# Dynamic stall in vertical axis wind turbines: scaling and topological considerations

@article{Buchner2018DynamicSI, title={Dynamic stall in vertical axis wind turbines: scaling and topological considerations}, author={A-J. Buchner and Julio Soria and Damon R. Honnery and Alexander J. Smits}, journal={Journal of Fluid Mechanics}, year={2018}, volume={841}, pages={746 - 766} }

Vertical axis wind turbine blades are subject to rapid, cyclical variations in angle of attack and relative airspeed which can induce dynamic stall. This phenomenon poses an obstacle to the greater implementation of vertical axis wind turbines because dynamic stall can reduce turbine efficiency and induce structural vibrations and noise. This study seeks to provide a more comprehensive description of dynamic stall in vertical axis wind turbines, with an emphasis on understanding its parametric… Expand

#### 29 Citations

Dynamic stall on an airfoil undergoing VAWT blade angle of attack variations

- Geology
- 2020

Vertical axis wind turbines have several attractive features in the context of energy production in urban areas, but the inherent aerodynamic complexity of the flow around them has challenged their… Expand

The effects of inflow conditions on vertical axis wind turbine wake structure and performance

- Geology
- Journal of Wind Engineering and Industrial Aerodynamics
- 2018

Abstract The behavior of wind turbines wakes is of considerable interest, especially in the context of wind farms where wake-turbine interactions are important. Here we investigate experimentally the… Expand

Influence of Tip Speed Ratio on wake features of a Vertical Axis Wind Turbine

- Physics
- 2020

Abstract Dependence of wake features of a Vertical Axis Wind Turbine (VAWT) on Tip Speed Ratio ( T S R ) is studied in the present work, using a computational approach, based on Large-Eddy Simulation… Expand

A critical analysis of the stall onset in vertical axis wind turbines

- Physics
- 2020

Abstract The dynamic stall phenomenon in Vertical Axis Wind Turbines (VAWTs) appears under some operating conditions that have not been very well established. Some studies have focused on describing… Expand

Towards optimal aerodynamic design of vertical axis wind turbines: Impact of solidity and number of blades

- Mathematics
- Energy
- 2018

The current study systematically analyzes the impact of solidity (σ) and number of blades (n) on the aerodynamic performance of 2-, 3- and 4-bladed Darrieus H-type vertical axis wind turbines… Expand

Dynamic Stall of a Vertical-Axis Wind Turbine and Its Control Using Plasma Actuation

- Engineering
- Energies
- 2019

In this paper, a dynamic stall control scheme for vertical-axis wind turbine (VAWT) based on pulsed dielectric-barrier-discharge (DBD) plasma actuation is proposed using computational fluid dynamics… Expand

Effect of vortices on power output of vertical axis wind turbine (VAWT)

- Geology
- 2020

Abstract Performance of a vertical axis wind turbines (VAWTs) is a major focus of research these days. The present research focuses on numerical investigate the performance of a VAWT in the presence… Expand

Active flow control for power enhancement of vertical axis wind turbines: Leading-edge slot suction

- Materials Science
- 2019

Vertical axis wind turbines (VAWTs) suffer from a poor power performance at low tip speed ratios, where their blade aerodynamics are dominated by unsteady separation and dynamic stall. Therefore, to… Expand

High-resolution numerical investigation into the effects of winglet on the aerodynamic performance for a three-dimensional vertical axis wind turbine

- Physics
- 2020

Abstract Vertical axis wind turbines can harvest kinetic energy in the air stream from all directions and therefore have distinct advantages in the effective utilization of wind resource. Its… Expand

Near-Wake Dynamics of a Vertical-Axis Turbine

- Physics
- 2021

Cross-flow, or vertical-axis, turbines are a promising technology for capturing kinetic energy in wind or flowing water and their inherently unsteady fluid mechanics present unique opportunities for… Expand

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