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http://dx.doi.org/10.18419/opus-13306
Autor(en): | Ullah, Junaid Prachař, Aleš Šmíd, Miroslav Seifert, Avraham Soudakov, Vitaly Lutz, Thorsten Krämer, Ewald |
Titel: | Reynolds number and wind tunnel wall effects on the flow field around a generic UHBR engine high-lift configuration |
Erscheinungsdatum: | 2020 |
Dokumentart: | Zeitschriftenartikel |
Seiten: | 1009-1023 |
Erschienen in: | CEAS aeronautical journal 11 (2020), S. 1009-1023 |
URI: | http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-133254 http://elib.uni-stuttgart.de/handle/11682/13325 http://dx.doi.org/10.18419/opus-13306 |
ISSN: | 1869-5582 1869-5590 |
Zusammenfassung: | RANS simulations of a generic ultra-high bypass ratio engine high-lift configuration were conducted in three different environments. The purpose of this study is to assess small scale tests in an atmospheric closed test section wind tunnel regarding transferability to large scale tests in an open-jet wind tunnel. Special emphasis was placed on the flow field in the separation prone region downstream from the extended slat cut-out. Validation with wind tunnel test data shows an adequate agreement with CFD results. The cross-comparison of the three sets of simulations allowed to identify the effects of the Reynolds number and the wind tunnel walls on the flow field separately. The simulations reveal significant blockage effects and corner flow separation induced by the test section walls. By comparison, the Reynolds number effects are negligible. A decrease of the incidence angle for the small scale model allows to successfully reproduce the flow field of the large scale model despite severe wind tunnel wall effects. |
Enthalten in den Sammlungen: | 06 Fakultät Luft- und Raumfahrttechnik und Geodäsie |
Dateien zu dieser Ressource:
Datei | Beschreibung | Größe | Format | |
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s13272-020-00463-w.pdf | 7,53 MB | Adobe PDF | Öffnen/Anzeigen |
Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons