cee4324-5984_lecture1

# cee4324-5984_lecture1 - CEE 4324/5984 Open Channel Flow...

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Glenn E. Moglen Department of Civil & Environmental Engineering Virginia Tech Course Introduction & Begin Specific Energy CEE 4324/5984 –Open Channel Flow – Lecture 1

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Course Prerequisites: “CEE 3304: Fluid Mechanics, CEE 3314: Water Resources Eng.” Call Roll Discuss syllabus Wikipedia Assignment (CEE 5984 only) Moglen’s Windmill: Significant Figures Specific Energy Definition Example 1: One energy, two depths Example 2: Minimum energy (critical depth) Today’s Agenda
Discuss Syllabus Main Points: Homework due on date indicated Class Attendance Inform Dr. Moglen BEFORE planned absences Contacting Dr. Moglen Academic Honesty

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Introductory Information Class web sites: Scholar (as usual, submit work at dropbox) Open to public: http://filebox.vt.edu/users/moglen/ocf/index.html Book: Please order a copy of the book: Chaudhry: Open Channel Flow (2 nd Edition) ISBN: 0387301747
Wikipedia Assignment Applies only to students in CEE 5984 Explanatory document at web site There are existing pages you may examine: First deadline is Sept. 1 (group formation)

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QUESTIONS?!
Rule 1: Exact numbers have infinite significant digits. Ex: A dozen eggs is exactly 12 eggs. Rule 2: Zeros used just to position the decimal point are not significant figures. Trailing zeros are not significant unless a decimal point is explicitly indicated. Ex: 0.0234 has 3 significant figures Ex: 2 0 has 1 significant figure Ex: 20 . has 2 significant figures Ex. 20.0 has 3 significant figures For Starters: Significant Figures

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Rule 3: In multiplication and division, an answer contains no more significant figures than the least number of significant figures used in the operation. Ex: For Starters: Significant Figures (cont.) result) (reported 15.2 result) r (calculato 1782 . 15 ) 23 . 1 ( ) 34 . 12 ( = = = = w L A
Rule 4: In addition and subtraction, the last digit retained in the sum or difference is determined by the

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## This note was uploaded on 12/24/2011 for the course CEE 4324 taught by Professor Moglen during the Fall '11 term at Virginia Tech.

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cee4324-5984_lecture1 - CEE 4324/5984 Open Channel Flow...

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