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An unstructured finite volume approach for structural dynamics in response to fluid motions

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Title: An unstructured finite volume approach for structural dynamics in response to fluid motions
Authors: Xia, Guohua1, Lin, Ching-Long ching-long-lin@uiowa.edu
Source: Computers & Structures. Apr2008, Vol. 86 Issue 7/8, p684-701. 18p.
Subjects: Finite element method, Fluid dynamics, Electrohydrodynamics, Numerical analysis
Abstract: Abstract: A new cell-vortex unstructured finite volume method for structural dynamics is assessed for simulations of structural dynamics in response to fluid motions. A robust implicit dual-time stepping method is employed to obtain time accurate solutions. The resulting system of algebraic equations is matrix-free and allows solid elements to include structure thickness, inertia, and structural stresses for accurate predictions of structural responses and stress distributions. The method is coupled with a fluid dynamics solver for fluid–structure interaction, providing a viable alternative to the finite element method for structural dynamics calculations. A mesh sensitivity test indicates that the finite volume method is at least of second-order accuracy. The method is validated by the problem of vortex-induced vibration of an elastic plate with different initial conditions and material properties. The results are in good agreement with existing numerical data and analytical solutions. The method is then applied to simulate a channel flow with an elastic wall. The effects of wall inertia and structural stresses on the fluid flow are investigated. [Copyright &y& Elsevier]
Copyright of Computers & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 31303262
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: An unstructured finite volume approach for structural dynamics in response to fluid motions
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  Data: <searchLink fieldCode="AR" term="%22Xia%2C+Guohua%22">Xia, Guohua</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lin%2C+Ching-Long%22">Lin, Ching-Long</searchLink><i> ching-long-lin@uiowa.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Computers+%26+Structures%22">Computers & Structures</searchLink>. Apr2008, Vol. 86 Issue 7/8, p684-701. 18p.
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  Data: <searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+dynamics%22">Fluid dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Electrohydrodynamics%22">Electrohydrodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Numerical+analysis%22">Numerical analysis</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Abstract: A new cell-vortex unstructured finite volume method for structural dynamics is assessed for simulations of structural dynamics in response to fluid motions. A robust implicit dual-time stepping method is employed to obtain time accurate solutions. The resulting system of algebraic equations is matrix-free and allows solid elements to include structure thickness, inertia, and structural stresses for accurate predictions of structural responses and stress distributions. The method is coupled with a fluid dynamics solver for fluid–structure interaction, providing a viable alternative to the finite element method for structural dynamics calculations. A mesh sensitivity test indicates that the finite volume method is at least of second-order accuracy. The method is validated by the problem of vortex-induced vibration of an elastic plate with different initial conditions and material properties. The results are in good agreement with existing numerical data and analytical solutions. The method is then applied to simulate a channel flow with an elastic wall. The effects of wall inertia and structural stresses on the fluid flow are investigated. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Computers & Structures is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.compstruc.2007.07.008
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      – Code: eng
        Text: English
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        PageCount: 18
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    Subjects:
      – SubjectFull: Finite element method
        Type: general
      – SubjectFull: Fluid dynamics
        Type: general
      – SubjectFull: Electrohydrodynamics
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      – SubjectFull: Numerical analysis
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      – TitleFull: An unstructured finite volume approach for structural dynamics in response to fluid motions
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            NameFull: Xia, Guohua
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            NameFull: Lin, Ching-Long
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              Text: Apr2008
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              Y: 2008
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              Value: 86
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              Value: 7/8
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