AIMS AND CONTENT

LEARNING OUTCOMES

The course aimes to provide a critical knowledge of the design procedures employed in the design of turbomachines. The performance required by the energy system in which the machine is used is considered, together with the characteristics and the matching with the other components of the system.

TEACHING METHODS

Theoretical lectures and computational exercises.

SYLLABUS/CONTENT

Application of Continuity, Energy, Momentum and Euler equations to turbomachines. The preliminary design, based on similarity and statistics.

Axial machines: mean line design. Radial equilibrium equation. Different vortex laws (free vortex, forced vortex, exponential and fixed angle). Effects of enthalpy variation and entrophy radial gradient effects into the flow angle distribution. Correlations.   

Centrifugal turbomachines: the blade loading and the blade shape; employ in the design problem. Slip factor effects and correlations (Stanitz, Stodola, Busemann, Wiesner). Japickse’s criterion for the loss evaluation inside centrifugal impeller. The jet and wake model. Logarithmic spiral trajectory. The design of the vaned and unvaned diffusers. Design of the volute. 

RECOMMENDED READING/BIBLIOGRAPHY

- N. A. Cumpsty, Compressor Aerodynamics, Longman, 1989

- O. E. Balje, Turbomachines A guide to Design, Selection and Theory, J. Wiley and Sons, 1981

- D. Japickse, Centrifugal Compressor Design and Performance, Concepts ETI, Inc. 1996

TEACHERS AND EXAM BOARD

Exam Board

DANIELE SIMONI (President)

EDWARD CANEPA

ANDREA CATTANEI

CARLO CRAVERO

DAVIDE LENGANI

MARINA UBALDI

PIETRO ZUNINO

LESSONS

Class schedule

DESIGN METHODS FOR FLUID MACHINERY AND ENERGY SYSTEMS

EXAMS

EXAM DESCRIPTION

Oral examination.

ASSESSMENT METHODS

The examination will be focused on two independent questions of the course. An exercise carried out with matlab focused on then 1D and/or 2D design procedures will be also analyzed

Exam schedule