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Introduction to Computational Fluid Dynamics (CFD) - page 39 / 47

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39

Post-processing (UA, Verification, cont’d)

Monotonic Convergence: Generalized Richardson Extrapolation

Oscillatory Convergence: Uncertainties can be estimated, but without

   signs and magnitudes of the errors.

 Divergence

1. Correction

factors

2. GCI approach

In this course, only grid uncertainties studied. So, all the variables with

  subscribe symbol k will be replaced by g, such as “Uk” will be “Ug

is the theoretical order of accuracy, 2 for 2nd order and 1 for 1st order schemes

is the uncertainties based on fine mesh solution,        is the uncertainties based on numerical benchmark SC

is the correction factor

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