Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
A NEW OPTIMIZATION PROCEDURE APPLIED TO HYDROKINETIC TURBINE SWEPT BLADES
Submission Author:
MIRIAM LYS DE ALMEIDA GEMAQUE , PA
Co-Authors:
MIRIAM LYS DE ALMEIDA GEMAQUE , Jerson Vaz, Osvaldo R. Saavedra
Presenter: MIRIAM LYS DE ALMEIDA GEMAQUE
doi://10.26678/ABCM.COBEM2021.COB2021-1344
Abstract
Hydrokinetic turbine has been used worldwide for electrical generation purpose, as such a technology may strongly reduce environmental impact. Turbines designed using backward swept blades can significantly reduce axial load, being relevant for hydro turbines. However, only few works have been made in the literature on this regard. For the case of hydrokinetic rotors, backward swept blades are still challenge as the authors are unaware of any optimization procedure available, becoming this paper relevant for the current state-of-the-art. Thus, the present work develops a new optimization procedure applied to hydrokinetic turbine swept blades, being the main contribution of the approach the design of blades with reduced axial load on the rotor. The proposed method consists of an extension of the axial and blade element theories to the case of backward swept blades through a radial transformation function. As a result, such a transformation heavily affects chord and twist angle distributions along the blade, increasing the turbine torque and power coefficient.
Keywords
Swept blades, hydrokinetic turbines, Blade optimization
