Unsteady Lifting Line Theory Using theWagner Function for the Aerodynamic and Aeroelastic Modeling of 3D Wings

Boutet, Johan; Dimitriadis, Grigorios

doi:10.3390/aerospace5030092

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Unsteady Lifting Line Theory Using theWagner Function for the Aerodynamic and Aeroelastic Modeling of 3D Wings

Boutet, Johan; Dimitriadis, Grigorios

2018 • In Aerospace, 5 (3), p. 92

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https://hdl.handle.net/2268/227423

DOI
10.3390/aerospace5030092

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Keywords :

Unsteady aerodynamics; Finite wings; Wagner theory; Lifting line theory; Aeroelasticity

Abstract :

[en] A method is presented to model the incompressible, attached, unsteady lift and pitching moment acting on a thin three-dimensional wing in the time domain. The model is based on the combination of Wagner theory and lifting line theory through the unsteady Kutta–Joukowski theorem. The results are a set of closed-form linear ordinary differential equations that can be solved analytically or using a Runge–Kutta–Fehlberg algorithm. The method is validated against numerical predictions from an unsteady vortex lattice method for rectangular and tapered wings undergoing step or oscillatory changes in plunge or pitch. Further validation is demonstrated on an aeroelastic test case of a rigid rectangular finite wing with pitch and plunge degrees of freedom.

Disciplines :

Aerospace & aeronautics engineering

Author, co-author :

Boutet, Johan ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale

Dimitriadis, Grigorios ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Interactions Fluide-Structure - Aérodynamique expérimentale

Language :

English

Title :

Unsteady Lifting Line Theory Using theWagner Function for the Aerodynamic and Aeroelastic Modeling of 3D Wings

Publication date :

2018

Journal title :

Aerospace

eISSN :

2226-4310

Publisher :

MDPI, Basel, Switzerland

Special issue title :

Special Issue on Aeroelasticity

Volume :

Issue :

Pages :

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 30 August 2018

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