Reducing the impact of geometric errors in flow computations using velocity measurements

David Nolte, Cristóbal Bertoglio*

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

6 Citaten (Scopus)
167 Downloads (Pure)


Numerical blood flow simulations are typically set up from anatomical medical images and calibrated using velocity measurements. However, the accuracy of the computational geometry itself is limited by the resolution of the anatomical image. We first show that applying standard no-slip boundary conditions on inaccurately extracted boundaries can cause large errors in the results, in particular the pressure gradient. In this work, we therefore propose to augment the flow model calibration by slip/transpiration boundary conditions, whose parameters are then estimated using velocity measurements. Numerical experiments show that this methodology can considerably improve the accuracy of the estimated pressure gradients and 3D velocity fields when the vessel geometry is uncertain.
Originele taal-2English
Aantal pagina's19
TijdschriftInternational journal for numerical methods in biomedical engineering
Nummer van het tijdschrift6
Vroegere onlinedatum1-apr.-2019
StatusPublished - jun.-2019

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