K.A. Bütefisch, K. Hartmann

This study is a contribution to the International Vortex Flow Experiment. The aim is to provide experimental flow field data on a delta wing with rounded leading edge for a better understanding of the physical behavior of the flow field which is strongly dominated by the formation, development and decay of vortices. For this purpose complementary to force, pressure, and velocity measurements the flow was visualized by means of the laser light sheet and the oil flow technique. The 420 mm chord model of MBB was tested at a Mach numbcr of Ma = 0.85 and angles of attack of alpha = 10°, 20°, and 25° in the 1 x 1 m^2 Transonic Wind Tunnel TWG of the DFVLR. The Reynolds number based on model chord was Re = 4.5 x 10^6. The development of the primary and sccondary vortical system has been observed, sudden changes of the structure of the flow field have been found, and by means of a digital image processing system quantitative data of the positions of the vortices have been obtained.

6. DGLR-Fach-Symposium, Braunschweig, 1988

Conference Paper

englisch

21,0 x 29,7 cm, 10 Seiten

DGLR-Bericht, 1988, 1988-05, Strömungen mit Ablösung; S.159-168; 1988; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

aerodynamics

Bibliothek

1988