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Ferrofluid thin films for aerofoil lift enhancement and delaying flow separation
dc.contributor.author | Arias Montenegro, Francisco Javier |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Mecànica de Fluids |
dc.date.accessioned | 2020-10-16T13:04:58Z |
dc.date.available | 2021-02-18T01:28:26Z |
dc.date.issued | 2020-08-18 |
dc.identifier.citation | Arias, F.J. Ferrofluid thin films for aerofoil lift enhancement and delaying flow separation. "Aeronautical Journal", December 2020, vol.124 , núm.1282 , p.1865-1878 |
dc.identifier.issn | 00019240 |
dc.identifier.uri | http://hdl.handle.net/2117/330372 |
dc.description.abstract | In this work, consideration is given to a novel concept for aerofoil lift enhancement and delaying flow separation. Here, lift enhancement is attained by preventing the growth of the boundary layer through the elimination of the zero-slip condition between the wing surface and the air stream. The concept would simulate all the effects of a moving wall, leading to the appearance of a slip velocity at the gas–fluid interface, including the injection of momentum into the air boundary layer, but with one exception: here there is no moving wall but instead a ferrofluid thin film pumped parallel and attached to the wall by a magnetic field. Utilising a simplified physical model for the velocity profile of the ferrofluid film and based on ferrohydrodynamic stability considerations, an analytical expression for the interfacial velocity is derived. Finally, from the available experimental data on moving walls, the expected lift and angle-of-attack enhancement are found as well as the weight penalty per unit surface area of the wing is estimated. Additional research and development is required to explore the possibilities of using ferrofluid thin films |
dc.format.extent | 14 p. |
dc.language.iso | eng |
dc.publisher | Cambridge University Press |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Aeronàutica i espai::Aerodinàmica |
dc.subject.lcsh | Aerodynamics |
dc.subject.lcsh | Aerofoils |
dc.subject.other | Flow separation |
dc.subject.other | Boundary layer |
dc.subject.other | Lift enhancement |
dc.subject.other | Aerodynamics |
dc.title | Ferrofluid thin films for aerofoil lift enhancement and delaying flow separation |
dc.type | Article |
dc.subject.lemac | Aerodinàmica |
dc.subject.lemac | Superfícies de sustentació |
dc.identifier.doi | 10.1017/aer.2020.65 |
dc.rights.access | Open Access |
local.identifier.drac | 28773477 |
dc.description.version | Postprint (author's final draft) |
local.citation.author | Arias, F.J. |
local.citation.publicationName | Aeronautical Journal |
local.citation.volume | 124 |
local.citation.number | 1282 |
local.citation.startingPage | 1865 |
local.citation.endingPage | 1878 |
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