OUTLINE
•
Introduction
•
Syllabus Review
•
Team Assignment
•
A Problem Solving Protocol
INTRODUCTION
Me: Theodore G. Cleveland, Ph.D., P.E., M. ASCE, F. EWRI
Something Epic:
In 1975 I spent a summer in Maine and climbed Mt Katadin (northern terminus of Appalachian Trail) and
canoed the Allagash Wilderness. I ended up walking a lot of the canoe trip when my boat partner broached
and destroyed the canoe on a rock. I took a bus back from Maine to California (several days on a Greyhound
Bus – not fun)
In 1986 I rode a bicycle from Arcata, CA to Bryson City, NC. That same year I hitchiked from NC to Denver
CO, finally took a bus back to California for graduate school.
In 2005 I rode my bike on a 600-mile loop in Southern Oregon (this was a supported ride, not not nearly as
epic as it could be, but was still hard work)
In 2015 I hiked the Grand Canyon from Rim-to-Rim-to-Rim (~48 miles) in about 72 hours
You: I will call your name (alphabetical). You tell us what you want to be called, and something epic. If nothing
epic, then something quirky!
SYLLABUS
The syllabus is posted on the class web site:
http://www.rtfmps.com/ce3305-2016-2
The website (above) has a copy of textbooks that are referred to as well as
extensive notes, and these slides. Be sure to visit the website before each
lecture to know what’s ahead.
WEB SERVER OVERVIEW
Course materials to be supplied by web server
URL: http://www.rtfmps.com/ce3305-2016-2/
The next few slides show how to navigate the web server.
Keep in mind that items are uploaded sometimes just a few minutes in advance.
We do try to stay ahead on the Exercise Sets, and Project Directory.
The use of an off-campus server is for reliability and IP isolation.
WEB SERVER OVERVIEW
TEAM DESIGNATIONS
Everyone is assigned to a Team
Homework is a team assignment, elect or appoint a leader.
Homework can be handed in manually, or scanned and emailed as PDF (please
no JPG, these are a pain to assemble at my end for grading your work)
Quiz 1 – 5 is in-class, individual work
Final Exam is in-class, individual work
Get to know your team today. Exchange e-mail and phone numbers. Your team is
like your family, don’t let them down.
A PROBLEM SOLVING PROTOCOL
The protocol is both a format (how I would like you to prepare homework solutions) as
well as a method for finding answers to fluid mechanics (or nearly any
engineering) problems
What is the point of the homework?
1) Develop a systematic method to solve defined engineering problems
2) Develop “muscle memory” to apply the process
3) Become accustomed to documenting effort
A PROBLEM SOLVING PROTOCOL
1. State (restate) the problem; include a sketch and/or flow
diagram
2. List known properties, states, flows …
3. List unknown (what we are looking for in the problem statement)
states …
4. Identify relevant governing principles, assumptions, and
equations – useful to actually list the assumptions and governing
equations; sometimes will have to make an additional
assumption along the way
5. Solve for the unknowns
6. Validate/discuss the results (advanced: assess the sensitivity to
relaxing an assumption)
AN EXAMPLE ILLUSTRATING THE PROBLEM SOLVING
PROTOCOL
From the textbook (pp 26-27):
STATE THE PROBLEM; INCLUDE SKETCH
Include Team Name,
Problem Number,
and Sheet number
on each sheet.
Include a
sketch – it’s a
way to collect
thoughts
LIST known properties, states, flows …
List the known
properties about the
situation
LIST The Unknown(s) …
List the unknown(s).
State in words and in symbolic form
IDENTIFY RELEVANT GOVERNING PRINCIPLES,
ASSUMPTIONS, AND EQUATIONS
Governing equation(s);
and assumptions
SOLVE FOR THE UNKNOWN(S)
Include Team Name,
Problem Number,
and Sheet number
on each sheet.
VALIDATE/DISCUSS THE RESULTS
Example (from textbook) – use problem solving
protocol
No telling why this is part of
the problem; use units that
make sense!
STATE THE PROBLEM; INCLUDE SKETCH
List known properties …
List UNknown properties …
IDENTIFY RELEVANT GOVERNING PRINCIPLES,
ASSUMPTIONS, AND EQUATIONS
SOLVE FOR THE UNKNOWN(S)
SOLVE FOR THE UNKNOWN(S)
SOLVE FOR THE UNKNOWN(S)
SOLVE FOR THE UNKNOWN(S)
VALIDATE/DISCUSS THE RESULTS
INCLUDE SUPPORTING DATA WHEN APPROPRIATE
WHAT IS FLUID MECHANICS?
Textbook states:
WHAT IS FLUID MECHANICS?
WHAT IS FLUID MECHANICS?
WHAT IS FLUID MECHANICS?
• Fluid mechanics is the study of motion, deformation,
momentum, energy and related properties of
materials that cannot resist shear stress.
• Liquids, and Gasses
CONTINUUM
• Calculus of fluid mechanics
uses continuously
differentiable functions
(usually) and implicitly
assumes a fluid is a
continuum.
PARTICLE
• Fluid as a collection of
particles (parcels) is useful
when studying motion in a
Lagrangian coordinate
system.
• A fluid particle (parcel) is a
quantity of fluid with mixed
identity (usually mass)
Dimensions, units and such …
• Dimensions are things that can be measured
• Length, weight, temperature …
• Units relate how much of a dimension is measured or
counted
• A meter is a unit of length.
• A centimeter is a unit of length.
• A unit conversion is how that same amount of a
dimension is expressed in a different unit.
• One meter is the same length as one hundred
centimeters.
CONSISTENT UNITS
• A set of units with conversion factors equal to unity (pg 8)
CONSISTENT UNITS
• Consistent units in SI and US Customary (Imperial,
British) systems
EXERCISE 1
Due tomorrow 0800 – Print one solution (as a team) and scan into a PDF document,
then E-mail to [email protected]
In the subject line put: CE3305-2016-2-TEAM## (Where you put your team ##).
Include the names of all the team members on the first page.
NEXT TIME
Intensive and Extensive Fluid Properties