Spline-Interpolation-Based FFT Approach to Fast Simulation of Multivariate Stochastic Processes

Table 1

Comparisons among several different schemes for wind velocity simulation.

Cases	Algorithms	Dividing number of frequency (𝑁)	Number of points (𝑛)	𝑇 (sec)	Elapsed time (min)
Case 1	SFFT	8192	100	8192	10.2
	FFT	8192	100	8192	215.9
Case 2	SFFT	2048	50	2048	0.5
	FFT	2048	50	2048	5.9