The Effect of Total Solids on the Discharge Coefficient of Spillway, Broad crested weir and Crump weir

Abstract

In this experimental work the efforts was devote to study the effect of different amounts of total solids (TS) on the flow rate pattern and the coefficient of discharge in open channels and water treatment plant for ogee spillway, broad crested weir and crump weir. A total of ten experiments were done on each type of weir, the first experiment was of a tap water while the other nine had different values of TS varying from 620 to 1121 ppm. In each experiment eight values of discharges were taken. The results indicate that the discharge coefficient Cd varies with the value of the total solids TS. For viscous flow, at initial increasing of (TS), the value of Cd was greater than the corresponding value of the tap water. When the value of TS is greater than (600,750 &800) ppm, the values of Cd decrease with the continues increasing of TS for spillway, crump weir and broad crested weir respectively.