<div class="csl-bib-body">
<div class="csl-entry">Heinz, J., & Kaltenbacher, M. (2022). A non-conforming and overlapping DG formulation for the acoustic conservation equations. In <i>Proceedings of 24th International Congress on Acoustics - ICA 2022</i> (pp. 1–8). http://hdl.handle.net/20.500.12708/176710</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/176710
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dc.description.abstract
High-order discontinuous Galerkin (DG) methods are ideally suited to solve the acoustic conservation equations in the time domain. To compute, e.g., the acoustic field originating from a ventilator, it is common to use two mesh regions. One of the regions rotates while the other one stays fixed. To solve this kind of problems, we need implementations that can deal with non-conformities at mesh interfaces. If elements do not precisely represent the geometry, i.e., by using non-uniform rational B-splines, it is not sufficient to utilize non-conforming interfaces alone. Within this work, we show that Nitsches’ idea — which is commonly used at non-conforming interfaces — can be applied for overlapping elements straightforward. Instead of using complex element cut algorithms, we directly use element faces at non-conforming transitions as integration domains. To counteract aliasing, we use over-integration to generate a stable method.
en
dc.language.iso
en
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dc.subject
moving mesh
en
dc.subject
Discontinuous Galerkin
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dc.subject
Non-Matching Grid
en
dc.title
A non-conforming and overlapping DG formulation for the acoustic conservation equations
en
dc.type
Inproceedings
en
dc.type
Konferenzbeitrag
de
dc.contributor.affiliation
Graz University of Technology, Austria
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dc.description.startpage
1
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dc.description.endpage
8
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dc.type.category
Full-Paper Contribution
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tuw.booktitle
Proceedings of 24th International Congress on Acoustics - ICA 2022
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tuw.researchTopic.id
C6
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tuw.researchTopic.name
Modeling and Simulation
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tuw.researchTopic.value
100
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tuw.publication.orgunit
E325-03 - Forschungsbereich Messtechnik und Aktorik
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dc.description.numberOfPages
8
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tuw.author.orcid
0000-0001-5511-8610
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tuw.event.name
24th International Congress on Acoustics (ICA 2022)