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## FLUID MECHANICS

CODE 66209 2021/2022 5 cfu during the 1st year of 10799 INGEGNERIA CIVILE(LM-23) - GENOVA ICAR/01 Italian GENOVA 2° Semester AULAWEB

## OVERVIEW

The study of the motion of a fluid and its interaction with structures of different types (sea waves on coastal structures, flood waves on bridge piles) and with the surrounding environment (erosion processes and deposition of sediments) can be approached theoretically, experimentally or numerically. The course illustrates the equations, the boundary conditions and the simplified models used to determine the motion of a fluid and the forces it exerts on the bodies it invests

## AIMS AND CONTENT

### LEARNING OUTCOMES

The module of Fluid Mechanics is aimed at describing the fundamental principles and at obtaining the equations  that govern the motion of a fluid. Moreover, during the course, some simple problems of practical interest are formulated and solved

### AIMS AND LEARNING OUTCOMES

`The course describes the procedures that allow the correct formulation of the problem and lead to the equations and boundary conditions necessary for the determination of the three-dimensional motions of incompressible fluids around bodies of arbitrarily shape with the aim of quantifying the different components of the force that the fluid exerts on the body. The course also provides the theoretical basis for subsequent courses that address typical problems of civil engineering such as wind engineering and maritime construction`

### PREREQUISITES

`Basic knowledge of calculus, physics and mathematical physics`

Frontal lectures

### SYLLABUS/CONTENT

Description of the motion of a fluid: Lagrangian approach and Eulerian approach. The trajectories of fluid elements and their velocity. The local and total (material) derivatives. The transport theorem. The principle of mass conservation and continuity equation. Cauchy axiom. The principle of momentum. The stress tensor. The Cauchy equation. The theorem of mechanical power. The constitutive law and the Navier-Stokes equations. The unidirectional flows (Couette’s flow and Poiseuille’s flow). The vorticity. The dimensionless equations of motion: the numbers of Keulegan-Carpenter, Froude, Reynolds. The inviscid fluid model (Euler’s equations) and Bernoulli’s theorem. Irrotational flows and Morison’s equation. Boundary layers (outline). Turbulent flows and Reynolds equations. Conditions of incipient motion of sediments. Shields diagram. The bed and suspended sediment transport.
Sediment continuity equation (Exner equation).

`"Note di Meccanica dei Fluidi" freely downloadable from the Genova University Press website.`

https://gup.unige.it/sites/gup.unige.it/files/pagine/Note_di_Meccanica_…

## TEACHERS AND EXAM BOARD

### Exam Board

PAOLO BLONDEAUX (President)

MARCO MAZZUOLI

GIOVANNA VITTORI (President Substitute)

## LESSONS

### LESSONS START

https://corsi.unige.it/10799/p/studenti-orario

### Class schedule

All class schedules are posted on the EasyAcademy portal.

## EXAMS

Oral exam

### ASSESSMENT METHODS

The oral exam is aimed at verifying i) the mastery of the subject in general, ii) the understanding of the concepts and the different models illustrated during the course, iii) the ability to correctly formulate a mathematical model of the phenomena of interest for a Civil Engineer that involve the motion of a flui

### Exam schedule

Date Time Location Type Notes
05/01/2022 16:00 GENOVA Esame su appuntamento
20/01/2022 16:00 GENOVA Esame su appuntamento
15/02/2022 16:00 GENOVA Esame su appuntamento
22/06/2022 16:00 GENOVA Esame su appuntamento
06/07/2022 16:00 GENOVA Esame su appuntamento
27/07/2022 16:00 GENOVA Esame su appuntamento
08/09/2022 16:00 GENOVA Esame su appuntamento