Výsledky vyhledávání - "Joseba Murua"

CFD Simulation of Blade Flows With High Amplitude Pitching

Autor: Joseba Murua, Ramesh Kumar, John W. Chew, Dario Amirante, Nicholas J. Hills

Large and flexible wind turbine blades may be susceptible to severe blade deformations coupled with dynamic stall. To advance prediction capability for this problem a general deforming mesh computational fluid dynamics (CFD) method has been developed

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5aac61079e970c9be913c5182e32966f
https://surrey.eprints-hosting.org/813730/

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T-tail flutter: Potential-flow modelling, experimental validation and flight tests

Autor: Joseba Murua, Hector Climent, Louw H. van Zyl, Rafael Palacios, Pablo Martínez

Publikováno v: Progress in Aerospace Sciences. 71:54-84

© 2014 Elsevier Ltd.Flutter of T-tail configurations is caused by the aeroelastic coupling between the vertical fin and the horizontal stabiliser. The latter is mounted on the fin instead of the fuselage, and hence the arrangement presents distinct

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5c7cbb2f4570c46365c3a5f457d9b015
https://doi.org/10.1016/j.paerosci.2014.07.002

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Structural and Aerodynamic Models in Nonlinear Flight Dynamics of Very Flexible Aircraft

Autor: Robert G. Cook, Rafael Palacios, Joseba Murua

Publikováno v: AIAA Journal. 48:2648-2659

An evaluation of computational models is carried out for flight dynamics simulations on low-speed aircraft with very-flexible high-aspect ratio wings. Structural dynamic models include displacement-based, strain-based, and intrinsic (first-order) geo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7acb5576f280e3fa952af92b7bbc38d
https://doi.org/10.2514/1.j050513

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Limit-cycle oscillations in unsteady flows dominated by intermittent leading-edge vortex shedding

Autor: Joseba Murua, Kiran Ramesh, Ashok Gopalarathnam

High-frequency limit-cycle oscillations of an airfoil at low Reynolds number are studied numerically. This regime is characterized by large apparent-mass effects and intermittent shedding of leading-edge vortices. Under these conditions, leading-edge

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bfa022879514e3ee3c7943ac95236d4
https://eprints.gla.ac.uk/102781/1/102781.pdf

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Unsteady and Post-Stall Aerodynamic Modeling for Flight Dynamics Simulation

Autor: Ashok Gopalarathnam, Ryan C. Paul, Joseba Murua

Publikováno v: AIAA Atmospheric Flight Mechanics Conference.

This paper presents a methodology for flight dynamics simulation inclu ding three-dimensional unsteady and post-stall aerodynamics. This is accomplished by integrating a decambering viscous correction into a linearized unsteady vortex lattice method.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3165f3d24074f8d733ca18bc28f6faeb
https://doi.org/10.2514/6.2014-0729

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Consistent Structural Linearization in Flexible Aircraft Dynamics with Large Rigid-Body Motion

Autor: Rafael Palacios, Joseba Murua, Henrik Hesse

Publikováno v: Scopus-Elsevier
Honolulu, Hawaii, USA
53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

This paper investigates the linearization, using perturbation methods, of the structural deformations in the nonlinear flight dynamic response of aircraft with slender, flexible wings. The starting point is the coupling of a displacement-based, geome

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbf22915004c454926b09804ece1ad3d
http://hdl.handle.net/10044/1/11697

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Applications of the unsteady vortex-lattice method in aircraft aeroelasticity and flight dynamics

Autor: Jmr Graham, Rafael Palacios, Joseba Murua

The Unsteady Vortex-Lattice Method provides a medium-fidelity tool for the prediction of non-stationary aerodynamic loads in low-speed, but high-Reynolds-number, attached flow conditions. Despite a proven track record in applications where free-wake

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b275bef60b9b063158dc2aa5079804b8
http://hdl.handle.net/10044/1/13765

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Assessment of Wake-Tail Interference Effects on the Dynamics of Flexible Aircraft

Autor: Rafael Palacios, Joseba Murua, J. Michael R. Graham

This work investigates the effect of aerodynamic interference in the coupled nonlinear aeroelasticity and flight mechanics of flexible lightweight aircraft at low speeds. For that purpose, a geometrically exact composite-beam formulation is used to m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ab40cbb0daf252b83bfa7af8d7783aa
https://surrey.eprints-hosting.org/795436/

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Stability and Open-Loop Dynamics of Very Flexible Aircraft Including Free-Wake Effects

Autor: Henrik Hesse, Jmr Graham, Rafael Palacios, Joseba Murua

Publikováno v: Denver, Colorado, USA
52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference

The paper investigates the coupled nonlinear aeroelasticity and flight mechanics of very flexible lightweight aircraft. A geometrically-exact composite beam formulation is used to model the nonlinear flexible-body dynamics, including rigid-body motio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3dbe9bb0857b4001f879aca73cacba0f
https://doi.org/10.2514/6.2011-1915

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