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Validation of the Flow Topology Around Several Airdrop Cargo Configurations at Static Conditions

Geisbauer, Sven and Bier, Niko and Kirz, Jochen and Roosenboom, Eric (2013) Validation of the Flow Topology Around Several Airdrop Cargo Configurations at Static Conditions. American Institute of Aeronautics and Astronautics. 31st AIAA Applied Aerodynamics Conference, 24.-27. Juni 2013, San Diego, USA.

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Official URL: http://arc.aiaa.org/doi/abs/10.2514/6.2013-3155

Abstract

A numerical study was carried out to assess the interference effects between the wake of a transport aircraft and several generic cargo bodies during the early stage of an airdrop scenario. Based on experimental data and preceding numerical simulations distinct positions of the trajectory being subject to strong interference effects were stati- cally reproduced. The flow field around the bodies was experimentally investigated using stereoscopic Particle Image Velocimetry and compared to steady and unsteady Reynolds- averaged Navier-Stokes (RANS) computations. The latter were carried out using the unstructured DLR TAU code. The primary focus is to assess the suitability, accuracy and the limitations of RANS methods in such challenging flow conditions. Therefore, the influence of several turbulence models was investigated and compared to experimental field velocity data. Although deviations in the wake of the bodies were observed, the qualitative agreement between the steady simulations and experiment was very good. Quantitatively, however, the steady approach leaves room for further improvements. The gap to the experimental data could partially be reduced in applying unsteady RANS methods.

Item URL in elib:https://elib.dlr.de/83443/
Document Type:Conference or Workshop Item (Speech)
Additional Information:DOI: 10.2514/6.2013-3155
Title:Validation of the Flow Topology Around Several Airdrop Cargo Configurations at Static Conditions
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Geisbauer, Svensven.geisbauer (at) dlr.deUNSPECIFIED
Bier, Nikoniko.bier (at) dlr.deUNSPECIFIED
Kirz, JochenUNSPECIFIEDUNSPECIFIED
Roosenboom, Ericeric.roosenboom (at) dlr.deUNSPECIFIED
Date:June 2013
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-17
Publisher:American Institute of Aeronautics and Astronautics
Series Name:Conference Proceedings online
Status:Published
Keywords:CFD, PIV, TAU, 3D, RSM, validation, cargo, airdrop, experiment, interference effects, wake
Event Title:31st AIAA Applied Aerodynamics Conference
Event Location:San Diego, USA
Event Type:international Conference
Event Dates:24.-27. Juni 2013
Organizer:AIAA
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 - Military Technologies
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Geisbauer, Sven
Deposited On:16 Jul 2013 10:39
Last Modified:01 Jan 2020 03:00

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