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Civil Engineering Hydraulics Mechanics of Fluids

Fundamentals

 Class hours 9:10 to 10:05  Textbook: Introduction to Fluid

Mechanics, William S. Janna, Third Edition (you can use the Fourth Edition)

 Third Edition is available from Dr. Marchetta on the third floor.

Class Overview 2

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Class Overview 3

What are my rules?

  Get here on time   Come to class

  Even if I don’t entertain you   Submit your homework   Ask questions at any time

  There are no dumb questions   Respect your classmates

Class Overview 4

What are my rules?

  You are becoming engineers, your work should reflect that   Homework submission on

engineering paper   Logical sequence of steps that could

be followed by a novice   Identify everything known or given by

the problem

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Class Overview 5

What are my rules?

  You are becoming engineers, your work should reflect that   A sketch is always useful in

describing a problem   Identify what you are looking for   Identify all your assumptions   Use units in all steps

Class Overview 6

What are my goals?

  Give you the opportunity to develop a sound fundamental background in fluid mechanics to allow you to utilize this background in   The FE exam   Further undergraduate study   Professional practice

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Class Overview 7

Questions for You

  What are your immediate goals (by the end of the semester)?

  What are you willing to do (honestly) to achieve those goals?

Class Overview 8

What are you willing to do to achieve your goals?   This class meets three hours a week   As an average, a student would

spend at least nine hours outside of class to get a B

  This usually holds true for every class not just this one

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Class Overview 9

Homework

  You can expect to have at least one problem but no more than four problems for any assignment

  Even if you don’t complete the assignment, submit what you have for evaluation

  Something is always better than nothing

Class Overview 10

Toolbox

  You are expected to have a working knowledge of   Algebra   Trig   Calculus   Physics   Some computational/programming

system or language

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Class Overview 11

A Quiz

  The following slides each have a question

  Please answer them the best you can   Do not use any sort of calculation

device (phone, calculator, etc.) all you need is a pencil and paper

Class Overview 12

A Quiz

  How much, in force pounds, does a gallon of water weigh?

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Class Overview 13

A Quiz

  How much, in Newtons, does a liter of water weigh?

Class Overview 14

A Quiz

  How many gallons of water are in a cubic foot of water?

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Class Overview 15

A Quiz

  How many liters of water are in a gallon of water?

Class Overview 16

A Quiz

  What is the approximate volumetric flow rate of the water fountain across the hall in cubic feet per minute?

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Class Overview 17

A Quiz

  About how long would it take the average garden hose connected to a residential faucet to fill this classroom?

Class Overview 18

A Quiz

  What is the mass density of water in the USCS system?

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Class Overview 19

A Quiz

  How much does a slug weigh at standard gravity? Use pounds force for the weight.

Class Overview 20

A Quiz

  Putting a nozzle on the end of a hose will

1.  Increase the velocity of the water 2.  Increase the pressure of the water 3.  Increase the volumetric flow rate of

the water 4.  All of the above

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Class Overview 21

A Quiz

  Viscosity and density are the same thing   True   False

Class Overview 22

A Quiz

  Force and pressure are the same thing   True   False

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Class Overview 23

Reading

  Through Section 1.3   No homework problems yet.