Review of Flow-Control Devices for Wind-Turbine Performance Enhancement

It is projected that, in the following years, wind-energy industry will maintain its rapid growth over last few decades. Such has been accompanied by desirability and demand for larger wind turbines aimed at harnessing more power. However, fact that massive turbine blades inherently experience increased fatigue ultimate loads no secret, which compromise their structural lifecycle. Accordingly, this demands higher overhaul-and-maintenance (O&M) costs, leading to cost of energy (COE). Introduction flow-control devices on a plausible solution issue. Flow-control mechanisms feature ability effectively enhance/suppress turbulence, advance/delay flow transition, prevent/promote separation, enhancement aerodynamic aeroacoustics performance, load alleviation fluctuation suppression, eventually power augmentation. These are operated primarily under two schemes: passive active control. Development optimization present potential reduction COE, major challenge against traditional sources. This review performs comprehensive up-to-date literature survey selected devices, from time development up present. contains discussion current prospects challenges faced these along with comparative analysis centered controllability. General considerations conclusive remarks presented after discussion.