تکنیک کاهش نویز آیرودینامیکی در صنعت هوافضا

This review aims to assist aerodynamic noise in aerospace industry. in this review the general terms in aeroacoustics is defined; after that aerodynamic noise sources are recognized. the paper also reviews the brief literature on noise reduction techniques, with a particular focus on the state of the art numerical and experimental works rather than theoretical research. also, developments in low speed designs for aerodynamic noise reduction, some passive and active methods for example serrated boundaries; porous media, noise absorber, and etc. are discussed. finally this paper offers an overview on noise reduction via innovative application of flow and noise control techniques