Abstract:
In the given paper, dissipative properties of TVD and WENO schemes are tested and compared. A brief review of limiters used in TVD schemes is presented. An iterative procedure of limiting minmod reconstruction is described. A procedure of WENO-reconstruction inside the cell for uniform grids is presented. For the test cases, a problem of wave packet transport and a problem of numerical diffusion of vortices are used. A problem of wave packet transport is solved for uniform and non-uniform grids. On the basis of comparison of theoretical and numerical solutions, dissipative properties of different limiters for TVD scheme and WENO scheme are estimated.
Keywords:TVD, limiting reconstruction, WENO, transport equation, vortex, Euler equations.