Study on Relationship between Lateral Over Fow and Its location of Lateral Weir in Curved Channel

The characteristic of the lateral over flow was investigated with the curved channel which has the constant radius of curvature R. the curved channels with R=0.50m and 7.0m were used. The main results obtained from these experiments are as flows; (1) The lateral over flow discharge is proportional to the power of the over flow depth. The power is around 3/2 if the lateral wire is set near the entrance of the curve channel. The value of the power decrease as the location of the lateral wire is installed downward. (2) the ratio of the lateral over flow discharge with the inflow discharge does not well depend on the location of the weir from the entrance to the middle part of the channel. In downstream wise from the middle the ra-tio decreases. (3) The ratio of R=0.50m is larger than that of R=0.70m. (3) We applied the lateral dis-charge formulation we proposed in 2017 to the experimental data. It has a good accuracy except near the entrance and the exit of the curved channel.