This course provides an introduction to Acoustics. The focus will be on phenomena that are relevant for industrial and transport applications in the contexts of noise pollution and mechanical fatigue due to acoustic-structure interactions.
Lernziel
This course is proposed for Master and PhD students interested in getting knowledge in acoustics. Students will be able to predict sound generation, absorption and propagation using various modeling approaches (analytical, numerical) in configurations that are relevant for practical industrial applications (for example in aeronautics, automotive industry or power plants).
Inhalt
First, orders of magnitudes characterizing sound propagation are reviewed and the constitutive equations for acoustics are derived. Then the different types of sources (monopole/dipole/quadrupole, punctual, non-compact) are introduced and linked to the noise generated by turbulent flows, coherent vortical structures or fluctuating heat release. The scattering of sound by rigid bodies is given in basic configurations. Analytical, experimental and numerical methods used to analyze sound in ducts and rooms are presented (Green functions, Galerkin expansions, Helmholtz solvers, acoustic field reconstruction, state-space formulation). Modeling strategies to predict self-sustained acoustic oscillations driven by reacting and non-reacting flows are given (system stability, describing function analysis). Finally, guidelines to design active and passive control systems are presented.
Skript
Handouts will be distributed during the class
Literatur
Books will be recommended for each chapter
Voraussetzungen / Besonderes
The use of Matlab and Simulink is required in several lessons which will be announced in advance. The students are expected to bring their own laptop with Matlab installed at these dates.
Leistungskontrolle
Information zur Leistungskontrolle (gültig bis die Lerneinheit neu gelesen wird)