151-0215-00L  Introduction to Acoustics, Aeroacoustics and Thermoacoustics

SemesterSpring Semester 2018
LecturersN. Noiray
Periodicityyearly recurring course
Language of instructionEnglish


151-0215-00 GIntroduction to Acoustics, Aeroacoustics and Thermoacoustics3 hrs
Tue09:15-12:00ML J 34.1 »
N. Noiray

Catalogue data

AbstractThis 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. It should be noted that the lecture focuses on the derivation and interpretation of analytical expression to explain various acoustic phenomena.
ObjectiveThis course is proposed for Master and PhD students interested in getting knowledge in acoustics. Students will be able to understand, describe analytically and quantify sound generation, absorption and propagation in configurations that are relevant for practical industrial applications (for example in aeronautics, automotive industry or power plants).
ContentFirst, 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). Modeling strategies to predict self-sustained acoustic oscillations driven by reacting and non-reacting flows are presented. Finally, guidelines to design active and passive control systems are given.
Lecture notesHandouts will be distributed during the class
LiteratureBooks will be recommended for each chapter

Performance assessment

Performance assessment information (valid until the course unit is held again)
Performance assessment as a semester course
ECTS credits4 credits
ExaminersN. Noiray
Typeend-of-semester examination
Language of examinationEnglish
RepetitionA repetition date will be offered in the first two weeks of the semester immediately consecutive.
Additional information on mode of examinationOral examination of 30 minutes

Learning materials

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Offered in

Mechanical Engineering MasterEnergy, Flows and ProcessesWInformation