Fourth-order nonoscillatory upwind and central schemes for hyperbolic conservation laws

The aim of this work is to solve hyperbolic conservation laws by means of a finite volume method for both spatial and time discretization. We extend the ideas developed in [X.-D. Liu and S. Osher, SIAM J. Numer. Anal., 33 (1996), pp. 760-779; X.-D. Liu and E. Tadmor, Numer. Math., 79 (1998), pp. 397-425] to fourth-order upwind and central schemes. In order to do this, once we know the cell-averages of the solution, (u) over bar (n)(j), in cells I-j at time T = t(n), we define a new three-degree reconstruction polynomial that in each cell, I-j, presents the same shape as the cell-averages {(u) over bar (n)(j-1), (u) over bar (n)(j), (u) over bar (n)(j+1)}. By combining this reconstruction with the nonoscillatory property and the maximum principle requirement described in [X.-D. Liu and S. Osher, SIAM J. Numer. Anal., 33 (1996), pp. 760-779] we obtain a fourth-order scheme that satisfies the total variation bounded (TVB) property. Extension to systems is carried out by componentwise application of the scalar framework. Numerical experiments confirm the order of the schemes presented in this paper and their nonoscillatory behavior in different test problems.