Читать книгу Wind Energy Handbook - Michael Barton Graham - Страница 119

Self‐induced aerodynamic noise arises from a number of causes: (i) interaction of the blade turbulent boundary layers with the trailing edge, (ii) noise due to locally separated flow, (iii) noise due to the vortex wake, usually due to and from a blunt trailing edge but at low Reynolds numbers can alternatively be laminar wake instability, and (iv) noise due to the blade‐tip vortex.