Hydraulic Characteristics and Numerical Simulation of the Entrance Section of Ladder-Shaped Spillway

Table 3

The velocity distribution at the entrance section.

Pile number	Design flood conditions			Collated flood conditions
	Experimental value	Simulation value	Error	Experimental value	Simulation value	Error
7 m ahead of weir	1.21	1.13	0.08	0.56	0.5	0.06
The top of weir	5.48	5.32	0.16	5.22	5.62	-0.4
	2.02	2.10	-0.08	0.45	0.39	0.06
	2.59	2.66	-0.07	1.12	1.05	0.07
	4.02	3.92	0.10	1.82	1.91	-0.09