Abstract
In this paper two related schemes are compared for two-dimensional linear advection: a scheme based on dimension splitting starting from a fully discrete one-dimensional discretization, and a scheme based on the method of lines. Both schemes use the same four-point, upwind biased stencil in each direction, and both are considered with flux limiting to avoid oscillations and negative values in the solutions. Along with a theoretical discussion, we also give some numerical test results, on uniform grids and with local uniform grid refinement, to compare the accuracy and computational efficiency.
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