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EXPERIMENTAL AND NUMERICAL ANALYSIS OF THE TRANSONIC VORTICAL FLOW OVER A GENERIC LAMBDA WING CONFIGURATION (Chapter 6)

Zimper, Dirk and Rein, Martin (2016) EXPERIMENTAL AND NUMERICAL ANALYSIS OF THE TRANSONIC VORTICAL FLOW OVER A GENERIC LAMBDA WING CONFIGURATION (Chapter 6). Other. STO-TR-AVT-201, 22 S. NATO Science & Technology Organization.

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Official URL: https://www.sto.nato.int/publications/STO%20Technical%20Reports/Forms/DispForm.aspx?ID=3921&RootFolder=STO%20Technical%20Reports%2FSTO%2DTR%2DAVT%2D201&IsDlg=1

Abstract

In this chapter, an analysis of the flow physics at transonic speed is presented for the generic UCAV configuration SACCON. This configuration is characterized by a leading edge whose geometry varies in span-wise direction. Several experimental and numerical investigations have already been conducted within the subsonic speed range with a wind tunnel model that has been downscaled by 1:8 with respect to the original configuration. However, most of the time real configurations operate at transonic velocities. Therefore, it is important to analyze and understand also flow phenomena and the aerodynamic characteristics at transonic speeds. In this chapter, experimental surface oil flow images and Schlieren images are used to compare the experimentally determined flow topology with topologies obtained numerically using different turbulence models. In the first part of the chapter, numerical results are validated based on experimental results. Thereafter, a detailed interpretation of the flow is presented. Based on numerical results the flow physics at low and high transonic speeds is illustrated for medium and high angles of attack. A result of the particular SACCON design is a vortex dominated flowfield with shock vortex interaction. The subsequent analysis contributes to an understanding of the flow physics of the non-slender flying wing configuration SACCON.

Item URL in elib:https://elib.dlr.de/111026/
Document Type:Monograph (Other)
Title:EXPERIMENTAL AND NUMERICAL ANALYSIS OF THE TRANSONIC VORTICAL FLOW OVER A GENERIC LAMBDA WING CONFIGURATION (Chapter 6)
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Zimper, DirkDirk.Zimper (at) dlr.dehttps://orcid.org/0000-0001-5780-5545
Rein, Martinmartin.rein (at) dlr.deUNSPECIFIED
Date:11 November 2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.14339/STO-TR-AVT-201
Number of Pages:22
Editors:
EditorsEmail
UNSPECIFIEDNATO Science & Technology Organization
Publisher:NATO Science & Technology Organization
Series Name:Technical Report
ISBN:978-92-837-2079-9
Status:Published
Keywords:UCAV; UAV; Air Vehicle; Aerodynamik, Flugdynamik, experimental investigations, Windkanaluntersuchungen, Schlieren, CFD, Validation, Validierung
Institution:NATO Science & Technology Organization
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 - Flight Physics, L - Military Technologies, L - Concepts and Integration
Location: Köln-Porz
Institutes and Institutions:Program Coordination Defence & Security Research
Institute for Aerodynamics and Flow Technology > High Speed Configurations, GO
Deposited By: Zimper, Dr.-Ing. Dirk
Deposited On:21 Feb 2017 10:54
Last Modified:20 Nov 2018 17:21

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