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The influence of the upstream boundary condition in the numerical simulation of the opening of an aortic BMHV

Sebastiaan Annerel, Joris Degroote UGent, Tom Claessens UGent, Peter Van Ransbeeck UGent, Patrick Segers UGent, Pascal Verdonck UGent and Jan Vierendeels UGent (2011) Conference proceedings CMBE11. p.107-110
abstract
In this paper, the influence of the upstream boundary condition for the numerical simulation of an aortic Bileaflet Mechanical Heart Valve (BMHV) is studied. Two types of upstream boundary conditions are discussed and evaluated. First, an inflow velocity profile is imposed at the inlet of the valve. Secondly, a geometrical boundary condition is used, which implies that the flow rate is governed by the geometrical contraction of the left-ventricle (LV). Both boundary conditions are used to simulate a 3D case with the same BMHV. The change in time of the LV volume is calculated such that the flow rate through the valve is identical in both cases. The dynamics of the BMHV are modelled using fluid-structure interaction (FSI) and only the opening phase of the valve is simulated. The simulations show that although the results for the two cases are similar, differences occur in the leaflet movement. In particular, when using the velocity profile, the leaflets impact the blocking mechanism at their open position with a 25% larger angular velocity. Therefore, when one wants to simulate the dynamics of such an impact, the upstream boundary condition needs to be chosen carefully.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
keyword
FSI, Left-ventricle, Bileaflet Mechanical Heart Valve, Boundary condition
in
Conference proceedings CMBE11
editor
Perumal Nithiarasu, Rainald Löhner, Raoul van Loon, Igor Sazonov and Xianghua Xie
pages
107 - 110
publisher
All American Printing
place of publication
Alexandria, VA, USA
conference name
2nd International Conference on Computational & Mathematical Biomedical Engineering (CMBE - 2011)
conference location
Washington DC, USA
conference start
2011-03-30
conference end
2011-04-01
ISBN
9780956291417
language
English
UGent publication?
yes
classification
C1
copyright statement
I have transferred the copyright for this publication to the publisher
id
1257438
handle
http://hdl.handle.net/1854/LU-1257438
alternative location
http://www.cs.swan.ac.uk/~csjason/cmbe2011.pdf
date created
2011-06-08 11:30:33
date last changed
2017-01-02 09:53:15
@inproceedings{1257438,
  abstract     = {In this paper, the influence of the upstream boundary condition for the numerical simulation of an aortic Bileaflet Mechanical Heart Valve (BMHV) is studied. Two types of upstream boundary conditions are discussed and evaluated. First, an inflow velocity profile is imposed at the inlet of the valve. Secondly, a geometrical boundary condition is used, which implies that the flow rate is governed by the geometrical contraction of the left-ventricle (LV). Both boundary conditions are used to simulate a 3D case with the same BMHV. The change in time of the LV volume is calculated such that the flow rate through the valve is identical in both cases. The dynamics of the BMHV are modelled using fluid-structure interaction (FSI) and only the opening phase of the valve is simulated. The simulations show that although the results for the two cases are similar, differences occur in the leaflet movement. In particular, when using the velocity profile, the leaflets impact the blocking mechanism at their open position with a 25\% larger angular velocity. Therefore, when one wants to simulate the dynamics of such an impact, the upstream boundary condition needs to be chosen carefully.},
  author       = {Annerel, Sebastiaan and Degroote, Joris and Claessens, Tom and Van Ransbeeck, Peter and Segers, Patrick and Verdonck, Pascal and Vierendeels, Jan},
  booktitle    = {Conference proceedings CMBE11},
  editor       = {Nithiarasu, Perumal and L{\"o}hner, Rainald and van Loon, Raoul and Sazonov, Igor and Xie, Xianghua},
  isbn         = {9780956291417},
  keyword      = {FSI,Left-ventricle,Bileaflet Mechanical Heart Valve,Boundary condition},
  language     = {eng},
  location     = {Washington DC, USA},
  pages        = {107--110},
  publisher    = {All American Printing},
  title        = {The influence of the upstream boundary condition in the numerical simulation of the opening of an aortic BMHV},
  url          = {http://www.cs.swan.ac.uk/{\texttildelow}csjason/cmbe2011.pdf},
  year         = {2011},
}

Chicago
Annerel, Sebastiaan, Joris Degroote, Tom Claessens, Peter Van Ransbeeck, Patrick Segers, Pascal Verdonck, and Jan Vierendeels. 2011. “The Influence of the Upstream Boundary Condition in the Numerical Simulation of the Opening of an Aortic BMHV.” In Conference Proceedings CMBE11, ed. Perumal Nithiarasu, Rainald Löhner, Raoul van Loon, Igor Sazonov, and Xianghua Xie, 107–110. Alexandria, VA, USA: All American Printing.
APA
Annerel, S., Degroote, J., Claessens, T., Van Ransbeeck, P., Segers, P., Verdonck, P., & Vierendeels, J. (2011). The influence of the upstream boundary condition in the numerical simulation of the opening of an aortic BMHV. In Perumal Nithiarasu, R. Löhner, R. van Loon, I. Sazonov, & X. Xie (Eds.), Conference proceedings CMBE11 (pp. 107–110). Presented at the 2nd International Conference on Computational & Mathematical Biomedical Engineering (CMBE - 2011), Alexandria, VA, USA: All American Printing.
Vancouver
1.
Annerel S, Degroote J, Claessens T, Van Ransbeeck P, Segers P, Verdonck P, et al. The influence of the upstream boundary condition in the numerical simulation of the opening of an aortic BMHV. In: Nithiarasu P, Löhner R, van Loon R, Sazonov I, Xie X, editors. Conference proceedings CMBE11. Alexandria, VA, USA: All American Printing; 2011. p. 107–10.
MLA
Annerel, Sebastiaan, Joris Degroote, Tom Claessens, et al. “The Influence of the Upstream Boundary Condition in the Numerical Simulation of the Opening of an Aortic BMHV.” Conference Proceedings CMBE11. Ed. Perumal Nithiarasu et al. Alexandria, VA, USA: All American Printing, 2011. 107–110. Print.