, Wall pressure fluctuations
Event Title:22nd AIAA/CEAS Aeroacoustics Conference
Event Location:Lyon, France
Event Type:international Conference
Event Dates:30.5.-1.6.2016
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
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Hu, Nan
Deposited On:06 Dec 2016 14:55
Last Modified:31 Jul 2019 20:06

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.