Research Article

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

Table 4

Comparison of maximum absolute errors and CPU (seconds) for a Multigrid method with different schemes, for Example 4, , , and .

CPU (seconds) CPU (seconds) CPU (seconds)

2 3.908 2.188 0.039
3 4.502 2.550 0.317
4 6.880 3.701 0.856
5 10.024 3.924 1.538
6 12.385 4.618 1.876