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Introduction to Computational Fluid Dynamics (CFD) - page 38 / 47

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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.

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