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Optimization of a variable mouth acoustic horn
Department of Information Technology, Uppsala University.
Umeå University, Faculty of Science and Technology, Department of Computing Science. (UMIT)
Umeå University, Faculty of Science and Technology, Department of Computing Science. (UMIT)ORCID iD: 0000-0003-0473-3263
2011 (English)In: International Journal for Numerical Methods in Engineering, ISSN 0029-5981, E-ISSN 1097-0207, Vol. 85, no 5, 591-606 p.Article in journal (Refereed) Published
Abstract [en]

By using boundary shape optimization on the end part of a semi-infinite waveguide for acoustic waves, we design transmission-efficient interfacial devices without imposing an upper bound on the mouth diameter. The boundary element method solves the Helmholtz equation modeling the exterior wave propagation problem. A gradient-based optimization algorithm solves the resulting least-squares problem and the adjoint method provides the necessary gradients. The results demonstrate that there appears to be a natural limit on the optimal mouth diameter.

Place, publisher, year, edition, pages
Wiley , 2011. Vol. 85, no 5, 591-606 p.
Keyword [en]
shape optimization, helmholtz equation, boundary element method, adjoint method, acoustic horns
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:umu:diva-40276DOI: 10.1002/nme.2982OAI: oai:DiVA.org:umu-40276DiVA: diva2:399115
Available from: 2011-02-21 Created: 2011-02-21 Last updated: 2017-12-11

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