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CE 3305 Engineering Fluid Mechanics
Summer 2022 Computational Hydraulics Exercise Set 2

LAST NAME, FIRST NAME

R00000000

Purpose :

Apply computational thinking (ENGR 1330) principles and hydraulics/fluid mechanics principles to produce a plot of water surface in an open channel.

Assessment Criteria :

Completion, plausible solutions, use JupyterLab as a calculator.

Problem 1.

Water flows at a steady rate of 192 $\frac{ft^3}{s}$ through a concrete-lined rectangular channel 16 ft wide as depicted in Figure 1. Water enters the 0.35% sloped channel ($S_0$ = 0.0035) at location 1 and is flowing at 110% normal depth ($1.1 \times y_n$). The water exits over a 3-foot tall weir (assume sharp-crest weir) at location 2.1

Figure 1. Concrete-lined rectangular channel

Find:

  • Normal depth for the channel.
  • Critical depth for the channel.
  • Pool depth just upstream of the weir. (Hint: Add the critical depth to the weir height as an approximation to the pool depth)
  • Plot the water surface profile for the channel from location 1 to location 2
  • Estimate the distance upstream from the weir to location 1
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# sketch here
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# list known quantities
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# list unknown quantities
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# governing principles (fluid mechanics)
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# solution (using JupyterLab notebook) (computational thinking/algorithm development)
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# discussion