978-620-0-10048-1

New Advances in Wind Energy Technologies

Aerodynamic Loading and Performance of Vertical Axis Wind Turbines Under Unsteady Winds

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Summary:

There is a pressing environmental need to reduce global greenhouse gas emissions through technologies that are capable of extracting energy from the environment whilst being non-polluting and sustainable. New advances in wind energy technologies for improving aerodynamic performance of vertical axis wind turbines (VAWTs) has been the focus in the 21st century. The book presents both numerical and experimental wind tunnel approaches to provide a detailed understanding of the aerodynamic performance of the small-scale wind turbines under unsteady winds. Computational Fluid Dynamics (CFD) models validated against the experimental data are utilized to provide additional insight into VAWT behavior. The experimental design setup and use of a wind tunnel-based performance testing assembly is described in detail. The apparatus are described for the various components of the testing rig including the rotor assembly, the measurement assemblies, the braking system assemblies, and the development of the data logging program. The analysis is key for wind energy stakeholders to inform investment requiring designs for wind turbine blades, reflecting realistic unsteady wind operating conditions.

Author:

David Wekesa

Biographie:

Dr. D. W. Wekesa has over ten (10) years research experience with in-depth knowledge as a proficient and experienced applied physicist in renewable energy technologies. He is a Humboldtian postdoctoral research fellow from Ulm University of Applied Sciences, Germany; and currently the Director Centre for Renewable Energy, Machakos University, Kenya

Number of Pages:

204

Book language:

English

Published On:

2019-05-21

ISBN:

978-620-0-10048-1

Publishing House:

LAP LAMBERT Academic Publishing

Keywords:

Aerodynamic loading, Turbulent unsteady wind, built-up urban environment, VAWT, Wind tunnel experiment, CFD, power coefficient, Torque Coefficient

Product category:

TECHNOLOGY / Electricity