Journal of Applied Mechanical Engineering

Geometric parameters study of windmill cascade for low Reynolds number

3^rd International Conference on Fluid Dynamics & Aerodynamics

October 25-26, 2018 | Berlin, Germany

R Mdouki

Tebessa University, Algeria

Posters & Accepted Abstracts: J Appl Mech Eng

Abstract:

Windmill is a renewable energy device used to extract the wind power with multi-blades under a low rotation speed in order to pump water. Generally, windmill employs circular arc airfoils qualified of high solidity and low thickness. In this work, the aim is to analyze the effect of the different geometric parameters of the windmill cascade. A 2D numerical simulation was carried out to study the effect of the camber, solidity, thickness ratio, thickness distribution on both lift and drag over a range of angle of attack. The Reynolds number used in experiment is almost 105; therefore the laminar separation bubble is an important phenomenon to be considered in the modelling of the turbulent flow. Under steady regime, pressure based RANS solver was selected with correlation-based intermittency turbulent model in order to predict the boundary layer transition aspect. The results were validated with experimental data and showed a good agreement. Furthermore, the influence of the leading edge, space between blades, camber form, maximum thickness is shown in this work.

Biography :

E-mail: mdouki_ramzi@yahoo.fr