This report was a result of my master thesis in the Master of Wind Energy degree at Technical
University of Denmark. The thesis work was started at July in 2004 and finished after six months.During this period, associate Professor Wen-Zhong Shen at Fluid Mechanics section in Department of Mechanical Engineering was attached as my supervisor. The assignment consists of analyzing pressure coefficient values for different airfoil at various angles of attack by numerical predictions and getting empiric formula. The master thesis as a whole is counting 30 credits.I would like to thank my supervisor, Wen-Zhong Shen for his continued guidance, support, and admirable patience during my project work. His experience and theoretical background were fundamentally important for my work described in this thesis. Without his encouragement and support this thesis would not have been completed in the allowable dime duration. I also thank Professor Jens N?rk?r S?rensen and assistant Professor Robert Mikkelsen for my research.