The simulation of blade-vortex interaction (BVI) for helicopter rotors remains a challenge for Computational Fluid Dynamics (CFD). In the current paper a high-order, block-structured, finite volume flow solver is applied to the well-known HART-Ⅱ baseline case. A new grid generation algorithm is presented which allows the automatic generation of locally refined meshes in user-specified regions, based on a regular block-structured mesh. The algorithm is used to generate a mesh with a given uniform resolution in the rotor disk area. The convection of the tip vortices is expected to improve on such a mesh. Flow results on both the unrefined and refined mesh confirm this expectation.
展开▼
