A Study of Nonstationary Wind Effects on a Full-Scale Large Cooling Tower Using Empirical Mode Decomposition

Table 1

Mean wind speed updating for thermal convection effect.

Date	Nov. 28	Nov. 29	Nov. 30	Dec. 1	Dec. 2	Dec. 3	Dec. 4
(calculated using the logarithmic law formula)	0.19	0.58	0.37	0.09	0.18	0.33	0.29
(measured in the field)	285.15	Unknown	279.15	Unknown	Unknown	Unknown	Unknown
	−3.87	—	−30.27	—	—	—	—
	3.4383	—	1.964	—	—	—	—
m/s	2.30	—	5.97	—	—	—	—
Date	Dec. 5	Dec. 6	Dec. 8	Dec. 9	Dec. 11	Dec. 12
/m/s	0.44	0.40	0.65	0.50	0.42	0.20
	282.15	281.65	277.15	276.65	280.65	278.15
	−49.72	−38.02	−161.09	−73.82	−43.41	−5.02
	1.652	1.8182	1.0094	1.4197	1.7352	3.2399
/m/s	7.36	6.57	12.00	8.74	6.96	2.63