# Bernoullis Apparatus

This experiment is carried out to investigate the validity of

Bernoulli’s theorem when appliedto the steady flow of water in tapered duct and to measure the flow rates and both static andtotal pressure heads in a rigid convergent/divergent tube of known geometry for a range of steady flow rates. The

Bernoulli’s theorem

(

Bernoulli’s t heorem, 2011) relates the pressure,velocity, and elevation in a moving fluid (liquid or gas), the compressibility and viscosity(internal friction)of which are negligible and the flow of which is steady, or laminar. In order to demonstrate the Bernoulli’s theorem

, the F1-15

Bernoulli’s Apparatus Test Equipment isused in this experiment. The pressure difference taken is from h

1

-h

5

where the values of h

1

-h

5

are determined to be 50m, 100m and 150m respectively. The time to collect 0.003m

3

water inthe tank was measured. Lastly the flow rate, velocity, dynamic head, and total head werecalculated using the data of the results and from the data given for both convergent anddivergent flow. Based on the results taken, it has been analysed that the velocity of the fluidis increase when it flowing from a wider to narrower tube regardless the type of flow andpressure different. The velocity is increased as the pressure different is increased for bothtypes of flow. Once the velocity of fluid is increased thus the dynamic head is also increased.Then, the total head value for convergent flow is the highest at h

1

and the lowest at h

5

whilethe opposite situation is happened in divergent