Aerodynamic Optimization Design and Calculation of a 2MW Horizontal Axial Wind Turbine Rotor Based on Blade Theory and Particle Swarm Optimization - Yang, Congxin; Lv, Xiaojing; Tong, Gang; Song, Xiancheng (2011 Asia-Pacific Power and Energy Engineering Conference, Power and Energy Engineering Conference (APPEEC), 2011 Asia-Pacific, 2011)