engleski

Method of calculation of aerodynamic and acoustic characteristics of aerodynamic profiles

The paper considers the theory of explaining the physical mechanisms of the occurrence of the trailing edge aerodynamic tonal noise of the airfoils. An analysis of the possibilities of using the ANSYS FLUENT software package for direct calculation of the aerodynamic and acoustic characteristics of airfoils in the near field is carried out using the example of NACA0012 for the transitional flow regime. Characteristic features are reproduced, such as the formation of a “separation bubble” and the subsequent sequential appearance of descending vortices. The results let a more detailed study of the physical picture of the processes of vortex formation, and, accordingly, the process of generating sound vibrations. The considered technique allows carrying out further computational studies on the development of technology for reducing the aerodynamic noise of wind turbines.

airfoils ; aerodynamic tonal noise ; acoustic characteristics

The conference was canceled due the low number of presenters registered for the conference, but the Book of abstracts has been published.