Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
6.2
3.0
Journals
Energies
Special Issues
Aerodynamically Coupled Phenomena in Wind Turbine
energies-logo
Submit to Energies Review for Energies Propose a Special Issue

Journal Menu

► Journal Menu

Journal Browser

► Journal Browser
share announcement

Aerodynamically Coupled Phenomena in Wind Turbine

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A3: Wind, Wave and Tidal Energy".

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 4604

Special Issue Editors

Prof. Dr. Duck Joo Lee

E-Mail Website
Guest Editor
Department of Aerospace Engineering, KAIST, Deajeon 34141, Korea
Interests: aeroacoustics; CAA; rotor noise; jet noise
Prof. Dr. Yeongmin Jo

E-Mail Website
Guest Editor
Department of Unmanned Aerial Vehicle, Hanseo University, Taean 31962, Korea
Interests: computational fluid dynamics; design optimization; aircraft system design; aeroacoustics
Dr. Sang Lee

E-Mail Website
Guest Editor
Department of Aerospace Engineering, KAIST, Deajeon 34141, Korea
Interests: urban flows; wake dynamics; shock-boundary layer interaction

Special Issue Information

Dear Colleagues,

This Special Issue in Energies, entitled Aerodynamically Coupled Phenomena in Wind Turbine, focuses on recent advances in basic research, technology development, and environmental impacts of new Wind energy technologies. Wind turbines interacts with atmospheric flows by exhibiting various physical responces such as meandering wakes, noise, blade dynamic stall, power fluctuations, etc. The issue includes papers that either discuss new engineering and science or reviews of the existing literature. Topics examined include, among others, rotational aerodynamic noise, unsteady aerodynamics science and technology, inflow effects on noise and power, dynamic instability due to aerodynamics and water waves, combining new technologies with prections and measurements. A discussion on the multi-physical nature of wind turbine operations and current technological problems seen in wind farms will be the focus of the present special edition issue.

Prof. Dr. Duck Joo Lee
Prof. Dr. Yeongmin Jo
Prof. Dr. Sang Lee
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 submissions that pass pre-check are 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 2600 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 Farms 
  • Unsteady Aerodynamics 
  • Flow-Structure Interactions 
  • Aerodynamic Noise 
  • Dynamic Instability 
  • Wind-Wave Interactions 
  • Wake Flows 
  • Wind Turbine Controls 
  • Turbulence-Induced Fatigue 
  • Inflow Effects 
  • Gust Effects 
  • Computational Fluid Dynamics
  • Computational Aero-Acoustics

Published Papers (2 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

22 pages, 1359 KiB  
Article
Swept Blade Dynamic Investigations for a 100 kW Small Wind Turbine
by Ozan Gözcü, Taeseong Kim, David Robert Verelst and Michael K. McWilliam
Energies 2022, 15(9), 3005; https://doi.org/10.3390/en15093005 - 20 Apr 2022
Cited by 3 | Viewed by 2178
Abstract
Most small–medium-sized turbine studies have focused on presenting new design methods and corresponding performance improvements rather than detailed dynamic investigations. This paper presents comprehensive dynamic investigations of a straight and a swept-back blade for a 100 kW turbine by performing modal analysis, [...] Read more.
Most small–medium-sized turbine studies have focused on presenting new design methods and corresponding performance improvements rather than detailed dynamic investigations. This paper presents comprehensive dynamic investigations of a straight and a swept-back blade for a 100 kW turbine by performing modal analysis, dynamic load analysis, and flutter analysis. The considered load cases include steady wind and operational conditions under normal and extreme turbulence. Modal results show that although both blades have similar natural frequencies, their mode shapes are quite different due to the couplings in flapwise-torsion directions introduced by the back-swept geometry. This coupling alters the aeroelastic response of the blade, which results in different loads in the operational conditions. The load analysis results show that the blade damage equivalent fatigue loads for the swept blade are much lower (up to 29% for the flapwise bending moment and 31% for the edgewise bending moment) than the straight blade. For the ultimate loads, blade root edgewise load for the swept blade is almost 50% lower than the straight blade while the flapwise ultimate load is similar for both blades. Moreover, both blades have no aeroelastic instability near the operational conditions, and the flutter limit for the swept-back blade is lower than the straight blade. Full article
(This article belongs to the Special Issue Aerodynamically Coupled Phenomena in Wind Turbine)
►▼ Show Figures

Figure 1

24 pages, 6446 KiB  
Article
Numerical Simulation and Wind Tunnel Investigation on Static Characteristics of VAWT Rotor Starter with Lift-Drag Combined Structure
by Fang Feng, Guoqiang Tong, Yunfei Ma and Yan Li
Energies 2021, 14(19), 6167; https://doi.org/10.3390/en14196167 - 27 Sep 2021
Cited by 4 | Viewed by 1549
Abstract
In order to get rid of the impact of the global financial crisis and actively respond to global climate change, it has become a common choice for global economic development to develop clean energy such as wind energy, improve energy efficiency and reduce [...] Read more.
In order to get rid of the impact of the global financial crisis and actively respond to global climate change, it has become a common choice for global economic development to develop clean energy such as wind energy, improve energy efficiency and reduce greenhouse gas emissions. With the advantages of simple structure, unnecessary facing the wind direction, and unique appearance, the vertical axis wind turbine (VAWT) attracts extensive attention in the field of small and medium wind turbines. The lift-type VAWT exhibits outstanding aerodynamic characteristics at a high tip speed ratio, while the starting characteristics are generally undesirable at a low wind speed; thus, how to improve the starting characteristics of the lift-type VAWT has always been an important issue. In this paper, a lift-drag combined starter (LDCS) suitable for lift-type VAWT was proposed to optimize the starting characteristics of lift-type VAWT. With semi-elliptical drag blades and lift blades equipped on the middle and rear part outside the starter, the structure is characterized by lift-drag combination, weakening the adverse effect of the starter with semi-elliptical drag blades alone on the output performance of the original lift-type VAWT and improving the characteristics of the lift-drag combined VAWT. The static characteristic is one of the important starting characteristics of the wind turbine. The rapid development of computational fluid dynamics has laid a solid material foundation for VAWT. Thus the static characteristics of the LDCS with different numbers of blades were investigated by conducting numerical simulation and wind tunnel tests. The results demonstrated that the static torque coefficient of LDCS increased significantly with the increased incoming wind speed. The average value of the static torque coefficient also increased significantly. This study can provide guidelines for the research of lift-drag combined wind turbines. Full article
(This article belongs to the Special Issue Aerodynamically Coupled Phenomena in Wind Turbine)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-2
Back to TopTop