Journals Proceedings

Abstract

A Hybrid Grid Generation Method that combines the computational efficiency of the Cartesian grid and the flexibility of the meshless strategy is developed for computation of the compressible invicid flows over general geometries and moving boundary applications. The meshless zone is created around the geometry by producing layers of nodes along normal direction vectors while Cartesian grid method is used elsewhere. Last layer is used as virtual geometry for automatic generation of unstructured Cartesian grid around meshless zone. An efficient central difference scheme with artificial dissipation terms is developed for both Cartesian grid and meshless zones. The method is used for computation of flows around stationary, moving and oscillating airfoil at subsonic and transonic flow conditions. Results indicate good agreements with other reference numerical data.