Analysis of Hydraulic characteristics of cutthroat flume

Abstract EN

The aim of this research is to calculate experimentally the coefficient of discharge for cutthroat flume.

Nine models were contracted with different angles (α = 30°, 45°, 60°), for each angle, Three ratios of width of cutthroat to width of channel Bc / B were used (Bc / B % = 20, 33.3, 50 ); the slopes of the channel were changed five times (S = 0.0, 0.001, 0.002, 0.003, 0.004) for each ratio.

The results show that the coefficient of discharge Cd increases as the slope S increases, and as the ratio Bc / B, is the ratio of head of water through cutthroat to width of cutthroat hc / Bc, critical depth through cutthroat to width of cutthroat yc / Bc increases, and for a constant ratio Bc / / B, Cd increases as α increase.

An empirical model was predicted to calculate the Cd in terms of the perimeters (S, hc / Bc, yc / Bc, Bc / B, and α), finally the water surface profiles were drawn and there were in a continuous trend.