SLUICE GATE EXPERIMENT

Flow under a gate is also a RVF$.$ It must be observed that Energy is conserved. The water

profile is as depicted below.

Report should include the following using $q$ and the measured values of depths $y_1$ and $y_2.$

The plots of Specific Energy $(y-E)$ and Specific Force $(y-\frac{F}{b})$ for the valid q$.$ Start

with $y=0\mathrm{.}005m$ to determine respective values of $E$ and $\frac{F}{b}$ and carry on with

increments of $0\mathrm{.}005$ until $y=12cm.$

Measure $y_1$ and $y_2$

Determine $E_1$ and $E_2$

Determine $\frac{F_1}{b}$ and $\frac{F_2}{b}$

Mark $(y_1,E_1)$ and $(y_2,E_2)$ on the plot of the Specific Energy curve drawn at step $1.$

Comment on the positions of the marks.

Mark $\{$:$(y_1,\frac{F_1}{b}))$ and $(y_2,\frac{F_2}{b})$ on the plot of the Specific Force curve drawn at step $1.$

Comment on the positions of the marks.

Theoretically there should be no energy loss between sections $1$ and $2.$ If the difference

between calculated values of $E1$ and E$2,$ in step $3,$ is not equal to zero justify your

findings.

Determine the net force acting on the gate using $F\frac{1}{b}$ and $F\frac{2}{b}$ determined in step $4.$

Compare this value with the theoretical value determined using Momentum Conservation

Equation.

$b=7\mathrm{.}7cm$

$y_1=53\mathrm{.}3mm$

$y_2=8\mathrm{.}9mm$

$Q=5\mathrm{.}789{10}^{-4}\frac{m^3}{s}$