Review
Version 2
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An Explanation and Understanding of Aerodynamic Lift by Triple Deck Theory
Version 1
: Received: 19 May 2021 / Approved: 21 May 2021 / Online: 21 May 2021 (07:42:58 CEST)
Version 2 : Received: 2 November 2021 / Approved: 9 November 2021 / Online: 9 November 2021 (14:52:31 CET)
Version 2 : Received: 2 November 2021 / Approved: 9 November 2021 / Online: 9 November 2021 (14:52:31 CET)
How to cite: Schaffarczyk, A. An Explanation and Understanding of Aerodynamic Lift by Triple Deck Theory. Preprints 2021, 2021050496. https://doi.org/10.20944/preprints202105.0496.v2 Schaffarczyk, A. An Explanation and Understanding of Aerodynamic Lift by Triple Deck Theory. Preprints 2021, 2021050496. https://doi.org/10.20944/preprints202105.0496.v2
Abstract
An explanation of aerodynamic lift still is under controversial discussion as can be seen, for example, in a recent published article in Scientific American [1]. In contrast to an approach via integral conservation laws we here review an approach via the classical Kutta-Condition and its relation to boundary layer theory. Thereby we summarize known results for viscous correction to the lift coefficient for thin aerodynamic profiles and try to remember the work on triple-deck or higher order Boundary Layer theory, its connection to interactive boundary layer theory, viscous/inviscid coupling as implemented to well-known engineering code Xfoil. Finally we compare its findings to simple 2D numerical solution of full Navier Stokes equations (CFD)models. As a conclusion, a clearer definition of terms like understanding and explanation applied to the phenomenon of aerodynamic lift will be given.
Keywords
Aerodynamic Lift; Boundary Layer Theory; Triple Deck Theory
Subject
Engineering, Mechanical Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Commenter: Alois Peter Schaffarczyk
Commenter's Conflict of Interests: Author