# Maritime Hydraulics and Harbour Engineering

## Course Description:

Introduction to sea hydraulics. Waves: generation of wind-waves, wave measurements, real waves and their mathematical representation. Theories of small and finite amplitude waves. Analysis of wave records: description parameters, distribution of wave heights. Seabed influence: shoaling, breaking, refraction. Wall influence: reflection, diffraction. Pressures of standing and breaking wave on vertical wall. Types and roles of ports. Design criteria for harbour works. Vessel characteristics. General layout of harbours. Navigation channels, port entrance, manoeuvring area. Wharves and piers. Design of rubble-mound breakwaters. Walls with vertical face: calculations under standing and breaking wave conditions. Design of quaywalls. Berth outfits. Planning of back – up area of general cargo area. Sheds and other facilities.

### Prerequisite Knowledge

It is recommended that students have the basic knowledge of Fluid Mechanics.

### Course Units

# Title Description Hours
1 Introduction Introduce students to the subject area of the course. 0.5Χ4=2
2 Mathematical Wave Theories Airy and non-linear (Stokes) waves. Effect of the sea bottom on the characteristics of simple harmonic waves. 1.5Χ4=6
3 Real waves Introduction to spectra. Short-term - Long-term wave distribution. 1Χ4=4
4 Waves in coastal zone Description of wave mechanisms of shoaling, refraction, reflection, diffraction and wave breaking. Exercises are solved. 3X4=12
5 General port layout Design wave parameters 1Χ4=4
6 "External" and ''Internal'' Harbour Works Design of projects with slopes, design of projects with vertical front, configuration of berth - mooring works, Gravity walls - Failure Mechanisms. Estimation of actions from environmental and functional loads - tests of adequacy of gravity constructions. Environmental impacts from harbour works. 6X4=24

### Learning Objectives

Upon successful completion of the course, students will be able to:

1. understand the basic principles of maritime hydraulics (e.g. linear wave theory, waves formation in coastal zone) through detailed mathematical formulas and diagrams.
2. understand the basic principles of port design through: (i) analytical wave prediction models; and (ii) hydrodynamic loading calculations on vertical fronts and armour slope stability stability.
3. assess the impact of wave reflection, diffraction and breaking phenomena on both the wave disturbance and the effects on the fronts.
4. design and size at a preliminary stage breakwaters with inclined slopes and with a vertical front through equations.
5. design and size at a preliminary stage gravity quay walls.
6. estimate basic port design parameters (harbor depth, entrance width, required lengths of boat mooring etc.).

### Teaching Methods

 Teaching methods Lectures in class. Applications for each topic. Solving of simple examples and problems in the classroom. Discussion of case studies. Presentations on the Blackboard. Slides. Calculations on PC via Excel and computational codes. 2 hours Students solve simple exercises at home using mainly Excel on PC. For each thematic section applications are made in class.

### Student Assessment

• Final written exam: 70%
• Mid-term exam: 20%
• Problems - Applications: 10%

### Textbooks - Bibliography

1. By the School's Secretariat, the book of the Course of Maritime Hydraulics (K.I. Moutzouris) is distributed
2. From the Book store Symmetry the book "Introduction to Port Projects" (C. Memos) is distributed. Additional Bibliography
3. Koutitas, Ch (1994). Introduction to Coastal Technique and Port Works, Publications Zeti, Thessaloniki.
4. Dean RG & Dalrymple RA (1984). “Water Wave Mechanics for Engineers and Scientists”, Prentice-Hall Inc., Englewood Cliffs, New Jersey, USA; [also: 2nd Edition (1991) in Advanced Series on Ocean Engineering, Vol. 2, Ed. P LF Liu, WorldScientificPress.]
5. Dingemanns MW (1997). “Water Wave Propagation over Uneven Bottoms. Part 1: Linear Wave Propagation”, Advanced Series on Ocean Engineering, Vol. 13, Ed. P LF Liu, WorldScientificPress.
6. Goda Y (1985). “Random Seas and design of Maritime Structures”, University of Tokyo Press, Tokyo, Japan; [also: 2nd Edition (2000) in Advanced Series on Ocean Engineering, Vol. 15, Ed. P LF Liu, WorldScientificPress.]
7. Massel SR (1996). “Ocean surface waves: their physics and prediction”, Advanced Series on Ocean Engineering, Vol. 11, Ed. P LF Liu, WorldScientificPress.
8. Mei CC, Stiassnie M, Yue D KP (2005). “Theory and applications of ocean surface waves”, Advanced Series on Ocean Engineering, Vol. 23, Ed. P LF Liu, WorldScientificPress.
9. US Army Corps of Engineers (2002). “Coastal Engineering Manual: Parts I-IV”.

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