Investigation of lift and drag performance of a flap assisted wind turbine blade at different pitch angles

CFD analysis of conventional and spiral blade configurations for horizontal axis wind turbines

Parametric Optimization of the Aerodynamic Behavior of a Gas Turbine Blade : Influence of the Angle of Attack and the Reynolds Number

This study performs a Computational Fluid Dynamics (CFD) analysis of turbulent flow around a gas turbine blade, investigating the effects of angle of attack  and Reynolds number Re on aerodynamic performance. The objective was to quantify their impact on the lift CL, drag CD, and pressure Cp coefficients. Simulations u...

Aerodynamic Performance and Wake Characteristics of a Four-Rotor Wind Turbine

The continuous upscaling of offshore wind turbines exacerbates challenges such as blade flutter, stability degradation, and logistical difficulties. To address these issues, this study proposes a parallel multi-rotor wind turbine and systematically investigates its aerodynamic performance and wake characteristics. Base...

Investigation of the dynamic stall characteristics for floating offshore wind turbine during pitch and surge motions

Platform motions periodically alter the relative inflow velocity and blade angle of attack of floating offshore wind turbines (FOWT), making the accurate prediction of dynamic stall essential for assessing aerodynamic loads and power fluctuations. This study systematically evaluates the Beddoes-Leishman (BL) and Øye dy...

Experimental investigation on dynamic stall of cross-flow turbine airfoils in harmonic motion

Dynamic stall governs the unsteady aerodynamic performance and loading of cross-flow turbine blades undergoing periodic angle-of-attack variations. This work presents an experimental investigation of static and dynamic stall on a NACA0021 airfoil in harmonic pitching motion at chord-based Reynolds numbers up to 6 × 105...

Introducing the toroidal blade concept to small-scale horizontal axis wind turbine: A CFD study

This study evaluates the toroidal blade concept in horizontal-axis wind turbine design compared to conventional shapes. Both designs utilize the NACA 4412 airfoil, with the toroidal rotor featuring elliptical geometry. Three-dimensional transient CFD simulations using URANS equations and advanced turbulence models were...