Multigrid Method for Solution of 3D Helmholtz Equation Based on HOC Schemes

Table 1

Comparison of maximum absolute errors and CPU (seconds) for a Multigrid method with different schemes, for Example 1, , , and .

		CPU	V		CPU	V		CPU	V
4		0.105	2		0.042	2		0.042	2
8		0.140	2		0.055	2		0.054	2
16		0.780	2		0.061	2		0.060	2
32		0.810	2		0.088	2		0.087	2
64		0.940	2		0.322	2		0.313	2
128		1.137	2		2.233	2		2.224	2