OCEN 671 Ocean Wave Mechanics

OCEN 671

Ocean Wave Mechanics

Fall 2014

Lectures: MWF 9:10-10:00 am Room: CE 221

Lecturer: Dr. Jun Zhang

CE/TTI Room 808E Telephone: 845-2168 E-mail:

Office Hours: 4:00 –5:00 pm MW and recitations if necessary.

Textbook: Water Wave Mechanics for Engineers and Scientists, Dean and Dalrymple, 1984, Prentice Hall (also World Scientific).

References:

1. The Applied Dynamics of Ocean Surface Waves, C.C. Mei, 1983, Wiley-Interscience.

2. The Dynamics of the Upper Ocean, O.M. Phillips, 1977, Second Edition, Cambridge University Press.

3. Ocean Waves-The Stochastic Approach, M.K. Ochi, 1998, Cambridge University Press.

4. Waves in the Ocean, LeBlond and Mysak, 1978, Elsevier.

5. Water Waves, J.J. Stoker, 1957, Interscience.

6. Shore Protection Manual, U.S. Army Corps of Engineers, CERC, Vols. 1-2, 1984.

7. Mechanics of Fluids, Shames, 2nd Edition, 1982.

8. Marine Hydrodynamics, J.N. Newman, 1977, The MIT Press.

9. Electronic Class Notes (E-notes), J. Zhang, 2002. Website: http://ceprofs.tamu.edu/jzhang/

Tentative Course Outline

Week Mtg. Topics Text Assignment

Sept. 1-5 1 Introduction Chapter 1
2 Review of Hydrodynamics: Control and Material Chapter 2
Volume, Eulerian and Lagrangian view
3 Navier-Stokes Equation
Sept. 8-12 4 Potential Function
5 Stream Function, Bernoulli's Theorem
6 Wave Theory: Formulation Chapter 3
Sept. 15-19 7 Linearization of the Free Surface Boundary Condition
8 Solution of the Linear Boundary Value Problem:
Standing and Progressive Waves
9 Waves with Uniform Current
Sept. 22-26 10 Kinematics and Pressure Field of Progressive Wave Chapter 4
11 Kinematics and Pressure Field of Standing Wave*
12 Wave Energy and Energy Propagation
Sept. 29-Oct.3 13 Wave Refraction, Snell's Law

14 Wave Breaking in Shallow Water
15 Wave Diffraction, Mild-Slope Equation*

Oct. 6-10 16 Long Wave Theory: Linear Equation Chapter 5
17 The Energy and Energy Flux
18 One-Dimensional Tides, Reflection and Transmission
Oct. 13-17 19 Seiching, Long Waves with Bottom Friction Chapter 5
20 Long Waves in Basins or Bays*
21 Long Waves Forced by a Moving Pressure Disturbance


OCEN 671 Ocean Wave Mechanics Page 2

Oct. 20-24 22 Wavemaker Theory: Piston-Type Wavemaker* Chapter 6
23 Flap-Type Wavemaker*
24 Exam

Oct. 27-31 25 Wave Simulation in Wave Tank Chapter 7
26 Wave Statistics
27 Unidirectional Wave Spectrum

Nov. 3-7 28 Time-Series Simulation
29 PM and JONSWAP Spectra

30 Directional Sea Measurements

Nov. 10-14 31 Directional Spectrum

32 Nonlinear Waves: Perturbation Approach of Stokes Chapter 11

33 First and Second Order Stokes Waves E-notes

Nov. 17-21 34 Properties of Nonlinear Waves Chapter 10

35 Mass Transport

36 Momentum Flux

Nov. 24-28 37 Radiation Stress
38 Set-down, Setup
39 Thanksgiving
Dec. 1-5 40 Finite Amplitude Wave Theory

41 Stokes Transformation and Stream Function Wave Theory*

42 Finite Amplitude Waves in Shallow Water

Dec. 8-10 43 Airy's Theory and Boussinesq Theory* E-notes

44 Review

Dec. 15 Final Exam (8:00 - 10:00 am)

*These topics may or may not be offered, depending on the class progress.

Homework: Homework assignments must be handed in by the due date at the beginning of the class. Late HW will be penalized unless you have strong reasons. A record will be kept of all HW turned in. HW performance will be properly taken into account in assigning the final course grade.

Exams: One mid-term exam and a final exam will be given. The grading of the exams will be based on both the approach and the final answer.

Course Grade: The final grade in the course is based on our best assessment of your understanding of the material and participation during the semester. The mid-term exam carries roughly a weight of 30%, the final exam 40% and homework 30%. However, other factors, such as interaction with the teacher, participation in lecture and recitation, etc. can make a significant difference in the final grade. The process of assigning the final grade also involves a careful review of the final exam to look "behind the numbers" to understand better the kinds of mistakes that were made. We know that the final grade is important to you and we take the process seriously.

Academic Integrity Statements: AGGIE HONOR CODE “An Aggie does not lie, cheat, or steal or tolerate those who do.”Upon accepting admission to Texas A&M University, a student immediately assumes a commitment to uphold the Honor Code, to accept responsibility for learning, and to follow the philosophy and rules of the Honor System. Students will be required to state their commitment on examinations, research papers, and other academic work. Ignorance of the rules does not exclude any member of the TAMU community from the requirements or the processes of the Honor System.

AMERICANS WITH DISABILITIES ACT (ADA): The Americans with Disabilities Act (ADA) is a federal anti-discrimination statute that provides comprehensive civil rights protection for persons with disabilities. Among other things, this legislation requires that all students with disabilities be guaranteed a learning environment that provides for reasonable accommodation of their disabilities. If you believe you have a disability requiring an accommodation, please contact the Department of Student Life, Services for Students with Disabilities in Room B118 of Cain Hall or call 845-1637.