High-Order Spectral Finite Elements in Analysis of Collinear Wave Mixing

Table 2

The comparison between SFEs and FEM for 2D simulations.

	One-way mixing			Two-way mixing
	3 × 3 nodes’ SFE	8 × 6 nodes’ SFE	FEM	3 × 3 nodes’ SFE	8 × 6 nodes’ SFE	FEM
DOFs	4,516,806	2,111,706	15,878,646	4,516,806	2,111,706	15,878,646
CPU time	0 h 20 min	0 h 24 min	2 h 30 min	0 h 15 min	0 h 20 min	3 h 30 min