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New Theory of Flight
KTH, School of Computer Science and Communication (CSC), High Performance Computing and Visualization (HPCViz).ORCID iD: 0000-0003-4256-0463
KTH, School of Computer Science and Communication (CSC), High Performance Computing and Visualization (HPCViz).ORCID iD: 0000-0002-1695-8809
KTH, School of Computer Science and Communication (CSC), High Performance Computing and Visualization (HPCViz).
2015 (English)In: Journal of Mathematical Fluid Mechanics, ISSN 1422-6928, E-ISSN 1422-6952, Vol. 18, no 2, 219-241 p.Article in journal (Other academic) Published
Abstract [en]

We present a new mathematical theory explaining the fluid mechanics of sub-sonic flight, which is fundamentally different from the existing boundary layer-circulation theory by Prandtl-Kutta-Zhukovsky formed 100 year ago. The new the-ory is based on our new resolution of d’Alembert’s paradox showing that slightlyviscous bluff body flow can be viewed as zero-drag/lift potential flow modified by3d rotational slip separation arising from a specific separation instability of po-tential flow, into turbulent flow with nonzero drag/lift. For a wing this separationmechanism maintains the large lift of potential flow generated at the leading edgeat the price of small drag, resulting in a lift to drag quotient of size15

Place, publisher, year, edition, pages
Springer, 2015. Vol. 18, no 2, 219-241 p.
Keyword [en]
Flight; lift theory, d'Alembert's paradox
National Category
Computational Mathematics Fluid Mechanics and Acoustics Aerospace Engineering
Identifiers
URN: urn:nbn:se:kth:diva-170368DOI: 10.1007/s00021-015-0220-yISI: 000376461600002Scopus ID: 2-s2.0-84971621881OAI: oai:DiVA.org:kth-170368DiVA: diva2:828033
Funder
EU, European Research CouncilSwedish Research CouncilSwedish Foundation for Strategic Research
Note

QC 20160620

Available from: 2015-06-29 Created: 2015-06-29 Last updated: 2017-12-04Bibliographically approved

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Hoffman, Johan

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