Venturi Tube Experiment

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Venturi tube experiment The objective of this experiment is ; 1. to compare the observed pressure profile of water flowing through a Venturi tube with that predicted by the Bernoulli’s theorem 2. to calibrate the Venturi tube for use as a flow measurement device, and to determine the coefficient of discharge, Cd for this setup Typically, Bernoulli’s equation is an ideal equation whereby it only works on frictionless (zero viscosity) flowing liquids. The evidence is from the result obtained. Theoretically, the values of total head must remain constant/still. However, the results obtained shows that it decreases instead of remaining constant/still. The value of Cd obtained was 0.77; which is not very accurate but acceptable. The literature/theoretical value of Cd is within the range of 0.95 to 0.99. The experimental results obtained differ from the literature value because there were several discrepancies such as human errors (parallax error) and apparatus errors (zero error). The results can be further improved by repeating the experiment a few times and taking the average. 2. APPARATUS No. | Apparatus | Description | 1 | Hydraulic bench | This contains the sump (a reservoir of water), which supplies water to the experimental equipment mounted on it, with the help of a pump with resides in the bench. This pump sucks water from the sump and delivers it to the experimental equipment. The bench is used to measure the flow rate of the water flowing through the equipment. | 2 | Digital stop watch | Used to measure the time while collecting water samples in order to calculate the flow rate. | 3 | Measuring cylinder | Used to collect water samples under time intervals measured by the stopwatch. | 4 | Manometer | Used to measure the pressure at different positions along the venture tube. An additional manometer is connected to a total

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