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Modern wind farms comprised of horizontal-axis wind turbines (HAWTs) require significant land resources to separate each wind turbine from the adjacent turbine wakes. This aerodynamic constraint limits the amount of power that can be…

Fluid Dynamics · Physics 2011-06-27 John O. Dabiri

This paper presents a numerical and experimental analysis of the patent of a device to be used in vertical-axis wind turbines (VAWTs) under extreme wind conditions. The device consists of two hemispheres interconnected by a set of…

Applied Physics · Physics 2024-01-22 JA Moleón Baca , AJ Expósito González , C Gutiérrez Montes

Most wind farms consist of horizontal axis wind turbines (HAWTs) due to the high power coefficient (mechanical power output divided by the power of the free-stream air through the turbine cross-sectional area) of an isolated turbine.…

Fluid Dynamics · Physics 2015-05-18 Robert W. Whittlesey , Sebastian Liska , John O. Dabiri

The Darrieus vertical axis wind turbines (VAWTs) are one of the mainstream devices for wind energy utilization in the urban areas. The market's pursuit of high wind energy conversion efficiency promotes the research on improving the wind…

Fluid Dynamics · Physics 2023-02-21 Jie Su , Yu Tu , Limin Kuang , Rui Zhang , Yixiao Shao , Dai Zhou , Zhaolong Han , Kai Zhang

This study explored the aerodynamics of a new multi-stage co-axial vertical-axis wind turbine based on bio-inspiration from natural swimming habit of fish. The turbine was formed from a conventional straight-bladed vertical-axis turbine…

Fluid Dynamics · Physics 2021-07-12 Muhammad Saif Ullah Khalid , David Wood , Arman Hemmati

Co-locating horizontal- and vertical-axis wind turbines has been recently proposed as a possible approach to enhance the land-area power density of wind farms. In this work, we aim to study the benefits associated with such a co-location…

Fluid Dynamics · Physics 2020-09-23 Michael Hansen , Peter Enevoldsen , Mahdi Abkar

Renewable and sustainable energy is one of the most important challenges currently facing mankind. Wind has made an increasing contribution to the world's energy supply mix, but still remains a long way from reaching its full potential. In…

Neural and Evolutionary Computing · Computer Science 2022-12-05 Richard J. Preen , Larry Bull

Arrays of Vertical Axis Wind Turbines (VAWTs) can achieve larger power generation per land area than horizontal axis turbines farms, due to the positive synergy between VATs in close proximity. Theoretical wake models enable the reliable…

Fluid Dynamics · Physics 2023-01-10 Pablo Ouro , Maxime Lazennec

A wind turbine works with the principle of extracting energy from the wind to generate electricity. The power generated is directly proportional to the wind speed available. There are two major types of wind turbine design namely the…

Signal Processing · Electrical Eng. & Systems 2018-07-30 Aravind CV , Rajparthiban R , Rajprasad R , Grace I , Rozita Teymourzadeh , M. Norhisam

We have recently presented an initial study of evolutionary algorithms used to design vertical-axis wind turbines (VAWTs) wherein candidate prototypes are evaluated under approximated wind tunnel conditions after being physically…

Neural and Evolutionary Computing · Computer Science 2016-02-16 Richard J. Preen , Larry Bull

With the growing demand for power and the pressing need to shift towards renewable energy sources, wind power stands as a vital component of the energy transition. To optimize energy production, researchers have focused on design…

Fluid Dynamics · Physics 2023-11-14 Paras Singh , Vishal Jaiswal , Subhrajit Roy , Raj Kumar Singh

The production of renewable and sustainable energy is one of the most important challenges currently facing mankind. Wind has made an increasing contribution to the world's energy supply mix, but still remains a long way from reaching its…

Neural and Evolutionary Computing · Computer Science 2015-07-02 Richard J. Preen , Larry Bull

Wind energy has emerged as a viable alternative to fossil fuels, with vertical axis wind turbines (VAWTs) gaining popularity due to their efficiency and adaptability. Combining the Actuator Line Method (ALM) with Large Eddy Simulation (LES)…

Fluid Dynamics · Physics 2023-10-13 Dinesh Kumar Reddy G , Mayank Verma , Ashoke De

A numerical data set will be developed to assist in the design of Savonius wind turbines. The main objective of study is to improve Savonius turbine blade designs to increase torque coefficients, rotational speeds, and pressure…

Fluid Dynamics · Physics 2023-08-29 Seyed Ehsan Hosseini , Omid Karimi , Mohammad Ali AsemanBakhsh

Vertical-axis wind turbines (VAWT) are excellent candidates to complement traditional wind turbines and increase the total wind energy capacity. Development of VAWT has been hampered by their low efficiency and structural unreliability,…

Fluid Dynamics · Physics 2022-08-23 Sébastien Le Fouest , Karen Mulleners

Wind energy is the most mature renewable energy technology, however, its exploitation in cities is often met with skepticism. Thanks to their ability to operate effectively at low wind from any direction, vertical axis wind turbines (VAWTs)…

Physics and Society · Physics 2025-01-22 Aldo Brandi , Gabriele Manoli

To design and optimize arrays of vertical-axis wind turbines (VAWTs) for maximal power density and minimal wake losses, a careful consideration of the inherently three-dimensional structure of the wakes of these turbines in real operating…

This study focuses on the numerical analysis and optimal control of vertical-axis wind turbines (VAWT) using Bayesian reinforcement learning (RL). We specifically address small-scale wind turbines, which are well-suited to local and compact…

Systems and Control · Electrical Eng. & Systems 2023-03-14 Vahid Tavakol Aghaei , Arda Ağababaoğlu , Biram Bawo , Peiman Naseradinmousavi , Sinan Yıldırım , Serhat Yeşilyurt , Ahmet Onat

A method for inverse design of horizontal axis wind turbines (HAWTs) is presented in this paper. The direct solver for aerodynamic analysis solves the Reynolds Averaged Navier Stokes (RANS) equations, where the effect of the turbine rotor…

Fluid Dynamics · Physics 2017-03-17 Behnam Moghadassian , Anupam Sharma

Cross-flow turbine (known as vertical-axis wind turbines or ``VAWTs'' in wind) blades encounter a relatively undisturbed inflow for the first half of each rotational cycle (``upstream sweep'') and then pass through their own wake for the…

Fluid Dynamics · Physics 2025-01-24 Abigale Snortland , Aidan Hunt , Owen Williams , Brian Polagye
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