FLUID MACHINERY

iten
Code
56624
ACADEMIC YEAR
2017/2018
CREDITS
6 credits during the 1st year of 9269 Mechanical Engineering - Design and Production (LM-33) GENOVA
SCIENTIFIC DISCIPLINARY SECTOR
ING-IND/08
LANGUAGE
Italian
TEACHING LOCATION
GENOVA (Mechanical Engineering - Design and Production)
semester
2° Semester
modules
This unit is a module of:

OVERVIEW

The course is aimed at providing the basic information for:

The choice of a fluid machine basing on the requested performance

The knowledge of its behaviour, and related fluid dynamic and structural issues

AIMS AND CONTENT

LEARNING OUTCOMES

The course provides the fundamental concepts for the choice and the operation of compressors, blowers and pumps for common applications. Explanation of the basic theory will be followed by design exercises.

TEACHING METHODS

Room lectures and exercises.

SYLLABUS/CONTENT

The main engineering problems: the design problem, the direct problem, and the choice problem. The basic equations for the study of open systems and turbomachines (continuity, energy, Euler) and the definition of the important quantities for the study of fluid machinery (head, efficiency, specific work). Statistics and similarity; use of statistics for the choice of a machine: the Cordier plot. The effect of heating and dissipation on the efficiency of the compression of gases.

Dynamic type machines: compressors, blowers, fans, and pumps, of axial and radial type: working principle, typical applications, limitations of operating conditions. (stall, cavitation, surge).

Displacement type machines: reciprocating and rotary screw/vane compressors and pumps: working principle, typical applications, limitations on the operating conditions (volumetric efficiency, maximum compression ratio, cavitation).

Similarity and characteristics curves of turbomachines and of typical fluid dynamic loadings (hydraulic circuits and choked nozzles). Determination of the operating point: matching of the characteristic curves.

The unsteady operation of turbomachines and the ways of avoiding it.

Design exercises: filling of a tank and fluid distribution circuit.

RECOMMENDED READING/BIBLIOGRAPHY

Lecture notes by the teacher, available at https://dime.aulaweb.unige.it/course/search.php?search=modulo+di+macchine

R.I. Lewis, Turbomachinery performance analysis, John Wiley and Sons

L. A. Catalano, M. Napolitano, Elementi di Macchine operatrici a fluido, Pitagora Editrice

TEACHERS AND EXAM BOARD

Office hours: Please contact the teacher by e-mail at the address <Andrea.Cattanei@unige.it>

Exam Board

VINCENZO BIANCO (President)

ANDREA CATTANEI (President)

EDWARD CANEPA

CARLO CRAVERO

FRANCESCO DEVIA

LUCA ANTONIO TAGLIAFICO

LESSONS

TEACHING METHODS

Room lectures and exercises.

LESSONS START

According to the official classes schedule, available at http://www.ingegneria.unige.it/index.php/orario-e-calendario-delle-lezioni

Class schedule

FLUID MACHINERY

EXAMS

EXAM DESCRIPTION

Oral examination, aimed to assess the student comprehension of the physical meaning of the treated subjects as well as of their engineering usefulness.

ASSESSMENT METHODS

Discussion of the subjects treated in course starting from two questions

Exam schedule

Date Time Location Type Notes
17/01/2018 14:30 GENOVA Esame su appuntamento Contattare il docente via e-mail con almeno 10 giorni di anticipo. Ora indicativa 09:30. Aula e orario verranno stabiliti in base al numero degli studenti iscritti.
29/05/2018 09:30 GENOVA Esame su appuntamento Contattare il docente via e-mail con almeno 10 giorni di anticipo. Ora indicativa 09:30. Aula e orario verranno stabiliti in base al numero degli studenti iscritti.
04/06/2018 09:30 GENOVA Esame su appuntamento Contattare il docente via e-mail con almeno 10 giorni di anticipo. Ora indicativa 09:30. Aula e orario verranno stabiliti in base al numero degli studenti iscritti.
05/06/2018 09:30 GENOVA Esame su appuntamento Contattare il docente via e-mail con almeno 10 giorni di anticipo. Ora indicativa 09:30. Aula e orario verranno stabiliti in base al numero degli studenti iscritti.
18/06/2018 09:30 GENOVA Esame su appuntamento Contattare il docente via e-mail con almeno 10 giorni di anticipo. Ora indicativa 09:30. Aula e orario verranno stabiliti in base al numero degli studenti iscritti.
12/07/2018 09:30 GENOVA Esame su appuntamento Contattare il docente via e-mail con almeno 10 giorni di anticipo. Ora indicativa 09:30. Aula e orario verranno stabiliti in base al numero degli studenti iscritti.
12/07/2018 09:30 GENOVA Esame su appuntamento Contattare il docente via e-mail con almeno 10 giorni di anticipo. Ora indicativa 09:30. Aula e orario verranno stabiliti in base al numero degli studenti iscritti.
20/09/2018 09:30 GENOVA Esame su appuntamento Contattare il docente via e-mail con almeno 10 giorni di anticipo. Ora indicativa 09:30. Aula e orario verranno stabiliti in base al numero degli studenti iscritti.
20/09/2018 09:30 GENOVA Esame su appuntamento Contattare il docente via e-mail con almeno 10 giorni di anticipo. Ora indicativa 09:30. Aula e orario verranno stabiliti in base al numero degli studenti iscritti.