WATER SYSTEMS AND HYDRAULIC TRANSIENTS
Stampa
Enrollment year
2016/2017
Academic year
2017/2018
Regulations
DM270
Academic discipline
ICAR/02 (MARITIME HYDRAULIC CONSTRUCTION AND HYDROLOGY)
Department
DEPARTMENT OF CIVIL ENGINEERING AND ARCHITECTURE
Course
ENVIRONMENTAL ENGINEERING
Curriculum
Impiantistico
Year of study
Period
1st semester (02/10/2017 - 19/01/2018)
ECTS
6
Lesson hours
52 lesson hours
Language
Italian
Activity type
WRITTEN AND ORAL TEST
Teacher
CIAPONI CARLO (titolare) - 6 ECTS
Prerequisites
Knowledges in "Hydraulics"" are required
Learning outcomes
The course is divided into two modules: “HYDRAULIC NETWORKS” and “HYDRAULIC TRANSIENTS”.

At the end of the “Hydraulic networks” module the student must know the basic concepts regarding the steady flow in the hydraulic pressurized systems and their mathematical modeling. The student must also be able to carry out the design and the analysis problems of water networks in different topological configuration and feeding conditions.
The “Hydraulic Transients” module aims to provide the basic concepts related to the unsteady flow phenomenology in pressurized hydraulic systems and its mathematical modeling. The student must also acquire the ability to perform hydraulic analysis in unsteady flow conditions for some typical plants (hydropower and pumping plants).
Course contents
HYDRAULIC NETWORKS
Introduction: pressurized pipe systems characteristics, long pipes, working under negative pressures, design and analysis problems of long pipes.
Recall hints related to pumping systems: characteristic curves, NPSH, maximum suction lift, analysis and design problems.
Pipeline systems: definitions and topology, schematic delivery.
The hydraulic analysis of pipeline systems: DDA (Demand Driven) and PDA (Pressure Driven) approach; equations; numerical methods for the resolution; hydraulic analysis of networks with complex feeding systems (several tanks and pumps).
Performance analysis of water systems: performance indicators and their quantification.
The design of pipeline systems: design problem; solution methods; design with linear programming techniques.
Software application: teaching is supplemented by exercises during which the students have to design and verify some water distribution networks, through the application of software given by the teacher

“HYDRAULIC TRANSIENTS”
Introduction: general information about the unsteady flow phenomena in hydropower plants and in pumping systems.
Elastic and inelastic approach with the related equations.
Mass oscillations: phenomenon description, equations, analytical and numerical solution.
Water hammer: phenomenon description; equations; numerical solution with the method of characteristics, analysis of the main boundary conditions, introduction to water hammer problems associated with the cavitation phenomenon.
Quick methods for the calculation of water hammer: rapid and slow closure; Allievi and Michaud formulas.
Water hammer attenuation: air chambers (design and analysis).
Teaching methods
Lessons (hours per year in the classroom): 34
Exercises (hours per year in the classroom): 18
Reccomended or required readings
The lesson slides and exercises solutions are available on KIRO Platform
Assessment methods
The exam takes place by two written tests ( test od “Hydraulic networks” and test of “Hydraulic transients”. The average of the two votes (if both equal or greater than 18/30) will be the final vote of the course. The positive result of one of the two tests, if accepted by the student, will be used for the final result even for subsequent exam sessions, once the second test will be passed.
Further information
Sustainable development goals - Agenda 2030