Mechanical & Aerospace Engineering

Biography

Biography: Shaaban Abdallah

Abstract

A patterned wind turbine farm is a new concept for development of power generationusing vertical axis wind turbines (VAWTs). In this study, we developed efficient patterned vertical axis wind turbine farms that consist of multiples of three VAWT clustershaving the same topology with scaled geometrical ratios of the cluster.The farms have high efficiency compared to conventional aligned and staggered farmlayouts. The developed cluster is based on the numerical study of the efficiency of clusters of two VAWTs in parallel and oblique layouts.The numerical model isvalidated by solving two- and three-dimensional turbulent flows through single Savonius and Darrieus VAWTs at different tip speed ratios and the results for the power coefficient show good agreements with the available experimental data.The developed triangular cluster has an enhanced average power coefficient up to 26% higher than that of an isolated turbine. The cluster generates 3.2 times the power generated by an isolated turbine with a power ratio 1:1.2:1 between its individual turbines. The developed farms have the same power scaling factor andpower coefficient enhancement ratios of the three turbine cluster. Numerical solutions of farms that consist of nine and twenty-seven turbinesconfirmthe pattern and the enhanced power coefficient. The scaling factor of 3.2 can be used to predict the performance of larger farms with the same topology to save processing time and man power.