Special Issue "Numerical Simulation of Wind Turbine"

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "Wind, Wave and Tidal Energy".

Deadline for manuscript submissions: 30 June 2020.

Special Issue Editors

Prof. Dr. Giovanni Ferrara
E-Mail Website
Guest Editor
Department of Industrial Engineering (DIEF), Università degli Studi di Firenze, Via di Santa Marta 3, I-50139 Firenze, Italy
Interests: internal combustion engines; engineering thermodynamics; energy engineering; wind; energy conversion; fluid mechanics; refrigeration and air conditioning; energy modeling; power generation.
Prof. Dr. Alessandro Bianchini
E-Mail Website
Guest Editor
Department of Industrial Engineering (DIEF), Università degli Studi di Firenze, Via di Santa Marta 3, I-50139 Firenze, Italy
Interests: Energy; Wind; Aerodynamics; Engineering; Centrifugal Compressors; Energy Systems
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colleague,

Wind turbines are by far the largest turbomachines of the world, with blade lengths that are now much longer than 100 meters and with a weight of several tons. The level of complexity of these blades in terms of aerodynamics and structural loads is enormous. Moreover, the functioning of a wind turbine involves many different physical scales, ranging from those of atmospheric flows (lengthscale in the order of meters) to very small ones on the blades surface (lengthscale in the order of millimeters). As readily arguable, reproducing reliably full similitude conditions in wind tunnels is intrinsically unfeasible.

In this scenario, simulations are pivotal to ensure the further development of wind turbines. If engineering models like those based on the Blade Element Momentum (BEM) theory are well assessed and still largely used in the industry, the next generation of larger rotors will require the use of more refined theories, ranging from medium-fidelity models, like the Lifting Line theory (LLT), to the massive use of high-fidelity CFD.

The present Special Issue of Energies aims to gather improvements and recent advances in existing simulations methods for wind turbines. Topics of interest for the Special Issue include (but are not limited to) numerical models for:

  • aerodynamics: BEM, LLT, CFD techniques, hybrid simulation techniques
  • structural loads
  • aeroelasticity
  • multi-physics
  • noise
  • control
  • inflow modeling

Looking forward to receiving your contributions.

Prof. Dr. Giovanni Ferrara
Prof. Dr. Alessandro Bianchini
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • wind turbine
  • simulation
  • CFD
  • lifting line
  • BEM
  • numerical simulation

Published Papers (1 paper)

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Research

Open AccessArticle
An Acoustic Source Model for Applications in Low Mach Number Turbulent Flows, Such as a Large-Scale Wind Turbine Blade
Energies 2019, 12(23), 4596; https://doi.org/10.3390/en12234596 - 03 Dec 2019
Abstract
Aerodynamic noise from wind turbine blades is one of the major hindrances for the widespread use of large-scale wind turbines generating green energy. In order to more accurately guide wind turbine blade manufacturers to optimize the blade geometry for aerodynamic noise reduction, an [...] Read more.
Aerodynamic noise from wind turbine blades is one of the major hindrances for the widespread use of large-scale wind turbines generating green energy. In order to more accurately guide wind turbine blade manufacturers to optimize the blade geometry for aerodynamic noise reduction, an acoustic model that not only understands the relation between the behavior of the sound source and the sound generation, but also accounts for the compressibility effect, was derived by rearranging the continuity and Navier–Stokes equations as a wave equation with a lump of source terms, including the material derivative and square of the velocity divergence. Our acoustic model was applied to low Mach number, weakly compressible turbulent flows around NACA0012 airfoil. For the computation of flow fields, a large-eddy simulation (LES) with the dynamic Smagorinsky subgrid scale (SGS) model and the cubic interpolated pseudo particle (CIP)-combined unified numerical procedure method were conducted. The reproduced turbulent flow around NACA0012 airfoil was in good agreement with the experimental data. For the estimation of acoustic fields, our acoustic model and classical sound source models, such as Lighthill and Powell, were performed using our LES database. The investigation suggested that the derived material derivative of the velocity divergence plays a dominant role as sound source. The distribution of the sources in our acoustic model was consistent with that of the classical sound source models. The sound pressure level (SPL) predicted based on the above-mentioned LES and our newly derived acoustic model was in reasonable agreement with the experimental data. The influence of the increase of Mach number on the acoustic field was investigated. Our acoustic source model was verified to be capable of treating the influence of Mach numbers on the acoustic field. Full article
(This article belongs to the Special Issue Numerical Simulation of Wind Turbine)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

1. Giovanni Ferrara, [email protected], CFD siting of wind turbines

2. Alessandro Bianchini, [email protected], Low Order Models (LOMs) for wind turbine simulation.

3. Giovanni Ferrara, [email protected], Advanced Research in Turbomachinery.

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