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

Numerical Study of Wall Pressure Fluctuations for Zero and Non-Zero Pressure Gradient Turbulent Boundary Layers

Hu, Nan and Appel, Christina and Herr, Michaela and Reiche, Nils and Ewert, Roland (2016) Numerical Study of Wall Pressure Fluctuations for Zero and Non-Zero Pressure Gradient Turbulent Boundary Layers. 22nd AIAA/CEAS Aeroacoustics Conference, 30.5.-1.6.2016, Lyon, France.

[img] PDF
942kB

Abstract

Turbulent boundary layers on a flat plate configuration are simulated using synthetic turbulence generated by the Fast Random Particle-Mesh Method. The averaged turbulence statistics needed for the stochastic realization is provided by a Reynolds averaged Navier-Stokes calculation. Wall pressure fluctuations are obtained by calculating a Poisson equation including both the mean-shear turbulence interaction source term and the turbulence-turbulence interaction source term. The Poisson equation is solved by means of Hockney’s method. Wall pressure fluctuations for zero and adverse pressure gradient boundary layers are calculated. The adverse pressure gradient is realized by placing an airfoil above the flat plate. Simulated one-point spectra and two-point statistics are analyzed. The results are compared to the experimental results, which were measured in the Acoustic Windtunnel Braunschweig for the same configurations. Good agreement with the experimental results is obtained.

Item URL in elib:https://elib.dlr.de/109107/
Document Type:Conference or Workshop Item (Speech)
Title:Numerical Study of Wall Pressure Fluctuations for Zero and Non-Zero Pressure Gradient Turbulent Boundary Layers
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hu, NanNan.Hu (at) dlr.deUNSPECIFIED
Appel, ChristinaChristina.Appel (at) dlr.deUNSPECIFIED
Herr, MichaelaMichaela.Herr (at) dlr.deUNSPECIFIED
Reiche, NilsNils.Reiche (at) dlr.deUNSPECIFIED
Ewert, RolandRoland.Ewert (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, Simulation
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, L - Simulation and Validation
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Hu, Nan
Deposited On:06 Dec 2016 15:29
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.