An efficient finite element model for viscothermal acoustics

Research output: Contribution to journalArticleAcademicpeer-review

18 Citations (Scopus)

Abstract

Standard isentropic acoustic models do not include the dissipative effects of viscous friction and heat conduction. These viscothermal effects can be important, for example in models of small acoustic transducers. Viscothermal acoustics can be modeled in arbitrary geometries with models that contain four or five coupled fields. Therefore, these fully coupled models are computationally costly. On the other hand, efficient approximate viscothermal acoustic models exist, but these are only applicable to certain simplified geometries. A new approximate model is presented which fills the gap between these two extremes. This new model can be used for arbitrary geometries and has a computational efficiency which is higher than the full model and lower than the models with geometrical constraints. The new model is derived and demonstrated on several problems, including acoustic-structure interaction problems
Original languageEnglish
Pages (from-to)618-631
Number of pages13
JournalAcustica united with Acta Acustica
Volume97
Issue number4
DOIs
Publication statusPublished - 2011

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acoustics
geometry
Acoustics
conductive heat transfer
transducers
friction
conduction
Geometry
interactions

Keywords

  • IR-78137
  • METIS-272390

Cite this

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title = "An efficient finite element model for viscothermal acoustics",
abstract = "Standard isentropic acoustic models do not include the dissipative effects of viscous friction and heat conduction. These viscothermal effects can be important, for example in models of small acoustic transducers. Viscothermal acoustics can be modeled in arbitrary geometries with models that contain four or five coupled fields. Therefore, these fully coupled models are computationally costly. On the other hand, efficient approximate viscothermal acoustic models exist, but these are only applicable to certain simplified geometries. A new approximate model is presented which fills the gap between these two extremes. This new model can be used for arbitrary geometries and has a computational efficiency which is higher than the full model and lower than the models with geometrical constraints. The new model is derived and demonstrated on several problems, including acoustic-structure interaction problems",
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author = "W.R. Kampinga and Wijnant, {Ysbrand H.} and {de Boer}, Andries",
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An efficient finite element model for viscothermal acoustics. / Kampinga, W.R.; Wijnant, Ysbrand H.; de Boer, Andries.

In: Acustica united with Acta Acustica, Vol. 97, No. 4, 2011, p. 618-631.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - An efficient finite element model for viscothermal acoustics

AU - Kampinga, W.R.

AU - Wijnant, Ysbrand H.

AU - de Boer, Andries

PY - 2011

Y1 - 2011

N2 - Standard isentropic acoustic models do not include the dissipative effects of viscous friction and heat conduction. These viscothermal effects can be important, for example in models of small acoustic transducers. Viscothermal acoustics can be modeled in arbitrary geometries with models that contain four or five coupled fields. Therefore, these fully coupled models are computationally costly. On the other hand, efficient approximate viscothermal acoustic models exist, but these are only applicable to certain simplified geometries. A new approximate model is presented which fills the gap between these two extremes. This new model can be used for arbitrary geometries and has a computational efficiency which is higher than the full model and lower than the models with geometrical constraints. The new model is derived and demonstrated on several problems, including acoustic-structure interaction problems

AB - Standard isentropic acoustic models do not include the dissipative effects of viscous friction and heat conduction. These viscothermal effects can be important, for example in models of small acoustic transducers. Viscothermal acoustics can be modeled in arbitrary geometries with models that contain four or five coupled fields. Therefore, these fully coupled models are computationally costly. On the other hand, efficient approximate viscothermal acoustic models exist, but these are only applicable to certain simplified geometries. A new approximate model is presented which fills the gap between these two extremes. This new model can be used for arbitrary geometries and has a computational efficiency which is higher than the full model and lower than the models with geometrical constraints. The new model is derived and demonstrated on several problems, including acoustic-structure interaction problems

KW - IR-78137

KW - METIS-272390

U2 - 10.3813/AAA.918442

DO - 10.3813/AAA.918442

M3 - Article

VL - 97

SP - 618

EP - 631

JO - Acustica united with Acta Acustica

JF - Acustica united with Acta Acustica

SN - 1610-1928

IS - 4

ER -