Characteristics of Blood Vessel Wall Deformation with Porous Wall Conditions in an Aortic Arch
Blood vessels have been modeled as non-porous structures that are permeable to solutes mixed in the blood. However, the use of non-physiological boundary conditions in numerical simulations that assume atmospheric pressure at the outlet does not illustrate the actual structural physics involved. The...
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doaj-b867ca83a9674eceb1a6bf50ca8fa4bb2021-09-06T19:41:55ZengDe GruyterApplied Rheology1617-81062014-04-01242172410.3933/applrheol-24-24590Characteristics of Blood Vessel Wall Deformation with Porous Wall Conditions in an Aortic ArchCheema Taqi Ahmad0Kim Gyu Man1Lee Choon Young2Hong Jung Goo3Kwak Moon Kyu4Park Cheol Woo5School of Mechanical Engineering, Kyungpook National University, 1370 Sankyuk-dong, Buk-gu,Deagu702-701, South KoreaSchool of Mechanical Engineering, Kyungpook National University, 1370 Sankyuk-dong, Buk-gu,Deagu702-701, South KoreaSchool of Mechanical Engineering, Kyungpook National University, 1370 Sankyuk-dong, Buk-gu,Deagu702-701, South KoreaSchool of Mechanical Engineering, Kyungpook National University, 1370 Sankyuk-dong, Buk-gu,Deagu702-701, South KoreaSchool of Mechanical Engineering, Kyungpook National University, 1370 Sankyuk-dong, Buk-gu,Deagu702-701, South KoreaSchool of Mechanical Engineering, Kyungpook National University, 1370 Sankyuk-dong, Buk-gu,Deagu702-701, South KoreaBlood vessels have been modeled as non-porous structures that are permeable to solutes mixed in the blood. However, the use of non-physiological boundary conditions in numerical simulations that assume atmospheric pressure at the outlet does not illustrate the actual structural physics involved. The presence of pores in the wall influences wall deformation characteristics, which may increase the risk of rupture in specific conditions. In addition, the formation of secondary flows in a curved blood vessel may add complications to the structural behavior of the vessel walls. These reservations can be addressed by a fluid structure interaction-based numerical simulation of a three-dimensional aortic arch with increased physiological velocity and pressure waveforms. The curvature radius of the arch was 30 mm with a uniform aorta diameter of 25 mm. A one-way coupling method was used between physics of porous media flow and structural mechanics. A comparison of results with a non-porous model revealed that the approximated porous model was more prone to hypertension and rupture. Similarly, the secondary flows found to be an important indicator for the vascular compliance that forced the outer aortic region to experience the largest deformation. Consequently, it is very important to use actual physiological situations of the blood vessels to reach a diagnostic solution.https://doi.org/10.3933/applrheol-24-24590aortic archfluid structure interaction (fsi)one-way couplingwall deformationphysiological conditionsporous media |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Cheema Taqi Ahmad Kim Gyu Man Lee Choon Young Hong Jung Goo Kwak Moon Kyu Park Cheol Woo |
spellingShingle |
Cheema Taqi Ahmad Kim Gyu Man Lee Choon Young Hong Jung Goo Kwak Moon Kyu Park Cheol Woo Characteristics of Blood Vessel Wall Deformation with Porous Wall Conditions in an Aortic Arch Applied Rheology aortic arch fluid structure interaction (fsi) one-way coupling wall deformation physiological conditions porous media |
author_facet |
Cheema Taqi Ahmad Kim Gyu Man Lee Choon Young Hong Jung Goo Kwak Moon Kyu Park Cheol Woo |
author_sort |
Cheema Taqi Ahmad |
title |
Characteristics of Blood Vessel Wall Deformation with Porous Wall Conditions in an Aortic Arch |
title_short |
Characteristics of Blood Vessel Wall Deformation with Porous Wall Conditions in an Aortic Arch |
title_full |
Characteristics of Blood Vessel Wall Deformation with Porous Wall Conditions in an Aortic Arch |
title_fullStr |
Characteristics of Blood Vessel Wall Deformation with Porous Wall Conditions in an Aortic Arch |
title_full_unstemmed |
Characteristics of Blood Vessel Wall Deformation with Porous Wall Conditions in an Aortic Arch |
title_sort |
characteristics of blood vessel wall deformation with porous wall conditions in an aortic arch |
publisher |
De Gruyter |
series |
Applied Rheology |
issn |
1617-8106 |
publishDate |
2014-04-01 |
description |
Blood vessels have been modeled as non-porous structures that are permeable to solutes mixed in the blood. However, the use of non-physiological boundary conditions in numerical simulations that assume atmospheric pressure at the outlet does not illustrate the actual structural physics involved. The presence of pores in the wall influences wall deformation characteristics, which may increase the risk of rupture in specific conditions. In addition, the formation of secondary flows in a curved blood vessel may add complications to the structural behavior of the vessel walls. These reservations can be addressed by a fluid structure interaction-based numerical simulation of a three-dimensional aortic arch with increased physiological velocity and pressure waveforms. The curvature radius of the arch was 30 mm with a uniform aorta diameter of 25 mm. A one-way coupling method was used between physics of porous media flow and structural mechanics. A comparison of results with a non-porous model revealed that the approximated porous model was more prone to hypertension and rupture. Similarly, the secondary flows found to be an important indicator for the vascular compliance that forced the outer aortic region to experience the largest deformation. Consequently, it is very important to use actual physiological situations of the blood vessels to reach a diagnostic solution. |
topic |
aortic arch fluid structure interaction (fsi) one-way coupling wall deformation physiological conditions porous media |
url |
https://doi.org/10.3933/applrheol-24-24590 |
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