Parallel curved mesh Subdivision for flow Simulation on curved Topographies

We present the implementation in the Alya code of a method to refine a mesh in parallel while preserving the curvature of a target topography. Our approach starts by generating a coarse linear mesh of the computational domain. Then, the former coarse mesh is curved to match the curvature of the target geometry. Finally, the curved mesh is given to the improved Alya code that now reads the curved mesh, partitions it, and sends the subdomain meshes to the slaves. The result is a finer linear mesh obtained in parallel with improved geometric accuracy. The main application of the obtained finer linear mesh is to compute a steady state flow solution on complex topographies