In this thesis, we discuss the mathematical formulation of active acoustic cloaking strategies which make use of radiating sources with specified amplitudes to nullify the scattering from an object due to an incoming acoustic wave. We present a model which takes into account the effect of the sizes of the active sources on the performance of a cloaking device that minimises the total acoustic power radiated. We also derive a three-dimensional model for a cloaking strategy that eliminates the scattered field by shielding the object from the incident wave inside a silent region. The active sources that create the silent region are arranged in the shape of Platonic solids. We show that this arrangement provide an efficient means for computing the source amplitudes due to the symmetries of the source distribution.
| Date of Award | 31 Dec 2022 |
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| Original language | English |
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| Awarding Institution | - The University of Manchester
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| Supervisor | William Parnell (Supervisor) & Tom Shearer (Supervisor) |
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Active Noise Control
Yeung, C. H. (Author). 31 Dec 2022
Student thesis: Phd