Docsity
Docsity

Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity


Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan


Guidelines and tips
Guidelines and tips

Group Assignment on Experiment Design in Laboratory | CIVL 130, Lab Reports of Fluid Mechanics

Material Type: Lab; Class: Fluid Mechanics I; Subject: Civil Engineering; University: University of the Pacific; Term: Unknown 1989;

Typology: Lab Reports

Pre 2010

Uploaded on 08/18/2009

koofers-user-ni5
koofers-user-ni5 🇺🇸

1

(1)

10 documents

1 / 6

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
CIVL130 - FLUID MECHAN ICS
LAB: EXPERIMENT DESIGN
GROUP ASSIGNMENT
OBJECTIVES
The objectives of this assignment are:
- to develop a laboratory experiment to demonstrate or verify fluid mechanics theory.
- to develop the tools including the lab handout, experiment set-up, and data analysis spreadsheet,
necessary to perform a complete lab.
REQUIRED TAS KS
1. Select an experiment topic to test, demonstrate, or verify an area of fluid mechanics theory. The selected
area may be based on the topics given below or one that is discussed with and approved by the instructor.
2. Discuss the selected topic with the instructor. Each topic may only be performed by one group in each
lab period. Topics will be assigned/approved on a first come-first served basis, so choose early!
3. Develop an experiment for the selected topic
4. Develop and build the set-up required to run the experiment.
5. Test your experiment set-up systematically with a range of conditions.
6. Prepare a complete lab handout, following the format used for lab handouts in CIVL 130. The lab
handout must include the following sections:
Experiment Title
Purpose - Objectives of the experiment
Theory - Include:
a. A general description of the experiment and set up. Applications of the experimental results.
b. Clear drawing of the experiment set-up with captions and all parts clearly labeled.
c. Equations showing the fundamental theory, and manipulation of the equations to the form that
will be used in lab calculations.
d. References used for the theory.
Procedure - Step-by-step procedure required to run the experiment. Make sure the procedure is tested
using the steps written! Include detailed information such as number of valve turns required
for each flowrate, how to vary the experiment for each trial, etc.
Calculation and Presentation of Results - Specify step-by-step calculations required to determine
key parameters, e.g., flowrate, head loss, Reynolds number. Include requirements for any
graphs in this section. You must include at least one graph.
Discussion - Develop at least 6 relevant questions that must be answered based on theory, experiment
observations, and graphical results. The questions must require analysis of data or theory;
trivial questions like "What is the flowrate?" are not acceptable. Provide answers with the
"Instructor's Notes".
7. Prepare a spreadsheet template and complete it; similar to the ones you have used for all labs this
semester. The template, complete with your test data and results, must lead the user through all required
calculations. Include all appropriate graphs.
8. Prepare a set of 'Instructor's Notes' on how to set up the experiment apparatus, pitfalls, special
instructions for equipment use, a full derivation of all equations (include every step), and a discussion of
expected results (e.g., friction factor for PVC should be lower than the friction factor for copper).
(continued on next page)
Instructor's notes (continued)
CIVL 130 - FLUID MECHANICS LAB DE SIGN - 1 UNIVERSITY OF THE PACIFIC
pf3
pf4
pf5

Partial preview of the text

Download Group Assignment on Experiment Design in Laboratory | CIVL 130 and more Lab Reports Fluid Mechanics in PDF only on Docsity!

LAB: EXPERIMENT DESIGN

GROUP ASSIGNMENT

OBJECTIVES

The objectives of this assignment are:

  • to develop a laboratory experiment to demonstrate or verify fluid mechanics theory.
  • to develop the tools including the lab handout, experiment set-up, and data analysis spreadsheet, necessary to perform a complete lab. REQUIRED TASKS
  1. Select an experiment topic to test, demonstrate, or verify an area of fluid mechanics theory. The selected area may be based on the topics given below or one that is discussed with and approved by the instructor.
  2. Discuss the selected topic with the instructor. Each topic may only be performed by one group in each lab period. Topics will be assigned/approved on a first come-first served basis, so choose early!
  3. Develop an experiment for the selected topic
  4. Develop and build the set-up required to run the experiment.
  5. Test your experiment set-up systematically with a range of conditions.
  6. Prepare a complete lab handout , following the format used for lab handouts in CIVL 130. The lab handout must include the following sections: Experiment Title Purpose - Objectives of the experiment Theory - Include: a. A general description of the experiment and set up. Applications of the experimental results. b. Clear drawing of the experiment set-up with captions and all parts clearly labeled. c. Equations showing the fundamental theory, and manipulation of the equations to the form that will be used in lab calculations. d. References used for the theory. Procedure - Step-by-step procedure required to run the experiment. Make sure the procedure is tested using the steps written! Include detailed information such as number of valve turns required for each flowrate, how to vary the experiment for each trial, etc. Calculation and Presentation of Results - Specify step-by-step calculations required to determine key parameters, e.g., flowrate, head loss, Reynolds number. Include requirements for any graphs in this section. You must include at least one graph. Discussion - Develop at least 6 relevant questions that must be answered based on theory, experiment observations, and graphical results. The questions must require analysis of data or theory; trivial questions like "What is the flowrate?" are not acceptable. Provide answers with the "Instructor's Notes".
  7. Prepare a spreadsheet template and complete it; similar to the ones you have used for all labs this semester. The template, complete with your test data and results, must lead the user through all required calculations. Include all appropriate graphs.
  8. Prepare a set of 'Instructor's Notes' on how to set up the experiment apparatus, pitfalls, special instructions for equipment use, a full derivation of all equations (include every step), and a discussion of expected results (e.g., friction factor for PVC should be lower than the friction factor for copper). (continued on next page) Instructor's notes (continued)

Provide answers to the "Discussion Questions" that are not directly related to the data analysis. e.g., any questions that ask about applications, expected results (if not already discussed), etc. Instructor's notes MUST include an additional section, labeled ' Improvements and Suggested Changes ', in which any suggested changes to the lab design, theory, implementation, or experimental procedure must be noted. **** Note:** The handout, completed spreadsheet, and instructor's notes must be submitted in hardcopy format and sent to the instructor by e-mail. When submitting the electronic copy, please label it with your name(s) and experiment, e.g., "Smith Jones Pipe Friction Spreadsheet.xls." You may use the spreadsheet and handouts made available on the course web site as templates.

  1. Make a preliminary presentation (Oral Progress Report) - Each group will present the experiment to the class in understandable terms such that the students will know exactly what is being done and how. Questions, comments and constructive peer critiques are highly encouraged and required - this is your chance to help your classmates to do a better job! Power point must be used. Save your files on a jump drive or e-mail to the instructor no later than 24 hours before the presentation time. 5-6 minute Presentation, plus question and answer period. Must include at least the following: - Experiment Title, group member names - Objective(s) - Experiment Setup (clear figure), including variables that will be measured - Theory - Brief - mainly showing where the equations start and the final form that will be used to calculate the important values - Experiment Conditions: for example, in the pipe friction lab, the following conditions were used: 4 pipe sizes: 1" Cu, 1" Fe, 2.5" Fe, 3" PVC Different flowrates (5 - 6 trials) for each pipe, from maximum to almost zero flowrate. - Presentation of results: Identify how results will be presented, i.e., what graphs will be generated. - Progress to date
  2. Make a final presentation - Each group will make a formal presentation to discuss objectives, theory, setup, conditions, results, and conclusions of the experiment. Presentations and demonstrations will be held during regular lab meeting times, and will be presented in the fluids lab. Please remember that the purpose of the presentation is to inform colleagues about a topic with which they may not be familiar. Therefore, explain the topic thoroughly. The entire presentation plus demonstration of the lab must be between 15 and 20 minutes in length. All team members must present part of the talk. The order of presentations will be determined by the instructor. All students are expected to attend all presentations in their lab section. Presentations must be prepared using PowerPoint. The presentation must include the following components:  Title Page: Lab Title, Project Team Names, Date & Place  Outline of Presentation: 6 – 8 Bullets  Introduction/Background: Fundamentals/Background/Application of the experiment  Objectives: Purpose(s) of the Experiment  Experiment Set up: This must be a clear and simple figure of the set up showing main components and main variables measured. If appropriate, for example in the head loss experiments, indicate pressure head, velocity head, and change in EGL. A scanned-in neat and professional hand drawing is acceptable. Variables must be clearly shown.  Theory: Beginning with the fundamental equation(s), e.g., Bernoulli's equation, momentum, etc., show the main steps required to get the equation(s) into its final form. The final form of the

Select a topic from the list below, or develop a topic within your lab group. All topics must be discussed with the instructor. Some topics may require additional work, as requested by the instructor.

  1. Weirs - Weirs are over-flow devices used to measure flow in open channels. Weirs must be calibrated to account for losses associated with flow over the weir.
  2. Hydraulic Jump - A hydraulic jump occurs when downstream flow is obstructed. A hydraulic jump is sometimes used to dissipate flow energy. Must include an element of flow verification.
  3. Bridge Piers - Measurement of pressure, velocity around the pier, and head loss along the pier can assist in design of more streamlined and stable structures.
  4. Local Losses - Local losses are energy losses associated with an obstruction to flow, change in pipe cross- section, change in pipe characteristics, or change in flow direction.
  5. Head losses in pipe networks - Pipe networks are necessary for industrial, agricultural, municipal water supply and return systems. Losses must be accounted for in design of pipe networks.
  6. Drag on an Object - Friction along the surface of an object produces drag forces opposite to the direction of flow. The drag force is a function of flow characteristics and physical characteristics of the object.
  7. Pumps in series or parallel - Head and flowrate can be altered in a system by configuration of pumps in series or parallel. Pump efficiency must be calculated.
  8. Fluid Sculptures / Water design - Sculptures (fountains, jets, droplets, etc) are used in parks, buildings, and other public locations as decorative/aesthetic pieces. Design and testing of any piping, pumps, nozzles, etc used must consider losses, pump sizing and other hydraulic factors.
  9. Head loss in vegetated channels - Plants, reeds, and attached algae in natural channels contribute to head loss. Losses can be significant, depending on the size, shape, orientation, and rigidity of the plants.
  10. Sluice Gate Calibration - A sluice gate is an underflow device used to control water surface elevations upstream and velocity downstream. When calibrated, a sluice gate can also be used as a flow measuring device. Must include an element of flow verification.
  11. Orifice Plate Meter - A flow measurement device that must be calibrated prior to use.
  12. Similitude - Scale models can be used to predict behavior of real systems.
  13. Flow rates in natural channels – Flow rates in natural systems can be measured using different field equipment. A rating curve can be developed to predict flow rate as a function of depth.
  14. Sustainable pump systems for water delivery – Standard pumps are not useable or sustainable in developing countries. Hand-cranked, hydraulic ram, or other pump systems must be developed to operate without a reliance on electrical power.
  15. Other course topics - Buoyancy, Momentum, Conservation of Energy; Experiments cannot be similar to experiments conducted in lab or demonstrations conducted in class. Sample projects are given at the end of each chapter in the text.

LAB EXPERIMENT DESIGN PRELIMINARY PRESENTATION

Group Members: Grade: / 5

Title Page

Objectives

Experiment Set up

Theory

Experiment Conditions

Progress to Date

Clarity of Presentation

Preparedness

Overall Quality

LAB EXPERIMENT DESIGN PRESENTATION - EVALUATION SHEET

Group Members: Grade: / 10

Title Page

Outline of Presentation

Introduction/Background

Objectives

Experiment Set up

Theory

Procedure

Results/Findings (Including tables and graphs)

- Explanations

- Experimental Errors

Conclusions/Summary

Improvements/ recommendations

Lab Demonstration

Clarity of Presentation

Preparedness

Overall Quality

LAB EXPERIMENT DESIGN - PEER EVALUATION

Evaluate other teams on the following criteria using a scale of 1 (Poor) to 5 (Excellent): Group Members: Quality of the Experiment Developed: 1 2 3 4 5 Quality of the Analysis and Findings of the Experiment: 1 2 3 4 5 Quality of the Presentation: 1 2 3 4 5 Project Complexity/Effort-Put-Forth/Completeness: 1 2 3 4 5 Overall Assessment of the Project: 1 2 3 4 5

LAB EXPERIMENT DESIGN EVALUATION