Table 2.

Convergence analysis for the Lax–Wendroff scheme-based IIM (ε₂ = 2.25 and μ₂ = 2)

Grid	h	K	M = 6		M = 9		M = 25
			||E||	Order	||E||	Order	||E||	Order
50 × 50	$\frac{1}{25}$	$\frac{1}{50\sqrt{2}}$	9.83E+79		5.01E–1		5.01E–1
100 × 100	$\frac{1}{50}$	$\frac{1}{100\sqrt{2}}$	∞	div	1.29E–1	1.95	1.29E–1	1.95
200 × 200	$\frac{1}{100}$	$\frac{1}{200\sqrt{2}}$	∞	div	3.63E–2	1.83	3.68E–2	1.81
400 × 400	$\frac{1}{200}$	$\frac{1}{400\sqrt{2}}$	∞	div	1.02E–2	1.83	9.99E–3	1.88