Thermo-fluid-dinamics of machinery - a.y. 2016/2017
Period (Year/Semester): I/II
Required/expected prior knowledge: Nothing
Lecturers: Tuccillo Raffaele
The purpose of this course is to provide the students with the tools for an accurate study of the Energy conversion systems and their environmental impact, which are considered as fundamental topics in the second level degree in Energy and Environmental Mechanical Engineering. The course develops therefore through the discussion of the fundamentals of thermo-fluid-dynamics of machines and a number of practical examples. Attention is also paid to the most recurrent problems involving plant assessment, technology and environment.
Tables of contents:
Thermodynamics. First and second law analysis of thermal cycles and single thermodynamic processes. Cycle and internal efficiencies. Proper use of thermal properties of working fluids (gases, vapours, organic fluids). Combustion and heat transfer in energy systems. Pollutant formation mechanisms:
- General criteria for energy saving and environmental control. Hybrid cycles (with solar or renewable source integration, ORC systems. Etc.)
Fluid Dynamics. Integral and differential equations for mass, energy and momentum conservation as applied to energy and propulsion systems. Flow in turbomachinery components and volumetric systems. Similarity criteria
- Operating curves of turbines and compressors; stage of a turbomachine; aerodynamic study of blade profiles and cascades; flow in radial turbomachines. Overview of fluid-dynamics of reacting systems
- Multistage turbomachinery; mechanical and aerodynamic stresses in turbomachines; unsteady and pulsating flows in variable displacement devices; CFD as applied to flow in turbomachinery
Lessons and numerical exercises.
Textbooks and learning aids:
Didactic Notes available in the Web-Site: Machine Thermodynamics, Integral Fluid-Dynamics Equations, Axial flow compressor and turbine stage, turbomachinery similarity, Differential Fluid-Dynamics Equations and practical examples. Concentrated Solar Power and ORC Systems.
Assessment will be written (open question) and oral.