JME_V2_N3_RP1 Jeremy (Zheng) Li Journal on Mechanical Engineering 2249 - 0744 2 3 1 4 Computer Modeling, Aerodynamic Analysis, Wind Power, Computational Simulation, Green/Renewable Energy Green or renewable energies are energies that can be produced without many negative impacts to the environment and the earth can naturally recover these energy resources when using these sustainable energies. Currently many researches are focusing on design and development of sustainable energy technologies due to the shortage of global traditional energy resources. The wind power turbine systems are used to convert nature wind power to the electricity. This green and clean energy can be used in many energy applications. There are two types of wind power turbine systems including vertical axis and horizontal axis wind turbines. In this research, a new type of vertical axis wind turbine system with improved power converting efficiency is designed and developed through fundamental study, computer-aided modeling, aerodynamic analysis, computational simulation, and prototype testing. May - July 2012 Copyright © 2012 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=1864