3628846 Computer Lab Report PDF

Preview

Summary

CIVE1181 Water Engineering (ComputerLab)Water Distribution Network AnalysisName: Hadeel AleisaStudent number: sContentsINTRODUCTION....................................................................................................................................PURPOSE.................................

Description

CIVE 1181 Water Engineering Computer Lab

CIVE1181 Water Engineering (Computer Lab) Water Distribution Network Analysis Name: Hadeel Aleisa Student number: s3628846

CIVE 1181 Water Engineering Computer Lab

Contents INTRODUCTION....................................................................................................................................1 PURPOSE...............................................................................................................................................1 METHOD................................................................................................................................................1 DISCUSSION ON RESULTS.......................................................................................................................1

CIVE 1181 Water Engineering Computer Lab

INTRODUCTION A local water company undertaking the task of supplying water to a locality has decided to use RMIT WaterGEMS specialist to assist them with the task. Some information for designing and analysis of the water pipe system is provided. This information includes:       

Water surface at the reservoir (R-1) is 70 m Tank used is circular with a diameter of 15 m Minimum elevation of the tank is 99 m Maximum elevation is 104 m Initial elevation is 103.4 m The base elevation is 98 m with an inactive volume of 10 m 3 Elevation of pump (PMP-1) is 70 m and the pump is initially on

PURPOSE The WaterGEMS specialist is required to design and analyse the pipe network ensuring the following:    

Tank does not overflow by managing the times at which the pump is switched on Pump is provided with sufficient head Ensure flow calculations are accurate for steady flow Calculation of age of water

METHOD Using WaterGEMS software -

Follow Instructions provided on sheet

DISCUSSION ON RESULTS 1. Flex Tables of Pipes and Junctions after Model Run Pipes: (Click on ‘Pipe Table’ on Flex Table Tool bar. Take a screen shot of Flex Table of pipes after model run)

1|P ag e

CIVE 1181 Water Engineering Computer Lab Detect whether any difference between input and output. That could be, ‘In Input Flex table we didn’t have column for head loss gradient(m/m), but in output/result table we have those. Junctions: (Click on ‘Junction Table’ on Flex Table Tool bar. Take a screen shot of Flex Table of junctions after model run)

Detect whether any difference between input and output. That could be, ‘In Input Flex table we didn’t have column for hydraulic grade(m), but in output/result table we have those.

2. Graphical representation of Tank In-flow, Out-flow and Percent Full results and timing of highest and lowest Percent Full for Tank (for 24 hr simulation) In-Flow in Tank (Select Tank (T-1) on drawing screen, right click on it, click on ‘Graph’. Select Scenario ‘Base’, Element ‘Tank (T-1)’, Result ‘Flow (In net’ (under Fields). Take a screen shot of the graph and paste it.

2|P ag e

CIVE 1181 Water Engineering Computer Lab

Out-Flow in Tank (Select Tank (T-1) on drawing screen, right click on it, click on ‘Graph’. Select Scenario ‘Base’, Element ‘Tank (T-1)’, Result ‘Flow (Out net’ (under Fields). Take a screen shot of the graph and paste it.

Percent Full Graph (Select Tank (T-1) on drawing screen, right click on it, click on ‘Graph’. Select Scenario ‘Base’, Element ‘Tank (T-1)’, Result ‘Percent Full’ (under Fields). Take a screen shot of the graph and paste it.

3|P ag e

CIVE 1181 Water Engineering Computer Lab

Timing of highest and lowest Percent Full in the tank Generate Percent Full graph following the steps mentioned above. Click on ‘data’ page, right on Percenta Full filed and sort it as Ascending/descending order and the time for highest and lowest Percent Full and write those in the report.

at 0.4hours the percentage was 90.2% that was the percentage at that time, and at 19hours the percentage was the lowest recorded 6.5%

4|P ag e

CIVE 1181 Water Engineering Computer Lab

3. Graphical representation of water flow and head from the pum Water Flow from Pump (Select Pump (PMP-1) on drawing screen, right click on it, click on ‘Graph Element ‘Pump (PMP-1)’, Result ‘Flow (Total)’ (under Fields).

Find the timing of highest and lowest flow following similar procedure mentioned in Q2. Write the timing 2,816 L/min was the highest flow at the timing of 18 hours, and 0 was the lowest flow at the timing between 0.4hrs and 8hrs.

Pump Head: (Select Pump (PMP-1) on drawing screen, right click on it, click on ‘Graph’. Select Scenario ‘Base’, Element ‘Pump (PMP-1)’, Result ‘Pump Head’ (under Fields). Take a screen shot of the graph and paste it.

5|P ag e

CIVE 1181 Water Engineering Computer Lab

Find the timing of highest and lowest pump head following similar procedure mentioned in Q2. Write the timing 37.20 m was the highest pump head at the timing of 0hrs, and 0 was the lowest pump head at the timing between 0.4hrs and 8hrs.

4. Graphical representation of water demand and pressure with respect to time in junction J2 Junction 2: (Select Junction 2 on drawing screen, right click on it, click on ‘Graph’. Select Scenario ‘Base’, Element ‘Junction (J-2)’, Result ‘Demand’ and ‘Pressure’ (under Fields). Take a screen shot of the graph and paste it.

6|P ag e

CIVE 1181 Water Engineering Computer Lab Make comments on relation between pressure variation and demand. it shows that one line is higher and the other is lo lower the pressure is and vice versa.

d the

5. Flow directions in pipes at every 4 hours (Gerenate Percent Full graph of Tank for Base desired times (0, 4, 8, 12, 16, 20, 24 hrs). Take specific time.

e at for

Crop the pipe layout part and paste it.

Hour-0 Hour-4

Hour-8

Hour-12

7|P ag e

CIVE 1181 Water Engineering Computer Lab

Hour-16

Hour-20

Hour-24

8|P ag e

CIVE 1181 Water Engineering Computer Lab

Identify the time period (from the above figures) when both pump and tank are feeding water to the pipe network. At the time 16hrs both pump and tank are feeding water to the pipe network.

6. Calculate the incoming water for a particular time (say, at 8 hr) at a particular junction (say, at J4) and check whether it matches with the outgoing water and water consumption at that junction. (Select a Junction J4, calculate in-flow, outflow and junction demand at 8 hr. Make a water balance [i.e. Inflow (through pipe) = demand (at junction) + Outflow (through pipe)]. Junction demand = 307 L/min Outflow = p6+p7=260+485= 745 L/min P3 (inflow) = 1053 L/min Inflow (through pipe) = 307 + 745 = 1052 ≠ 1053 Water is not balance because the inflow does not equal the outflow at that junction

7. Water age in Tank and Junctions J2 and J9 Age of Water in Tank (Select Tank on drawing screen, right click on it, click on ‘Graph’. Select Scenario ‘Age Analysis’, Element ‘Tank (T-1)’, Results (Water Quality) as ‘Age’ (under Fields). Find the value of highest age from ‘data’ page. 9|P ag e

CIVE 1181 Water Engineering Computer Lab Go back to ‘graph’ page, take a scree shot of the graph and paste it.

the highest age value is 35.710hrs Age of Water in Juntion 2 (Select Junction 2 on drawing screen, right click on it, click on ‘Graph’. Select Scenario ‘Age Analysis’, Element ‘Junctions (J-2)’, Results (Water Quality) as ‘Age’ (under Fields). Find the value of highest age from ‘data’ page. Go back to ‘graph’ page, take a scree shot of the graph and paste it.

the highest age value is 27.909hrs

10 | P a g e

CIVE 1181 Water Engineering Computer Lab

Age of Water in Juntion 9 (Select Junction 9 on drawing screen, right click on it, click on ‘Graph’. Select Scenario ‘Age Analysis’, Element ‘Junctions (J-9)’, Results (Water Quality) as ‘Age’ (under Fields). Find the value of highest age from ‘data’ page. Go back to ‘graph’ page, take a scree shot of the graph and paste it.

the highest age value is 28.275hrs Compare among ages of water in Tank, Junction 2 and Junction 9 and find out which has highest value. The element (Tank/Junction2/ Junction 9) with highest value of age has oldest water.

Highest tank age = 35.710 hrs Highest J2 age = 27.909 hrs Highest J9 age =28.275 hrs Comparing these three values it is clear that tank has the oldest water

11 | P a g e...