A New (?) Alternative for Decision-Making Concerning the Cost/Accuract Controversy

Abstract

1 technique for the iaprovement of the accuracy of numerical solutions in a class of fluid dynamic problems is preeented. It consists in the explicit consideration of local analytical solutions in selected sones of the integration domain. This technique alloys for the obtention of very accurate solutions with very coarse grids and has been applied in a finite-difference context. The examples shown are valid for one-dimensional cases of advection-diffusion and for two-dimensional, steady, potential flow.