IN/0210 - COASTAL HYDRAULICS
Academic Year 2021/2022
Free text for the University
MARIA GRAZIA BADAS (Tit.)
- Teaching style
- Lingua Insegnamento
|[70/86] ENVIRONMENTAL AND LAND ENGINEERING||[86/20 - Ord. 2016] GEOINGEGNERIA E DIFESA DEL SUOLO||6||60|
Knowledge and understanding:
Students completing the course will have knowledge of topics central coastal hydraulics, with particular reference to the hydrodynamic processes in coastal environments, the interaction between the sea and the coast, to the works of coastal defense.
Knowledge and understanding applied:
The student will be able to understand and interpret the hydro-dynamic processes in coastal environments and their interaction with the works of coastal defense.
The knowledge gained in the field theoretical and applicative field, will enable students to understand the processes in the coastal environment and the effects of protection works on the coastal circulation and sediment transport.
The student will acquire the ability to communicate, express and support, orally and in writing, issues relating to the subject of the course.
The students will learn methods and tools for setting numerical quantities and the resolution of the problems faced, and this will allow them to continue their engineering studies and subsequently deal with the professional activity with greater autonomy and discernment.
It is essential to know fundamentals of Physics, Mathematics, Statistics and probability, Hydraulics
The course deals with a theoretical and application perspective, the following topics:
1) The hydro-dynamic processes in coastal: Waves and tides (15h lessons + 5 h Exercise)
Regular waves: classification and characteristics of regular waves, waves Irrotational small amplitude, speed, reflection, energy and power, irrotational and rotational waves of finite amplitude, breaking waves, standing waves. Changes in monochromatic waves: wave speed, refraction, diffraction, energy dissipation, set-down and set-up, surfing area.
Statistical analysis and stochastic model of the real waves, directional and frequency spectrum. reconstruction, prediction and detection of waves, wind and wave data.
EXERCISES: wind and wave data analysis (2 h); analysis and determination of the characteristic parameters of random waves generated in the laboratory (3 h).
2) The interaction between the sea and the coast (15h lessons + 5 h Exercise)
Transformation of the waves from off shore: refraction, diffraction, shoaling, breaking, reflection.
Currents: outline of the tidal currents, coastal circulation: longitudinal and rip currents, meteorological effects on sea levels, outline the current density, drift and gradient, wind action on the free surface of the sea.
Elements of coastal morphology and materials: materials coastal hydrodynamics of the granules, sampling and analysis of sediments.
Sediment transport and hydrodynamic evolution of the beaches: hydrodynamic sediment actions, forms of equilibrium of the beaches and critical stresses, transverse and longitudinal transport, depth of closure and active beach, equilibrium profile, monitoring technologies shoreline, emerged beach and submerged areas of the mouth.
EXERCISES: Determination of the longitudinal sediment transport (2 h); determination of the equilibrium profile of a beach with public domain software (3 h).
3) Works to protect the coast: the design and effects Hydromorphological (10h lessons + 10 h exercise)
General and classification of works of defense: active and passive works, works longitudinal (breakwater emerged and submerged, floating, etc ...), transverse (brushes, etc ...) and mixed; dewatering. Selection criteria of the life time of the work and design stresses.
Effects of the defense works on the coastal circulation and sediment transport. Sediment balance and morphological effects of the works on the shore line and the bottom. Mixing processes in the vicinity of the works of defense and benthic habitat. Design and verification of protection works, construction signs. Elements of environmental impact assessment of the works.
EXERCISES: laboratory analysis of the effects of parametric characteristic of a breakwater on the damping of waves (5 h); sizing of a work of coastal defense (5 h).
The course is divided into 40 hours of lesson and 20 hours of practical exercises and projects that have to be completed and presented from the students before the final exam. Due to the present emergency, lessons may be followed on-line, while practical activities will be tutored thanks to on line platforms.
Verification of learning
Oral exam, articulated into three questions for the evaluation of the student preparation on the official course program (2/3 worth for the final grade) and critical discussion on the practical exercises and projects developed during the course (1/3 worth for the final grade)
A. Atzeni. Dispense di Idraulica Marittima (Aracne Editore);
G. Scarsi. Elementi di idraulica marittima e costiera (Aracne Editore);
V. Milano. Idraulica marittima : maree e moti ondosi, rifrazione, frangimento, diffrazione e riflessione; opere portuali interne ed esterne; sistemazione dei litorali (Hoepli);
U. Tomasicchio. Manuale di Ingegneria Portuale e Costiera (Bios Editore);
Apart from the suggested list of books, slides used during lessons are given to the students.
Further didactic stuff is available through the external links at the web page of the course.