FLOOD PROPAGATION
Stampa
Enrollment year
2020/2021
2021/2022
Regulations
DM270
ICAR/02 (MARITIME HYDRAULIC CONSTRUCTION AND HYDROLOGY)
Department
DEPARTMENT OF CIVIL ENGINEERING AND ARCHITECTURE
Course
CIVIL ENGINEERING
Curriculum
Idraulico
Year of study
Period
1st semester (27/09/2021 - 21/01/2022)
ECTS
6
Lesson hours
48 lesson hours
Language
Italian
Activity type
ORAL TEST
Teacher
PETACCIA GABRIELLA (titolare) - 6 ECTS
Prerequisites
The Course of deals with theoretical and application matters chiefly referred to the Teaching Fields of : Hydraulic and Fluid Mechanics .It is useful for the students a preliminary frequency of the teaching Matters above mentioned, for an easier understanding of the object of the Course
Learning outcomes
Give the concepts necessary to use one and two dimensional unsteady flood propagtion models. The last part of the course is dedicated to the use of ORSADEM software
Course contents
Introduction: steady and unsteady flow, uniform and varied flow, pipe flow vs open channel flow

De Sant Venant equations (1d), divergent and non divergent form, supplementary terms and coefficients

Initial and boundary conditions

Discontinuous solutions: Bores

Simple wave, Dam break waves

Italian Regulations on Dam safety

Simplified channel flow equations

Numerical solution of the unsteady flow equations (method of characteristics, explicit and implicit

finite differences methods, numerical integration schemes: predictor corrector, flux splitting,

upwind and downwind; accuracy of the numerical method, stability analysis

Shallow water equations (2D)

Mesh generation (structured/non structured)

Simulation of flow in natural streams (1d vs 2D models, topological and hydraulic discretization,

some computational problems in rivers and floodplains, flooded area mapping techniques)

Models calibration and data needs

Flood wave propagation through hydraulic singularities

Introduction to the use of ORSADEM code

Case study: analysis of Sella Zerbino dam break (Italy)
Teaching methods
Oral and practical lessons
V.T. Chow 1959 Open Channel Hydraulics Mac Graw Hill Book , New York

J.A. Cunge, F.M. Holly, & A.Vervey, Practical aspects of Computational River Hydraulics. 1980.

Pitman Publ. Inc, London

K. Mahmood , V.Yevjevich 1975. Unsteady flow in open channel, Water Resources publications, Colorado, 1975.

H. Chanson 2004 The Hydraulics of Open Channel Flow: An Introduction, Second Edition,

Elsevier Oxford

T.W. Sturm. 2001. Open Channel Hydraulics, Mc Graw Hill, Singapore