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Post-processing

  The ISNaS incompressible program computes the fluxes in the midside points of the cells and the scalars in the centroids. For post-processing purposes these quantities are needed in the vertices of the cells. For that reason it is necessary to interpolate (or at the boundary extrapolate) the computed values to the vertex points. Numerical examples have shown that a straighforward interpolation in the computational space is not accurate enough. For that reason a weighted approach, taking into account the distances in physical space, is necessary. In the following sections we consider the interpolation and backtransformation applied both for scalar quantities and for the fluxes.




Tatiana Tijanova
Wed Mar 26 10:36:42 MET 1997