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Shape and topology optimization of an acoustic horn-lens combination
Uppsala University, Department of Information Technology, Division of Scientific Computing. (UMIT)
Uppsala University, Department of Information Technology, Division of Scientific Computing.
Umeå University, Faculty of Science and Technology, Department of Computing Science. (UMIT)ORCID iD: 0000-0003-0473-3263
2010 (English)In: Journal of Computational and Applied Mathematics, ISSN 0377-0427, E-ISSN 1879-1778, Vol. 234, no 6, 1781-1787 p.Article in journal (Refereed) Published
Abstract [en]

Using gradient-based optimization combined with numerical solutions of the Helmholtz equation, we design an acoustic device with high transmission efficiency and even directivity throughout a two-octave-wide frequency range. The device consists of a horn, whose flare is subject to boundary shape optimization, together with an area in front of the horn, where solid material arbitrarily can be distributed using topology optimization techniques, effectively creating an acoustic lens.

Place, publisher, year, edition, pages
Elsevier , 2010. Vol. 234, no 6, 1781-1787 p.
Keyword [en]
design optimization, helmholtz equation, acoustic horn, acoustic lens
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:umu:diva-40283DOI: 10.1016/j.cam.2009.08.028ISI: 000278570900022OAI: oai:DiVA.org:umu-40283DiVA: diva2:399134
Available from: 2011-02-21 Created: 2011-02-21 Last updated: 2017-12-11

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