iPhoneAlle anzeigen
iPhone 11iPhone 11 ProiPhone 11 Pro MaxiPhone 12iPhone 12 ProiPhone 12 Pro MaxiPhone 12 miniiPhone 13iPhone 13 ProiPhone 13 Pro MaxiPhone 13 miniiPhone 14iPhone 14 PlusiPhone 14 ProiPhone 14 Pro MaxiPhone 15iPhone 15 PlusiPhone 15 ProiPhone 15 Pro MaxiPhone 16iPhone 16 PlusiPhone 16 ProiPhone 16 Pro MaxiPhone 16eiPhone 8iPhone 8 PlusiPhone SE 2020iPhone SE 2022iPhone XiPhone XRiPhone XSiPhone XS Max
Galaxy A-SerieAlle anzeigen
Galaxy A12Galaxy A13Galaxy A13 5GGalaxy A14Galaxy A15Galaxy A16Galaxy A17 5GGalaxy A20eGalaxy A21Galaxy A22Galaxy A23Galaxy A24Galaxy A25Galaxy A26 5GGalaxy A32Galaxy A33Galaxy A34Galaxy A35Galaxy A36 5GGalaxy A40Galaxy A41Galaxy A42Galaxy A50Galaxy A51Galaxy A52Galaxy A53Galaxy A54Galaxy A55Galaxy A56 5GGalaxy A70Galaxy A71Galaxy A72
Redmi SeriesAlle anzeigen
Redmi 10Redmi 13CRedmi 15 5GRedmi Note 10Redmi Note 10 ProRedmi Note 11Redmi Note 11 ProRedmi Note 11 Pro Plus 5GRedmi Note 11sRedmi Note 12Redmi Note 12 5GRedmi Note 12 ProRedmi Note 12 Pro 5GRedmi Note 12 Pro PlusRedmi Note 13Redmi Note 13 5GRedmi Note 13 ProRedmi Note 13 Pro PlusRedmi Note 14Redmi Note 14 Pro PlusRedmi Note 8Redmi Note 8 ProRedmi Note 9Redmi Note 9 Pro
- Startseite
Bücher Wissen & Bildung Naturwissenschaft, Medizin, Informatik, Technik Technik Luft- und Raumfahrttechnik Experimentelle Untersuchung der prägenden Wirbelsysteme im Nachlauf stumpfer Körper und deren aktiver Beeinflussung
Derzeit nicht verfügbar
Handgeprüfte Gebrauchtware
Bis zu 50 % günstiger als neu
Der Umwelt zuliebe
Experimentelle Untersuchung der prägenden Wirbelsysteme im Nachlauf stumpfer Körper und deren aktiver Beeinflussung
Daniel Krentel (Broschiert, Deutsch)
★★★★★
☆☆☆☆☆ Keine Bewertungen vorhanden
Optischer Zustand
Beschreibung
The flow around bluff bodies is dominated by different vortex structures, which are responsible for extensive momentum loss, low static base pressure and result in comparatively high pressure drag. In two-dimensional and quasi-two-dimensional bluff body flows, the main vortex mechanism is the periodic-alternating shedding of large-scale, transversal vortices, composing a stable vortex street… downstream. Flow fields around three-dimensional bluff bodies are characterized mostly by stable, large-scale longitudinal vortex systems.
Passive and active flow control approaches were applied to a blunt NACA0012 wing model in order to gain an insight into the mode of action of these flow control strategies using time-resolved PIV and base pressure measurements. Both the variation of the geometry of the model rear end, as well as the tangentially, periodically-blowing compressed air jets located at the base edges, result in a considerable attenuation of the regular vortex shedding process, which is connected with a drag reduction of up to 37 % and a fundamental change of the dominating vortex mechanism. An actuation using a frequency out of the natural vortex shedding wave band yields a significant amplification of the large-scale, periodic-alternating vortex shedding and a distinct drag rise.
Three-dimensional bluff body flows were investigated experimentally in a stereo-PIV configuration using an adapted AHMED body half model with a slant angle of f = 25 degree angle. This bluff body flow is characterized by a steady longitudinal vortex, which is formed at the lateral edge of the model slant out of the shear layer. This vortex is continuously fed by the lateral shear layer and leads to a very low static pressure in the effective range compared to the regular surrounding recompression on the model slant. The active flow control system applied to the AHMED body half model, using two continuously-blowing compressed air jets with a sufficient momentum transfer, results in a cutoff of the vortex and the feeding, lateral shear layer and causes a significant displacement of the vortex in upward direction, away from the slant. This leads to a reduced influence of the longitudinal vortex on the static pressure field on the rear slant and an almost two-dimensional development of the recompression regarding its spanwise characteristics. Dieses Produkt haben wir gerade leider nicht auf Lager.
Handgeprüfte Gebrauchtware
Bis zu 50 % günstiger als neu
Der Umwelt zuliebe
Technische Daten
Erscheinungsdatum
01.10.2015
Sprache
Deutsch
EAN
9783863876319
Herausgeber
Mensch & Buch
Sonderedition
Nein
Autor
Daniel Krentel
Seitenanzahl
144
Auflage
1
Einbandart
Broschiert
Einbandart Details
Klebebindung
-.-
★★★★★
☆☆☆☆☆ Leider noch keine Bewertungen
Leider noch keine Bewertungen
Sicher bei rebuy kaufen
Schreib die erste Bewertung für dieses Produkt!
Wenn du eine Bewertung für dieses Produkt schreibst, hilfst du allen Kund:innen, die noch überlegen, ob sie das Produkt kaufen wollen. Vielen Dank, dass du mitmachst!
Sicher bei rebuy kaufen