Energy Engineering

EXPERIMENTAL FLUID MECHANICS SYLLABUS (Prof. G.P. Romano) 1. BASIC MEASUREMENT SYSTEMS Pressure measurements. Velocity measurements: Pitot tube. Temperature measurements. Flow Visualization. 2. SISTEMI DI MISURA AVANZATI Velocity field measurements: Ultrasound Anemometry. Image analysis methods: Particle Image Velocimetry (PIV). Advanced procedures for PIV image analysis. Pre and post-processing of images. Flow structure identification. 3. FLUID MECHANIC SIGNALS 3.1 Probability functions. 3.2 Statistical moments. 3.3 Auto-correlation function. 3.4 Turbulent flow scales. 3.5 Spectral density functions. LABORATORY PRACTICE 1) Signal and data processing 2) Ultrasound Anemometry (UA) 3) Particle Image Velocimetry (PIV) 4) Flow Visualization 5) Wind turbine in Wind Tunnel 6) Impact of a Jet on Plates 7) Head Losses in Facilities 8) Drag on different Models

Basic Fluid-Mechanics: definition and equations; simplified equations Aerodinamics of blade sections Elements of statistical analysis

Lecture notes, available on the website ELEARNING2 (in English) Books and scientific papers suggested for comparisons and comments of acquired data

It is mandatoty to be actively present in laboratory during the practices

Teaching results: knowledge and ability to use advanced experimental techniques for fluid-mechanics and aerodynamics measurements with specific reference to optical non-intrusive teechniques; knowledge and ability to use small and middle scale facilities as wind tunnels and water channels. Evaluation: based on reports of laboratory activities and practice with a total number of 5 reports, each one contributing around 20% of the final mark, being edited by the team doing the laboratory practices. Evaluation methods: the ability to describe objectives, procedures, results with related measurement errors and comparison with available theoretical, numerical and experimental results, given in the references, are evaluated. Evaluation criteria: report getting sufficient, average, good or excellent description.

References: AA.VV., Handbook of Experimental Fluid Mechanics, Springer-Verlag, 2007 W. Merzkirch, Flow Visualization, Academic Press, 1987 F. Mayinger, Optical Measurements, Springer-Verlag, 1995 J. Kompenhans & P. Raffel, PIV: a Practical Guide, Springer-Verlag, 2001 A.V. Oppenheim, R.W. Schafer, Elaborazione numerica dei segnali, Angeli, 1990 J.S. Bendat, A.G. Piersol, Random Data: Analysis and Measurement, Wiley, 1971 H. Tennekes, J.L. Lumley, A First Course in Turbulence, MIT Press, 1972

The course is subdivided into classroom lessons, in which definitions, working procedures of each laboratory practice, expected results and possible comparisons are presented, and laboratory practices, in which students, divided in groups, work on facilities and measurement systems, to get data to be compared with presented references. This subdivision is roughly around 30% and 70% respectively. Results are presented in form of tables and plots, to be included in technical reports, developed by the student groups in collaboration with the teacher.

EXPERIMENTAL FLUID MECHANICS SYLLABUS (Prof. G.P. Romano) 1. BASIC MEASUREMENT SYSTEMS Pressure measurements. Velocity measurements: Pitot tube. Temperature measurements. Flow Visualization. 2. SISTEMI DI MISURA AVANZATI Velocity field measurements: Ultrasound Anemometry. Image analysis methods: Particle Image Velocimetry (PIV). Advanced procedures for PIV image analysis. Pre and post-processing of images. Flow structure identification. 3. FLUID MECHANIC SIGNALS 3.1 Probability functions. 3.2 Statistical moments. 3.3 Auto-correlation function. 3.4 Turbulent flow scales. 3.5 Spectral density functions. LABORATORY PRACTICE 1) Signal and data processing 2) Ultrasound Anemometry (UA) 3) Particle Image Velocimetry (PIV) 4) Flow Visualization 5) Wind turbine in Wind Tunnel 6) Impact of a Jet on Plates 7) Head Losses in Facilities 8) Drag on different Models

Basic Fluid-Mechanics: definition and equations; simplified equations Aerodinamics of blade sections Elements of statistical analysis

Lecture notes, available on the website ELEARNING2 (in English) Books and scientific papers suggested for comparisons and comments of acquired data

It is mandatoty to be actively present in laboratory during the practices

Teaching results: knowledge and ability to use advanced experimental techniques for fluid-mechanics and aerodynamics measurements with specific reference to optical non-intrusive teechniques; knowledge and ability to use small and middle scale facilities as wind tunnels and water channels. Evaluation: based on reports of laboratory activities and practice with a total number of 5 reports, each one contributing around 20% of the final mark, being edited by the team doing the laboratory practices. Evaluation methods: the ability to describe objectives, procedures, results with related measurement errors and comparison with available theoretical, numerical and experimental results, given in the references, are evaluated. Evaluation criteria: report getting sufficient, average, good or excellent description.

References: AA.VV., Handbook of Experimental Fluid Mechanics, Springer-Verlag, 2007 W. Merzkirch, Flow Visualization, Academic Press, 1987 F. Mayinger, Optical Measurements, Springer-Verlag, 1995 J. Kompenhans & P. Raffel, PIV: a Practical Guide, Springer-Verlag, 2001 A.V. Oppenheim, R.W. Schafer, Elaborazione numerica dei segnali, Angeli, 1990 J.S. Bendat, A.G. Piersol, Random Data: Analysis and Measurement, Wiley, 1971 H. Tennekes, J.L. Lumley, A First Course in Turbulence, MIT Press, 1972

The course is subdivided into classroom lessons, in which definitions, working procedures of each laboratory practice, expected results and possible comparisons are presented, and laboratory practices, in which students, divided in groups, work on facilities and measurement systems, to get data to be compared with presented references. This subdivision is roughly around 30% and 70% respectively. Results are presented in form of tables and plots, to be included in technical reports, developed by the student groups in collaboration with the teacher.