Zobrazeno 1 - 10 of 69 pro vyhledávání: '"Baldacchino, D."'
1
Vortex Generators for Flow Separation Control: Wind Turbine Applications
Autor: Baldacchino, D.
Vortex generators have become a ubiquitous sight on the modern wind turbine blade. These small, passive devices can increase the energy extraction potential of a rotor, but their subtle footprint disguises the technical difficulties associated with d
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2
Experimental parameter study for passive vortex generators on a 30% thick airfoil
Autor: Baldacchino, D., Ferreira, Carlos, De Tavernier, D.A.M., Timmer, W.A., van Bussel, G.J.W.
Publikováno v: Wind Energy, 21(9)
Passive vane-type vortex generators (VGs) are commonly used on wind turbine blades to mitigate the effects of flow separation. However, significant uncertainty surrounds VG design guidelines. Understanding the influence of VG parameters on airfoil pe
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3
Results of the AVATAR project for the validation of 2D aerodynamic models with experimental data of the DU95W180 airfoil with unsteady flap
Autor: Ferreira, C., Gonzalez, A., Baldacchino, D., Aparicio, M., Gómez, S., Munduate, X., Ramos García, Néstor, Sørensen, Jens Nørkær, Jost, E., Knecht, S., Lutz, T., Chassapogiannis, P., Diakakis, K., Papadakis, G., Voutsinas, S., Prospathopoulos, J., Gillebaart, T., van Zuijlen, A.
Publikováno v: Ferreira, C, Gonzalez, A, Baldacchino, D, Aparicio, M, Gómez, S, Munduate, X, Ramos García, N, Sørensen, J N, Jost, E, Knecht, S, Lutz, T, Chassapogiannis, P, Diakakis, K, Papadakis, G, Voutsinas, S, Prospathopoulos, J, Gillebaart, T & van Zuijlen, A 2016, ' Results of the AVATAR project for the validation of 2D aerodynamic models with experimental data of the DU95W180 airfoil with unsteady flap ', Journal of Physics: Conference Series (Online), vol. 753, 022006 . https://doi.org/10.1088/1742-6596/753/2/022006
The FP7 AdVanced Aerodynamic Tools for lArge Rotors - Avatar project aims to develop and validate advanced aerodynamic models, to be used in integral design codes for the next generation of large scale wind turbines (10-20MW). One of the approaches t
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https://orbit.dtu.dk/en/publications/e8122719-29e7-451c-bbd0-1f2154f7e395
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4
Experimental benchmark and code validation for airfoils equipped with passive vortex generators
Autor: Baldacchino, D., Manolesos, M., Ferreira, Célia Maria Dias, González Salcedo, A., Aparicio, M., Chaviaropoulos, T., Diakakis, K., Florentie, L., Ramos García, Néstor, Papadakis, G., Sørensen, Niels N., Timmer, N., Troldborg, Niels, Voutsinas, S., van Zuijlen, A.
Publikováno v: Baldacchino, D, Manolesos, M, Ferreira, C M D, González Salcedo, A, Aparicio, M, Chaviaropoulos, T, Diakakis, K, Florentie, L, Ramos García, N, Papadakis, G, Sørensen, N N, Timmer, N, Troldborg, N, Voutsinas, S & van Zuijlen, A 2016, ' Experimental benchmark and code validation for airfoils equipped with passive vortex generators ', Journal of Physics: Conference Series (Online), vol. 753, 022002 . https://doi.org/10.1088/1742-6596/753/2/022002
Experimental results and complimentary computations for airfoils with vortex generators are compared in this paper, as part of an effort within the AVATAR project to develop tools for wind turbine blade control devices. Measurements from two airfoils
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https://orbit.dtu.dk/en/publications/79eebaa2-828f-4a09-a46a-606261c8abcb
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5
CFD code comparison for 2D airfoil flows
Autor: Sørensen, Niels N., Méndez, B., Muñoz, A., Sieros, G., Jost, E., Lutz, T., Papadakis, G., Voutsinas, S., Barakos, G. N., Colonia, S., Baldacchino, D., Baptista, C., Ferreira, Célia Maria Dias
Publikováno v: Sørensen, N N, Méndez, B, Muñoz, A, Sieros, G, Jost, E, Lutz, T, Papadakis, G, Voutsinas, S, Barakos, G N, Colonia, S, Baldacchino, D, Baptista, C & Ferreira, C M D 2016, ' CFD code comparison for 2D airfoil flows ', Journal of Physics: Conference Series (Online), vol. 753, 082019 . https://doi.org/10.1088/1742-6596/753/8/082019
The current paper presents the effort, in the EU AVATAR project, to establish the necessary requirements to obtain consistent lift over drag ratios among seven CFD codes. The flow around a 2D airfoil case is studied, for both transitional and fully t
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https://orbit.dtu.dk/en/publications/41034127-9e0a-4d05-84e1-d116e942d223
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6
Verifying the Blade Element Momentum Method in unsteady, radially varied, axisymmetric loading using a vortex ring model
Autor: Yu, W., Ferreira, Carlos, van Kuik, G.A.M., Baldacchino, D.
Publikováno v: Wind Energy
Although the Blade Element Momentum method has been derived for the steady conditions, it is used for unsteady conditions by using corrections of engineering dynamic inflow models. Its applicability in these cases is not yet fully verified. In this p
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7
An integral boundary layer method for modelling the effects of vortex generators
Autor: Baldacchino, D., Ragni, D., Simao Ferreira, C.J., Van Bussel, G.J.W.
Publikováno v: 11th EAWE PhD Seminar on Wind Energy in Europe, Stuttgart, Germany, 23-25 September 2015
In this work, the measured modulated integral boundary layer (IBL) characteristics of low-profile vortex generators (VGs) are used to validate new developments in a viscousinviscid interaction code which is modified to incorporate the effect of the p
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8
Wind turbine wake stability investigations using a vortex ring modelling approach
Autor: Baldacchino, D., Van Bussel, G.J.W.
Publikováno v: Journal of Physics: Conference Series, 555 (2014), 012111
In the present study, a simple inviscid vortex ring (VR) modelling approach is used to represent the developing rotor wake. This allows a straightforward investigation and comparison of the impact of uniform, yawed and sheared flow conditions on the
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