Numerical investigation of aerodynamics and acoustics of rigid main rotor in forward flight

Abstract

The paper is devoted to the numerical simulation of the flow near the rigid helicopter rotor in the forward flight mode using the Reynolds-averaged Navier-Stokes equations in the rotating non-inertial reference frame. The numerical method is based on the vertex-centered EBR scheme for unstructured hybrid meshes. The computations are performed using the in-house code NOISEtte and the software package ANSYS CFX. The numerically obtained aerodynamic characteristics of the rotor are comparatively analysed against the results of full-scale experiments.