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Creation and Conversion of Wing-Tip Vortices

Rainer Michael Buffo (Autor)

Buch | Softcover

167 Seiten

2017
Shaker (Verlag)
978-3-8440-5294-7 (ISBN)

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This thesis offers analyses of the wing-tip dependent vortex roll-up process using stereoscopic PIV water-tunnel experiments. The investigations were executed at the Institute of Aerospace Systems (Institut für Luft- und Raumfahrtsysteme) at RWTH Aachen University, Aachen, Germany, between 2009 and 2015. Special attention is given to the variable axial velocity component at the center of the vortex and its sensitivity towards the wing-tip shape, wing-loading, and Reynolds number. In distinct cases an instable process can be observed during the roll-up process, which is triggered by a time-independent spiral-like nutation of the vortex axis, followed by core widening and axial velocity reduction. The swirl characteristics of different phases of vortex creation, dynamic unstable vortex conversion, and natural as well as stimulated vortex ageing are unified in a vortex life cycle envelope, intending to offer further understanding of vortex behavior.

Erscheinungsdatum	16.06.2017
Reihe/Serie	Berichte aus der Luft- und Raumfahrttechnik
Verlagsort	Aachen
Sprache	englisch
Maße	148 x 210 mm
Gewicht	320 g
Einbandart	geklebt
Themenwelt	Technik ► Luft- / Raumfahrttechnik
Schlagworte	axial velocity • Vortex roll-up • wing-tip shape
ISBN-10	3-8440-5294-1 / 3844052941
ISBN-13	978-3-8440-5294-7 / 9783844052947
Zustand	Neuware