The relative phase error (RPE) is a measure of the amount of oscillations while the effective amplification factor measures the amount of damping in a numerical scheme. Recently [2], we have devised a new method baptised as the Minimised Integrated Square Difference Error, (MISDE) for obtaining efficient shock-capturing schemes. In this work, we show based on our concept that the 4-6 Low-Dissipation and Dispersion Runge-Kutta (4-6 LDDRK) [6] is very efficient to capture shocks. Using MISDE, we obtain a modified form of the Fromm's scheme in 1-D which is less dispersive. An optimal value of the parameter, ε at cfl = 0.9 in the LW - ε [10] scheme is also computed. It is shown that the Sαβ scheme [5] is more efficient than the 2-D MacCormack scheme to capture shocks. We solve the 2-D circular explosion problem [11] using the LWLF6 and MCLF6 [1] schemes at some cfl numbers and show that shock capturing ability is dependent on the cfl number. © Springer-Verlag Berlin Heidelberg 2007.
CITATION STYLE
Appadu, A. R., Dauhoo, M. Z., & Rughooputh, S. D. D. V. (2007). Efficient shock-capturing numerical schemes using the approach of minimised integrated square difference error for hyperbolic conservation laws. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 4707 LNCS, pp. 774–789). Springer Verlag. https://doi.org/10.1007/978-3-540-74484-9_66
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