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The course aims to give a solid basis of the various terms that appear in acoustics, reflection and transmission. In addition, it is an introductory course on the possibilities to, e.g. using finite elements or boundary elements, do calculations on acoustical problems aiming at reduction of noise. Also, it aims to give an overview of the current research topics in the acoustics section of the Engineering Fluid Dynamics group.
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Course Description
Engineering Acoustics is an introductory course in acoustics. No prior knowledge is necessary. The nature of sound and wave phenomena are explained (wave fronts, interference, reflection, scattering, diffraction, decibels). The equations for propagation of sound in fluids (air) are deduced and solutions to the equations are discussed. The terms impedance, sound energy and intensity will be introduced. The concept of sources of sound will be addressed and sound absorption and sound absorbers will be discussed. In addition, sound in waveguides and sound in enclosures will be covered, as well as structure-borne sound and transmission through partitions. Finite element and boundary element formulations are presented. The course will include a computer assignment to calculate the influence of the fluid on a structure in an acoustical problem (fluid-structure interaction). In addition, experiments will be done to demonstrate the introduced concepts and principles. The students study and try to solve an acoustical problem from industry and/or from a choice of their own. This project will be done in groups of 2 students and can be theoretically or experimentally oriented. Students will need to write a report about the project, give a presentation to fellow students of the Engineering Acoustic course, and do an oral examination about the project and the topics covered in the lectures. In addition, several demonstrations will be given, a.o. in the anechoic windtunnel of the Engineering Fluid Dynamics group.
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