Fig. 21From: An improved WENO-Z scheme with symmetry-preserving mappingContour lines of density of 2D Riemann problem at t = 0.8. This figure is drawn with 34 density contours between 0.15 and 1.75. A uniform grid with 400 × 400 cells is used, \( \Delta x=\Delta y=\frac{1}{400} \). CFL = 0.5Back to article page