2D Smooth Mesh Generation in Complex Geometries

Quality mesh generation for complex computational geometries still remains a challenging step in Computational Fluids Dynamics (CFD) analysis. This paper presents a method for 2D smooth mesh generation in geometrically complex domains where the local orthogonal conditions may result in skewed or overlapping mesh which is generally acceptable in numerical simulation. In the proposed method, two exponential parameters are introduced into the RL (Ryskin and Leal) orthogonal mesh generation system to control the distortion functions (orthogonal conditions). These parameters are adjustable and can be either user-specified or automatically evaluated by the smoothness conditions. With the relaxed orthogonal conditions, nearly orthogonal but smooth mesh is achieved in complex geometries. Examples and applications are also investigated in this paper.