ce3372-2015-3-es7-solution-sketch

# ce3372-2015-3-es7-solution-sketch - CE 3372 Water Systems...

• Homework Help
• 16

This preview shows pages 1–3. Sign up to view the full content.

CE 3372 – Water Systems Design FALL 2015 CE 3372 – Water Systems Design Exercise Set 7 Exercises 1. Water flows at a steady rate of 192 ft 3 /s through a concrete-lined rectangular channel 16 ft wide. Figure 1 is an elevation view sketch The water enters the channel at location 1 and is flowing at normal depth. The water exits over a 3-foot tall weir (assume sharp-crest weir) at location 2. 1 Figure 1: Profile of concrete-lined rectangular channel. i Using the variable-step method, determine the water-surface profile from location 1 to location 2. ii How far upstream from the weir is the flow at normal depth? (i.e. how far upstream is location 1 from location 2. iii What is the average Δ x in your computations if the Δ y is 0 . 1 feet? iv Include sample calculations (if you use a spreadsheet, screen capture a portion of the calculations section). v Include a plot of the water surface elevation, and the channel bottom elevation (a profile plot – like the figure, but with the horizontal distance as the x-axis). 1 The water-surface-profile spreadsheet on the class server can be adapted to this problem, or you can create your own. ES 7 Page 1 of 16

This preview has intentionally blurred sections. Sign up to view the full version.

CE 3372 – Water Systems Design FALL 2015 So build a spreadsheet (and complete the problem) we will need to do the following: (a) Build a tool to take Q, n, Width. (b) Compute normal and critical depth for the channel. (c) Assume depth at weir is weir height+critical depth – use that as starting value for the numerical method. (d) Use variable step method as outlined in class an compute spacing as depth is changed. (e) If there is a sign change, then there is a hydraulic jump. Continue after the jump, but remember to reverse the spacings for the plots. (f) Plot the results. Figure 2 is a spreadsheet that implements the steps above. Notice the hydraulic jump location is detected by the sign change in the step size.
This is the end of the preview. Sign up to access the rest of the document.
• Fall '08
• Staff
• Surface runoff, Runoff model, Water Systems Design

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern