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Peer-reviewedCC BY 4.0Biocybernetics and Biomedical Engineering

Numerical investigations on the impact of aortic arch inclusion on hemodynamics of abdominal healthy and aneurysmal aorta

  • Xinyi Han
  • Mathieu Specklin
  • Smaïne Kouidri
  • Louise Koskas
  • Farid Bakir
  • Jean-Michel Davaine
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Abstract

This numerical study evaluates the impact of including the aortic arch in in-vivo and in-silico studies, by comparing an abdominal healthy aorta model to an aneurysmal one. CFD simulations were performed using OpenFOAM, with patient-specific blood flow data. Wall shear stress indices (TAWSS, OSI, RRT) and vortex distributions (Q criterion) were analyzed. The results show that the aortic arch amplifies blood flow disturbances, leading to a reduction in TAWSS and an increase in OSI, which may enhance the risk of potential thrombosis. Simplified models without the arch underestimate these effects. The influence of the aortic arch is more pronounced in the abdominal healthy aorta than in the abdominal aortic aneurysm, highlighting the importance of including it in hemodynamic simulations for a more accurate risk assessment.

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Cite

BibTeXRIS
BibTeX
@article{han2026numerical,
  title = {{Numerical investigations on the impact of aortic arch inclusion on hemodynamics of abdominal healthy and aneurysmal aorta}},
  author = {Xinyi Han and Mathieu Specklin and Smaïne Kouidri and Louise Koskas and Farid Bakir and Jean-Michel Davaine},
  journal = {Biocybernetics and Biomedical Engineering},
  year = {2026},
  month = sep,
  doi = {10.1016/j.bbe.2025.12.003},
  url = {https://hal.science/hal-05768941v1},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Numerical investigations on the impact of aortic arch inclusion on hemodynamics of abdominal healthy and aneurysmal aorta
AU  - Xinyi Han
AU  - Mathieu Specklin
AU  - Smaïne Kouidri
AU  - Louise Koskas
AU  - Farid Bakir
AU  - Jean-Michel Davaine
PY  - 2026
DA  - 2026/09/29
JO  - Biocybernetics and Biomedical Engineering
DO  - 10.1016/j.bbe.2025.12.003
UR  - https://hal.science/hal-05768941v1
AB  - This numerical study evaluates the impact of including the aortic arch in in-vivo and in-silico studies, by comparing an abdominal healthy aorta model to an aneurysmal one. CFD simulations were performed using OpenFOAM, with patient-specific blood flow data. Wall shear stress indices (TAWSS, OSI, RRT) and vortex distributions (Q criterion) were analyzed. The results show that the aortic arch amplifies blood flow disturbances, leading to a reduction in TAWSS and an increase in OSI, which may enhance the risk of potential thrombosis. Simplified models without the arch underestimate these effects. The influence of the aortic arch is more pronounced in the abdominal healthy aorta than in the abdominal aortic aneurysm, highlighting the importance of including it in hemodynamic simulations for a more accurate risk assessment.
SN  - 0208-5216
ER  -