Pipe Network Computing Assignment

Submit the MS Excel spreadsheet for Problem 2 to D2L folder in file with the following name: CIVE_3833_Pipe_Network__. Also submit the project files for the base model from WaterCad for Problem 3.

1. Repeat the WaterCAD example from the notes that was performed in class on your own. After running the simulation, print out a schematic of the diagram, a report for the pipe flex tables showing the pipe flow rates, and a report for the junction flex tables showing the pressures at each node.

2. Solve for the flows and pressure throughout the system in Problem 4.4.10 from Fundamentals of Hydraulic Engineering Systems, Fifth Edition. Use the Darcy-Weisbach Equation to estimate friction losses. Water enters the system from a tower at point A at an elevation of 125 m (use this is the basis to determine pressures in the system). The elevations of the other junctions are summarized in the table below. Write out your assumptions and equations on paper, do one iteration by hand, and then set up and perform calculations of the flow (including correction of the friction factors) in MS Excel. Print out the results and submit the file to the D2L folder.

3. Repeat (2) using WaterCAD. After running the simulation, print out a schematic of the model, a report for the pipe flex tables showing flow rates, and a report for the junction flex tables showing the pressures. Save the project file and submit it to D2L. Where does the pressure drop below the 200 kPa standard in the distribution system? Compare three different approaches to increase the pressure to the 200 kPa minimum at the critical point: (a) increasing the water tower height; (b) increasing the pipe diameter somewhere in the system (c) decreasing the friction factors in the system (i.e., using a less rough material). Summarize the results (required changes to the system) for (a), (b), and (c). What approach would you recommend to mitigate pressure issues?

Junction Elevations for Problem 4.4.10

Using computer software (e.g., EPANET or your own spreadsheet program), determine the flow rate and head loss in each cast-iron pipe in the network shown in Figure P4.4.10. The demands on the system are at junctions C (0.030 m³/s), D (0.250 m³/s), and H (0.120 m³/s). Water enters at junctions A (0.100 m³/s) and F (0.300 m³/s). The lengths and diameters of the pipes are provided in the table below. As with all computer programs, the results should be checked for accuracy. Spot check a few junctions to see if there is mass balance. Check one or two loops to see if the energy balances.

Attachment:- Assignment Files.rar