Preliminary design and optimization of a 20MW reference wind turbine

Sartori, L.; Bellini, Fabio; Croce, Alessandro; Bottasso, C.L.

doi:10.1088/1742-6596/1037/4/042003

Cited by 25 publications

(16 citation statements)

References 5 publications

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“…After employing the chain rule on δw ie we obtain δw ie = ∂w ie ∂d g,spin δd g,spin = ∂w ie ∂d e,spin ∂d e,spin ∂d g,spin δd g,spin , (C. 19) in which we recognise that ∂d e,spin /∂d g,spin corresponds to a change of coordinate between the global system and local Finally, the evaluation of δw re1 , slightly more complicated, can be found in [32] and results in δw re1 = −r 2 δ r 1 × q ||r 1 and re-writing in matrix format for the different element sizes, we can summarise the expression for [G] as in Table 5.…”

Section: C4 Nodal Rotation and Spinmentioning

confidence: 99%

“…The ability of numerical models to accurately predict the flexibility of aerospace structures has therefore become central to further improve aeroelastic performance, e.g. aeroelastic tailoring [1][2][3]. Furthermore, considering the reliance on computer software and the critical choices that must be made during early design phases, the development of accurate, yet rapid, structural analysis methods is of paramount importance for aerospace applications [4].…”

Section: Introductionmentioning

confidence: 99%

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Corotational Finite Element Formulation for Static Nonlinear Analyses with Enriched Beam Elements

et al. 2020

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The increasing reliance of aerospace structures on numerical analyses encourages the development of accurate, yet computationally efficient, models. Finite element (FE) beam models have, in particular, become widely-used approximations during preliminary design stages and to investigate novel concepts, e.g. aeroelastic tailoring. Over the last 50 years, developments in hp-FE methods based on elements of variable size (h) and polynomial degree (p) have helped reduce the computational cost of numerical analyses. Concurrently, many structures, including aircraft wings and wind turbine blades, have gradually increased in length, slenderness, and complexity. As a result, modern blades and wings regularly operate beyond the range of linear deformation, requiring non-linear analyses for which hp-FE methods are often not readily applicable. The aim of this paper is, therefore, to derive a co-rotational finite element formulation for enriched 3-, 4-and 5-noded beam elements, suitable for non-linear hp-FE refinement. To this end, we derive the mathematical formulation to incorporate enriched elements within the co-rotational FE beam framework. The proposed formulation is then validated against multiple non-linear benchmark problems and an experimental case study.

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Section: C4 Nodal Rotation and Spinmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Corotational Finite Element Formulation for Static Nonlinear Analyses with Enriched Beam Elements

et al. 2020

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“…From a historical perspective, as Sartori shows in details [61], the rotor design started from a reference wind turbine obtained from the INNWIND.EU 10 MW. At first, classical scaling laws have been applied to upscale the reference 10 MW turbine to 20 MW.…”

Section: Design Of a 20 Mw Wind Turbinementioning

confidence: 99%

“…The values considered here, selected from previous analyses performed on other blades, are 4, 6, and 8°. The effects of the BTC are mainly felt on the fatigue loads of wind turbine subcomponents (as shown in [61]) and on the actuator duty cycle, so that without any further action (i.e., stretching of the blade, redesign of the tower/ hub systems, etc. ), the COE is almost unchanged, as one can see in Figure 5.…”

Section: Design Of a 20 Mw Wind Turbinementioning

confidence: 99%

A Research Framework for the Multidisciplinary Design and Optimization of Wind Turbines

Sartori¹,

Cacciola²,

Croce³

et al. 2020

Design Optimization of Wind Energy Conversion Systems With Applications

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The design of very large wind turbines is a complex task which requires the development of dedicated tools and techniques. In this chapter, we present a system-level design procedure based on the combination of multi-body numerical models of the turbine and a multilevel optimization scheme. The overall design aims at the minimization of the cost of energy (COE) through the optimization of all the characteristics of the turbine, and the procedure automatically manages all the simulations required to compute relevant loads and displacements. This unique setup allows the designer to conduct trade-off studies in a highly realistic virtual environment and is an ideal test bench for advanced research studies in which it is important to assess the economic impact of specific design choices. Examples of such studies include the impact of stall-induced vibrations on fatigue, the development of active/passive control laws for large rotors, and the complete definition of 10-20 MW reference turbines.

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“…C. From Global to Local Displacements -Step (1) In this section, local deformations are recovered from the global displacement vector.…”

Section: Fig 3 3-noded Beam Element Reference Framesmentioning

confidence: 99%

Authors' response to reviewers' comments on gmd-2019-66, "Bayesian spatiotemporal inference of trace gas emissions using an integrated nested Laplacian approximation and Gaussian Markov random fields"

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2019

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Preliminary design and optimization of a 20MW reference wind turbine

Cited by 25 publications

References 5 publications

Corotational Finite Element Formulation for Static Nonlinear Analyses with Enriched Beam Elements

Corotational Finite Element Formulation for Static Nonlinear Analyses with Enriched Beam Elements

A Research Framework for the Multidisciplinary Design and Optimization of Wind Turbines

Authors' response to reviewers' comments on gmd-2019-66, "Bayesian spatiotemporal inference of trace gas emissions using an integrated nested Laplacian approximation and Gaussian Markov random fields"

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Preliminary design and optimization of a 20MW reference wind turbine

Cited by 25 publications

References 5 publications

Corotational Finite Element Formulation for Static Nonlinear Analyses with Enriched Beam Elements

Corotational Finite Element Formulation for Static Nonlinear Analyses with Enriched Beam Elements

A Research Framework for the Multidisciplinary Design and Optimization of Wind Turbines

Authors' response to reviewers' comments on gmd-2019-66, &quot;Bayesian spatiotemporal inference of trace gas emissions using an integrated nested Laplacian approximation and Gaussian Markov random fields&quot;

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Authors' response to reviewers' comments on gmd-2019-66, "Bayesian spatiotemporal inference of trace gas emissions using an integrated nested Laplacian approximation and Gaussian Markov random fields"