Lab 3 Basic Hydraulics
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School
California Polytechnic State University, San Luis Obispo *
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Course
340
Subject
English
Date
Apr 3, 2024
Type
Pages
6
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BRAE 340 Irrigation Water Management Page 1 BRAE 340 - Irrigation Water Management Lab – Basic Pipeline Hydraulics Name: Date: BRAE 340 Lab: Day: ____________ Time: ___________ Section #: ________ Names of Others in Your Discussion Group: ______________________________________ ______________________________________ ______________________________________ ______________________________________ ______________________________________ ______________________________________
BRAE 340 Irrigation Water Management Page 2 BRAE 340 - Irrigation Water Management Basic Pipeline Hydraulics Introduction The goal of this lab is to introduce you to basic pipeline hydraulics. There are three components, which are pressure, elevation, and velocity head. The sum of these three energy components can be graphically displayed and are referred to as a Hydraulic Grade Line (HGL). We will do this in lab. We will also learn how pressure on an orifice (sprinkler nozzle) affects the flow rate. Today’s exercise will demonstrate the relationship between elevation, pressure, and loss (primarily friction) due to flow rate. The exercise will also demonstrate how pressure affects the flow rate from a sprinkler nozzle. A demonstration of water hammer will also be conducted. Data Analysis Using the data collected in lab, complete the tables provided below and plot the data on the graph. Discussion Questions Discuss the questions among yourselves, taking notes as necessary to remember the key points of the discussion. Write your own answers to the questions in the space provided. Lab Report • Completed data collection • Graph of pressures and elevation • Answers to all questions based on your notes Grades
• Participation, contribution and discussion from field exercise, 15% • Completed Data Collection and Analysis, 55% • Written answers to questions, 30%
BRAE 340 Irrigation Water Management Page 3 Field Work Procedure
Part 1 – Hydraulic Grade Lines (HGL) 1.
Divide into about six groups. 2.
Using the hydraulic demonstration area at the Water Resources Facility (WRF), collect the data required to complete the table below and plot the data on the graph. You will need to gather the data from the other groups to complete this portion of the lab. 3.
Determine the length between each of the site tubes. 4.
Run the system at four different conditions
: a.
Static b.
Low Flow c.
High Flow d.
Flow from the Mid-Point (middle valve) (
15 pts
) Height of Water/Pressure (mm) Standpipe 1 2 3 4 5 6 Pipe Length (ft) 0 Static Test Low Flow Test High Flow Test Middle Valve Test (
5 pts
)
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