Numerical Prediction of Noise radiated from a Propeller Fan

Abstract

   Presented in this paper is a numerical simulation of the aerodynamic sound radiated from a Propeller Fan. It is found that the turbulent boundary layer can be captured to some extent by using grid resolution of about 1 hundred elements per blade and the leading edge separation vortex play major role in the noise production rather than tip vortex. The broadband noise calculated by curle's equation shows relatively good agreement with the measurement though Blade Passing Frequency noise can not be predicted completely because of no consideration of inflow turbulence. [This abstract is not included in the PDF]