Investigation of the Influence of Distributed Propulsion on the Structure of a Separated Flow around a Trapezoidal Model of a Flying Wing
A. M. Pavlenko, B. Yu. Zanin, E. A. Melnik, N. S. Alpatskii
Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: flying wing, laminar-turbulent transition, separated flows, flow control, stall, impellers, distributed propulsion, local separation bubble
Abstract
The paper presents the results of an experimental study of the influence of distributed engines mounted downstream of the trailing edge on the structure of a separated flow around a trapezoidal model of a flying wing in a subsonic wind tunnel. Visualization patterns of the near-wall flow on the leeward side of the model are obtained in the modes of blocked engines and for the rotational speed of the impeller of 32800 rpm in the range of angles of attack of the wing α = 5÷20°. The studies also take into account the location of distributed propulsion relative to the level of the trailing edge, where the axis of rotation of the engine impeller coincided with the continuation of the wing chord line or is higher than that. The possibility of controlling a separated flow by using sources of stationary disturbances in the form of cones and ribs locally mounted at singular points on the wing surface is studied.
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