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LES study on the shape effect of ground obstacles on wake vortex dissipation

Wang, C.H. John and Zhao, Dan and Schlüter, Jörg and Holzäpfel, Frank and Stephan, Anton (2017) LES study on the shape effect of ground obstacles on wake vortex dissipation. Aerospace Science and Technology, 63, pp. 245-258. Elsevier. ISBN 10.1016/j.ast.2016.12.032 ISSN 1270-9638

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Official URL: http://dx.doi.org/10.1016/j.ast.2016.12.032

Abstract

The lingering wake vortex following a landing aircraft has long been a hazard to aviation safety. Previous studies at the German Aerospace Center (DLR) confirmed the effectiveness of applying ground-based obstacles to improve the dissipation of the wake vortex pair by triggering the onset of the vortex bursting by the artificial introduction of shortwave instability. Following the design of the plate line obstacles as proposed by DLR for vortex dissipation, we further investigate the influence of the shape of the ground obstacles on dissipating wake vortex in the present work. The secondary vortex structure, resulting from the interaction between the vortical flow and the obstacle plate, stems from the location of the obstacle and travels outward along the vortex axis, thus spreading instability to the vortex structure along the way. 3D numerical simulations were conducted using Large Eddy Simulation with OpenFOAM solver.

Item URL in elib:https://elib.dlr.de/113794/
Document Type:Article
Title:LES study on the shape effect of ground obstacles on wake vortex dissipation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wang, C.H. JohnCollege of Eng., Nanyang Tech. Univ., SingaporeUNSPECIFIED
Zhao, DanCollege of Eng., Nanyang Tech. Univ., SingaporeUNSPECIFIED
Schlüter, JörgSchool of Eng., Deakin Univ., Geelong, Viktoria, AustraliaUNSPECIFIED
Holzäpfel, FrankDLR, IPAhttps://orcid.org/0000-0003-3182-1832
Stephan, AntonDLR, IPAUNSPECIFIED
Date:2017
Journal or Publication Title:Aerospace Science and Technology
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:63
Page Range:pp. 245-258
Publisher:Elsevier
ISSN:1270-9638
ISBN:10.1016/j.ast.2016.12.032
Status:Published
Keywords:experimental vortex measurement, Wasser Schleppkanal, ground obstacles
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:air traffic management and operations
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Climate, Weather and Environment
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Transport Meteorology
Deposited By: Ziegele, Brigitte
Deposited On:24 Aug 2017 12:11
Last Modified:31 Jul 2019 20:11

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