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Description of Flows at High Angles of Attack

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High Angle of Attack Aerodynamics

Abstract

The distinguishing features of flows at high angles of attack are caused by the generation of free shear layers at sharp leading edges, by separation of the viscous layers from the surfaces of wings and bodies and by the flow in the wakes of the wings and bodies. These types of flow structures, which are in general the result of three-dimensional separation, induce velocity fields which result from the strong interactions between the generated vortical flows, usually including concentrated vortex cores, and the outer flow governed by the configuration’s geometry. This complicated flow field is inherently three-dimensional in its structure. The vortical flow is generated either by the separated viscous shear layers at the sharp leading and side edges (in addition to the “classical” separation at the trailing edge as expressed by the Kutta condition), or by the three-dimensional boundary layer separation from the surfaces of the wings and bodies. As can be anticipated, many unexpected flow structures may occur in these complicated flow fields. Therefore, it is necessary to study and classify the various elements of flow structures which can occur over the various aerodynamic configurations at increasing angles of attack.

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Authors and Affiliations

  1. Department of Aerospace Engineering, Technion-Israel Institute of Technology, Haifa, 32000, Israel

    Josef Rom

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© 1992 Springer-Verlag New York, Inc.

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Rom, J. (1992). Description of Flows at High Angles of Attack. In: High Angle of Attack Aerodynamics. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-2824-0_2

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  • DOI: https://doi.org/10.1007/978-1-4612-2824-0_2

  • Publisher Name: Springer, New York, NY

  • Print ISBN: 978-1-4612-7686-9

  • Online ISBN: 978-1-4612-2824-0

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