On May 3, 2016, Dr. Qing-An LI from Mie University (National University of Japan) visited Institute for Energy Research of Jiangsu University, and presented a report on “The Study of Aerodynamics and Flow Field for Straight-Bladed Vertical Axis Windmill”.

　　In this report, multi point pressure measuring device within the wind tunnel test was used to explore the aerodynamic characteristics of windmill, and then LDV technology and three cup wind speed measuring instrument were used to investigate the output performance and flow field characteristics of windmill in the process of operation, it is found that the optimal power generation coefficient of the windmill is decreased with the increase of the number of blades.