Post-processing (UA, Verification)
Convergence studies: Convergence studies require a minimum of m=3 solutions to evaluate convergence with respective to input parameters. Consider the solutions corresponding to fine , medium ,and coarse meshes
(i). Monotonic convergence: 0<Rk<1
(ii). Oscillatory Convergence: Rk<0; | Rk|<1
(iii). Monotonic divergence: Rk>1
(iv). Oscillatory divergence: Rk<0; | Rk|>1
Grid refinement ratio: uniform ratio of grid spacing between meshes.