Investigation of the impact of vortex generators on the shock/boundary-layer interaction

  • Comprehensive experimental and numerical parameter studies on the impact of isolated vortex generator pairs and complex vortex generator arrays onto a strong shock-/boundary layer interaction are presented within the context of this thesis. The effects of vortices, especially as they interact with each other are discussed in terms of their impact on the boundary layer development, the shock characteristics and the overall aerodynamic performance of the aerofoil. The presented results have been obtained from wind tunnel experiments with a simple flat plate with superimposed pressure gradient as well as with a more comprehensive model of a supercritical transonic aerofoil. In addition complex numerical parameter studies on a supercritical aerofoil in free stream conditions have been conducted. This work is designed for gaining a better understanding of the fundamental mechanisms of vortex generator/shock/boundary-layer interaction in order to achieve improved flight performance in terms of drag reduction, avoidance or at least postponement of separation onset and shock oscillation as well as lift improvement by application of optimised vortex generator configurations.

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Metadaten
Author:Lars KrenkelORCiDGND
URL / DOI:https://www.osti.gov/etdeweb/biblio/22059657
ISSN:1434-8454
Title Additional (German):Untersuchung des Einflusses von Wirbelgeneratoren auf die Stoss-/Grenzschicht-Wechselwirkung
Document Type:Report
Language:English
Year of first Publication:2012
Release Date:2022/12/10
Tag:42 ENGINEERING; BOUNDARY LAYERS; COMPUTERIZED SIMULATION; FLOW COUNTERS; FLOW MODELS; FLUID MECHANICS; TRANSONIC FLOW; WIND TUNNELS
Andere Schriftenreihe:DLR-Forschungsbericht. DLR-FB-2012-10
Institutes:Fakultät Maschinenbau
Fakultät Maschinenbau / Labor Biofluidmechanik
Publication:Externe Publikationen
research focus:Produktion und Systeme
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG