Experiment 3 - Experiment 3 Flow Through a Sluice Gate and...

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Experiment 3 Flow Through a Sluice Gate and Hydraulic Jump Report Written by : Duncan Curtis Email : duncan.m.curtis@gmail.com Date Experiment Completed : March 7, 2012 Date Submitted: March 14, 2012 Group B18 Group Members Duncan Curtis Jonathan Penner Brad Moore
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Summary The purpose of this lab was to see the relationship between different fluid principles. During the experiment measurements of depth and total head were taken in three different areas along a water channel. These measurements were taken at the hydraulic jump, before and after the sluice gate. These measurements were taken for two different flow rates. Velocity was calculated after the sluice gate and from that velocity, flow rate of the water channel. This was compared with the measured value for the flow rate. The flow rate calculated was lower than the flow rate from the experimental values, this occurred for both trials. The measured total head before and after the sluice gate showed an increase in head after it went through the gate. This was the opposite for trial two where the head decreased. Both the calculated and measured height of the water after the hydraulic jump for both flow rates were fairly similar but not exact. Nomenclature P = pressure (Pascal- P qtm = 101325 Pa) z = height (meter) Q= flow rate (meter 3 /second) g = acceleration due to gravity (metre/second 2 -9.81 m/s 2 ) ρ = density (water = 1000 kg/m 3 , air = 1.2 kg/m 3 ) V = velocity (meter/second) A = cross sectional area (meter 2 ) m = mass flow rate (kilogram/second) w = width (meter) F = Force (Newton) H = Total Head (meter) = Change in Flow Analysis Volume Flow Rate The volume flow rate for the experiment can be calculated in two ways. The first way is through using the calibrated V-notch in the collection tank. The equation to calculate the flow rate was: Eq (1) Q=1.38H 2.5 (Where H is the height of the V-notch) The second method is using the velocity and the area at a specific portion of the water channel. The equation to calculate flow rate this way was: Eq (2) Q=VA
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Before the flow rate can be calculated with equation 2, the velocity has to be calculated. This is done through Bernoulli’s equation. Steady state is assumes so that the flow rate
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This note was uploaded on 03/15/2012 for the course MAAE 2300 taught by Professor Gaydos during the Spring '08 term at Carleton CA.

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Experiment 3 - Experiment 3 Flow Through a Sluice Gate and...

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