Numerical analysis of oxygen transport in an aortic vessel

Yutaka Komai, Kazuo Tanishita

Research output: Contribution to journalArticle

Abstract

Oxygen transport to a vessel of an aortic arch was numerically analyzed using the finite volume method. Oxygen delivery to the vessel is achieved through two pathways; one is direct transport from blood flow in the lumen and the other is via the vaso vasorum. The oxygen transport from blood to the vessel consists of several processes; release from hemoglobin, convection to the vessel wall, simple diffusion, and metabolism in the vessel. The blood is assumed to be fully developed and a flow field previously calculated from physiological aortic flow was used for the calculation of concentration fields. Our results show that even under normal physiological conditions, there exists very low O2 tension region in the middle of the vessel tissue. The secondary flow causes to make the minimum of oxygen tension near the inner side of bend. The tension near the inside is 20% less than that of the outside. This nonuniformity of oxygen tension in the circumferential direction may be associated with the localized formation of atherosclerotic lesions.

Original languageEnglish
Pages (from-to)3158-3166
Number of pages9
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume59
Issue number566
Publication statusPublished - 1993 Oct

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numerical analysis
vessels
Numerical analysis
Oxygen
oxygen
oxygen tension
Blood
blood
Hemoglobin
Secondary flow
Finite volume method
Arches
secondary flow
lumens
arches
Metabolism
finite volume method
hemoglobin
metabolism
blood flow

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Numerical analysis of oxygen transport in an aortic vessel. / Komai, Yutaka; Tanishita, Kazuo.

In: Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, Vol. 59, No. 566, 10.1993, p. 3158-3166.

Research output: Contribution to journalArticle

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