AIMS AND CONTENT

LEARNING OUTCOMES

Il modulo affronta il dimensionamento e la realizzazione di impianti idraulici e manufatti per il controllo e gestione delle acque in ambiente urbano e sul territorio. Fornisce strumenti concettuali/operativi per il dimensionamento e realizzazione di opere idrauliche per il controllo degli scarichi di origine antropica, la laminazione delle piene e ripartizione delle portate, degli impianti di pompaggio dell’acqua e stazioni di sollevamento.

AIMS AND LEARNING OUTCOMES

After attending the module "Design of Hydraulic Systems and Infrastructures", students will be able to design and dimension hydraulic works for water flow diversion and partitioning, storage tanks and storage areas, as well as pumping stations by knowing the main characteristics and hydraulic performance of centrifugal pumps, the various types of impellers, the risk of cavitation, the contemporary use of multiple pumps and the dimensioning of the pump sump and the associated damping and vortex prevention devices.

Students will develop the capability of managing their social interactions with a collaborative attitude and adopting constructive communication processes. They will develop decision-making autonomy, a collaborative attitude, the ability to manage information and materials, to negotiate solutions and to treat the uncertainties.

TEACHING METHODS

The module is organised in a series of frontal lectures in the classroom, including practical exercises on the dimensioning of simple design cases, and in a laboratory experience about the dimensioning of a lateral spillway.

Part of the module will be organised by dividing students in groups, to whom a design problem is assigned involving the dimensioning of a lateral spillway by means of software tools and experimental validation in a laboratory test, to be presented in the form of a technical report. In the last scheduled hours of the module, each group will be asked to illustrate the obtained result to the class; after the presentations, a discussion will be open addressing the specific cases encountered by each group and the adopted technical solutions.

Students who have valid certification of physical or learning disabilities on file with the University and who wish to discuss possible accommodations or other circumstances regarding lectures, coursework and exams, should speak both with the instructor and with Professor Federico Scarpa (federico.scarpa@unige.it  ), the Polytechnic School's disability liaison.

SYLLABUS/CONTENT

First part: Water management and control. Controlling outflows of anthropic origin; combined sewer overflows; threshold discharge in combined sewers; limiting the number of outflows; flow rate partitioning; dimensioning and verification of lateral spillways in subcritical and supercritical flow conditions; optimizing the spillway operation; sluice gates and narrowing of the channel. Storm water wash-off and first flush tanks. Controlling peak flows in drainage systems; dimensioning and verification of storage tank volumes; simplified methods; removing the simplifying hypotheses; construction criteria; tank maintenance and management.

Second part: Pumping systems. Definition and calculation of the pump head. Determining the system curve. Centrifugal pumps; definition and typologies; calculation of the pump curve; Adjustment of the pump head; Similarity of centrifugal pumps. Determination of the duty point; Adjustment and stability of the duty point; Simple schematics of typical pumping systems. Use of multiple pumps. Cavitation in centrifugal pumps; definition and calculation of the NPSH; reducing the risk of cavitation. Other types of pumps: screw pumps; volumetric pumps; membrane pumps; piston pumps; gear, wing and root pumps; Archimede’s screw; etc. Dimensioning of the pump sump volume; construction criteria; limiting vortexes and dead zones. Pump operation sequences. Pumping fluids other than water; suspensions; sewer water. Choosing the impeller. Transients in pumping systems; overpressure protection devices.

RECOMMENDED READING/BIBLIOGRAPHY

Lecture notes are available on the AulaWeb site and contain the material needed to attend the course. During lectures a few supporting textbooks are suggested for voluntary in depth investigation of the addressed topics.

TEACHERS AND EXAM BOARD

Exam Board

GIOVANNI BESIO (President)

LUCA GIOVANNI LANZA (President)

ENRICO CHINCHELLA

ARIANNA CAUTERUCCIO (President Substitute)

FRANCESCO DE LEO (President Substitute)

LESSONS

LESSONS START

See official schedule.

Class schedule

The timetable for this course is available here: Portale EasyAcademy

EXAMS

EXAM DESCRIPTION

The student knowledge of the course programme will be assessed by means of an oral exam. The discussion of the group work will be an integral part of the exam.

ASSESSMENT METHODS

For the report on the dimensioning of a lateral spillway based on the laboratory experience, the assessment of the student qualification is performed by evaluating the correctness of the solution provided for the assigned group work, the theoretical basis exploited and the experimental results. The interaction with other students within the group and the whole classroom will be also considered, as well as the ability to discuss technical-design aspects based on the questions posed by the teacher.

For the oral part, the assessment is performed based on the correctness of the exposition and discussion of design and/or conceptual topics concerning content of the whole course.