Comparison between different grid methodologies for rotorcraft configurations

Abstract

There is a wide variety of CFD grid types including Cartesian, structured, unstructured, and hybrids as well as numerous methodologies of combining grids together to reduce the time required to generate high quality grids around complex configurations. This paper presents a comparison of some of the different meshing techniques implemented within the Helicopter Multi-Block CFD method and highlights the merits of each. The paper also presents some of the challenges in developing CFD solutions that can cope with a variety of grids, and deliver efficient solutions.