On the 3D structure of the flow-field in the vicinity of inclined plate

The motivation of the presented study is supporting new ideas about principle of flight by Hoffman and Johnson, see [1]. The new hypothesis of physical mechanism of flight relies on existence of streamwise vortical structures on the suction side of the airfoil and within its wake. The vortices origi...

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Bibliographic Details
Published in:Journal of physics. Conference series 2018-10, Vol.1101 (1), p.12026
Main Authors: Prochazka, P, Uruba, V, Skala, V
Format: Article
Language:English
Subjects:
Aerodynamics
Airfoils
Angle of attack
Boundary layer stability
Flat plates
Fluid dynamics
Fluid flow
Suction
Three dimensional flow
Uniform flow
Vortices
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Summary:The motivation of the presented study is supporting new ideas about principle of flight by Hoffman and Johnson, see [1]. The new hypothesis of physical mechanism of flight relies on existence of streamwise vortical structures on the suction side of the airfoil and within its wake. The vortices origin is supposed to be the instability of the boundary layer subjected to adverse pressure gradient. The vortices are of highly dynamical nature, changing theirs position, size and other parameters in time very rapidly. For this experiment the simplest airfoil possible was chosen represented by a flat plate in uniform flow and moderate angle of attack. In the suggested paper detailed measurement of the zone of interest will be carried out using stereo PIV method. System of measuring planes perpendicular to the flow will be explored. POD analysis is to be utilized.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1101/1/012026