P. Gervasio, FRACTIONAL STEP METHODS FOR SPECTRAL APPROXIMATION OF ADVECTION-DIFFUSION EQUATIONS, Mathematical models and methods in applied sciences, 6(7), 1996, pp. 1027-1050
Several classical fractional step schemes are proposed for the spectra
l approximation of advection-diffusion equation in two-dimensional geo
metries. Suitable boundary conditions are studied in order to preserve
the accuracy of the schemes at each step. An example is given for the
application of the fractional step schemes to solve problems with lar
ge Peclet number.