Teacher
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DI MARCO ALESSANDRO
(syllabus)
Fundamentals: Mechanics of fluids: Incompressible and compressible conservation laws, dimensional analysis, asymptotic solutions. Sound Field; Wave equation for fluids, speed of sound and acoustic energy; Diffraction; Geometrical acoustics; waves in solids; Sound frequency analysis; Decibel and Sound Pressure Level; Acoustic Filters; Sound fields summation; Interference and frequency contents.
Waves equation Wave equation in a field without sources; Simple and harmonic solutions; Sound Intensity; Energy and specific energy; waves reflection and transmission; Sound generation and transmission mechanisms. Sound sources: Monopole; Dipole; Quadrupole.
Digital signal processing and probability fundamentals.
Acoustic measurement facilities Anechoic chambers; reverberant chambers.
Quantitative measures of sound Mathematics fundamentals; Fourier analysis; Measurements systems; acoustic sources characterization by means of microphone measurements.
Experimental techniques for turbulent flows measurements Hot wire anemometry. Single and multi components; Laser Doppler Anemometry; Particle Image Velocimetry; Laser Induced Fluorescence.
Optical methods for the analysis of density fields Interferometry, Schlieren, Shadowgraph.
Measurements in aerodynamic wind tunnels Pitot tube, pressure transducers, mass flow rate meters, thermal measurements with thermocouples; force measurements with dynamometric balances, acoustic measurements.
(reference books)
P.K. Kundu. Fluid Mechanics. Academic Press, San Diego, USA, 1990.
L. D. Landau and E. M. Lifshitz, Fluid Mechanics 2ed., Course of Theoretical Physics vol. 6, Butterworth-Heinemann (1987)
H.H. Hubbard, editor. Aeroacoustics of Flight Vehicles: Theory and Practice. Volume 1 Noise Sources; Volume 2 Noise Control (Nasa Reference Publication 1258). Acoustical Society of America, 1995.
M.S. Howe. Acoustics of Fluid-Structure Interactions. Cambridge University Press, Cambridge, UK, 1998.
W.K. Blake. Mechanics of Flow-induced Sound and Vibration, Volume I. Academic Press, Orlando, 1986
Thomas J. Mueller, Aeroacoustic Measurements, Springer; 1 edition (2002)
Stavros Tavoularis, Measurement in Fluid Mechanics, Cambridge University Press (2005).
Lecture notes.
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