Numerical hemodynamics analysis for cerebral aneurysm with porous inserts

Mohammad O. Hamdan, Hashem M. Alargha, Emad Elnajjar, Ali Hilal-Alnaqbi, Amr Elshawarby, Waseem H. Aziz

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

This numerical study uses the ANSYS Fluent Computational Fluid Dynamics (CFD) tool to assess coil parameters that affect the hemodynamics characteristics after aneurysm endovascular coiling. The study focuses on investigating the effect of coils’ compactness and coils’ diameter on the hemodynamics of the blood and mainly on the wall shear stresses (WSS). Using Darcy’s law, a porous media model for fibrous mesh is used to represent the embolic coils space inside an idealized terminal-type cerebral aneurysm model. The results show that as the coil radius increases, the WSS decreases. Also, the results show that as coiled space porosity increases from 0.1 up to 0.9, the inflow rate crossing to the aneurysm increases. Regions with highest compactness are showing the lowest WSS. Our conclusion is that it is better to use larger coil diameters while assuring porosity is kept at low values (lower than 0.2).

Original languageEnglish
Pages (from-to)1439-1448
Number of pages10
JournalJournal of Porous Media
Volume21
Issue number13
DOIs
Publication statusPublished - 2018

Keywords

  • Aneurysm coiling
  • Hemodynamics numerical simulation
  • Porous insert
  • Wall shear stress

ASJC Scopus subject areas

  • Modelling and Simulation
  • Biomedical Engineering
  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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