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3D simulation of a viscous flow past a compliant model of arteriovenous-graft annastomosis.

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Title: 3D simulation of a viscous flow past a compliant model of arteriovenous-graft annastomosis.
Authors: Bai, Zengding1 (AUTHOR), Zhu, Luoding1 (AUTHOR) luozhu@iupui.edu
Source: Computers & Fluids. Mar2019, Vol. 181, p403-415. 13p.
Subjects: Incompressible flow, Viscous flow, Flow simulations
Abstract: Abstract Hemodialysis is a common treatment for end-stage renal-disease patients to manage their renal failure while awaiting kidney transplant. Arteriovenous graft (AVG) is a major vascular access for hemodialysis but often fails due to the thrombosis near the vein-graft anastomosis. Almost all of the existing computational studies involving AVG assume that the vein and graft are rigid. As a first step to include vein/graft flexibility, we consider an ideal vein-AVG anastomosis model and apply the lattice Boltzmann-immersed boundary (LB-IB) framework for fluid-structure-interaction. The framework is extended to the case of non-uniform Lagrangian mesh for complex structure. After verification and validation of the numerical method and its implementation, many simulations are performed to simulate a viscous incompressible flow past the anastomosis model under pulsatile flow condition using various levels of vein elasticity. Our simulation results indicate that vein compliance may lessen flow disturbance and a more compliant vein experiences less wall shear stress (WSS). [ABSTRACT FROM AUTHOR]
Copyright of Computers & Fluids 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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DbLabel: Engineering Source
An: 135184378
AccessLevel: 6
PubType: Periodical
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  Data: 3D simulation of a viscous flow past a compliant model of arteriovenous-graft annastomosis.
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  Data: <searchLink fieldCode="AR" term="%22Bai%2C+Zengding%22">Bai, Zengding</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhu%2C+Luoding%22">Zhu, Luoding</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> luozhu@iupui.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Computers+%26+Fluids%22">Computers & Fluids</searchLink>. Mar2019, Vol. 181, p403-415. 13p.
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– Name: Abstract
  Label: Abstract
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  Data: Abstract Hemodialysis is a common treatment for end-stage renal-disease patients to manage their renal failure while awaiting kidney transplant. Arteriovenous graft (AVG) is a major vascular access for hemodialysis but often fails due to the thrombosis near the vein-graft anastomosis. Almost all of the existing computational studies involving AVG assume that the vein and graft are rigid. As a first step to include vein/graft flexibility, we consider an ideal vein-AVG anastomosis model and apply the lattice Boltzmann-immersed boundary (LB-IB) framework for fluid-structure-interaction. The framework is extended to the case of non-uniform Lagrangian mesh for complex structure. After verification and validation of the numerical method and its implementation, many simulations are performed to simulate a viscous incompressible flow past the anastomosis model under pulsatile flow condition using various levels of vein elasticity. Our simulation results indicate that vein compliance may lessen flow disturbance and a more compliant vein experiences less wall shear stress (WSS). [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Computers & Fluids 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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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.compfluid.2019.02.006
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      – Code: eng
        Text: English
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        PageCount: 13
        StartPage: 403
    Subjects:
      – SubjectFull: Incompressible flow
        Type: general
      – SubjectFull: Viscous flow
        Type: general
      – SubjectFull: Flow simulations
        Type: general
    Titles:
      – TitleFull: 3D simulation of a viscous flow past a compliant model of arteriovenous-graft annastomosis.
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            NameFull: Bai, Zengding
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            NameFull: Zhu, Luoding
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              Text: Mar2019
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              Y: 2019
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