Question

In: Civil Engineering

A 90o v-notch weir is used to measure discharge flow rate. A head (H) of 6...

A 90o v-notch weir is used to measure discharge flow rate. A head (H) of 6 inches is measured behind the weir. Assume the following:

  • Weir equation is Q = 2.5H2.5 (Q in cfs and H in feet)

  • 1 cfs = 450 gpm

  • a) Estimate discharge flow rate in gallons per minute (gpm)

  • b) Briefly describe hydraulic principle of open channel flow measurement

Please show all work. Thank you so much in advance!

Solutions

Expert Solution


Related Solutions

Is there any reason for why a V-notch weir equation for flow rate will give much...
Is there any reason for why a V-notch weir equation for flow rate will give much different values than the measured flow rate values in an experiment? The professor says this is intentional, and to find the reason why this is. This is the V-notch equation mentioned: Q=(8/15)(Cd)sqrt(2g)tan(theta/2) * H^2.5 The weir used had an angle of 60 degrees and the given discharge coefficient was 0.5767. It should also be mentioned that using a power regression method on the measured...
For Broad crested weir Experiment: i. Does the magnitude of the flow-rate affect the discharge coefficient...
For Broad crested weir Experiment: i. Does the magnitude of the flow-rate affect the discharge coefficient Cd? ii. Does Cd increase or decrease with increasing flow-rate? iii. What is the pattern of the water as it passes over the weir? iv. Would you expect the length of the weir crest to affect the discharge coefficient Cd? v. What is the effect of drowning the weir (increasing the downstream depth)?
In discharge over V-notch experiment, calibration curve (using log Q vs log H) is plotted. How...
In discharge over V-notch experiment, calibration curve (using log Q vs log H) is plotted. How would you interpret results which, when plotted logarithmically, fall on a line which is not straight but slightly curved? and, What are the effects of a change in the V-notch angle on the discharge equation and the accuracy of flow measurement?
An orifice meter is used to measure flow rate of liquid in pipe shows a pressure...
An orifice meter is used to measure flow rate of liquid in pipe shows a pressure difference of ' x ' m of water column when the flow rate is Q If flow rate is doubled then what is delta P?
A 75‐mm‐diameter orifice with D and D/2 taps is used to measure the flow rate of...
A 75‐mm‐diameter orifice with D and D/2 taps is used to measure the flow rate of 65°C water in a 150‐mm‐ID pipe. Determine the pressure difference for a flow rate of 20 L/s
how does the rotameter (flow meter) measure volumetric flow rate of air in the system?explain using...
how does the rotameter (flow meter) measure volumetric flow rate of air in the system?explain using a digram and 2-3 sentence discussion of the forces acting on the rotameter ball.
An approach to a signalized intersection has a saturation flow rate of 1800 veh/h. At the...
An approach to a signalized intersection has a saturation flow rate of 1800 veh/h. At the beginning of an effective red, there are 6 vehicles in queue and vehicles arrive at a rate of 900 veh/h. The signal has a 60-second cycle with 25 seconds of effective red. What is the total vehicle delay after one cycle?
What data is required to generate a pump curve (head versus flow rate and pump efficiency...
What data is required to generate a pump curve (head versus flow rate and pump efficiency versus flow rate) at different speeds ofa centrifugal pump?
1. Carefully define the unemployment rate. How is the unemployment rate used to measure the economy’s...
1. Carefully define the unemployment rate. How is the unemployment rate used to measure the economy’s performance? What flaws and/or pitfalls are there in the measure?
1. Carefully define the unemployment rate. How is the unemployment rate used to measure the economy’s...
1. Carefully define the unemployment rate. How is the unemployment rate used to measure the economy’s performance? What flaws and/or pitfalls are there in the measure?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT