Computational flow analysis with boundary layer and contact representation: II. Heart valve flow with leaflet contact

Takuya Terahara, Takashi Kuraishi, Kenji Takizawa*, Tayfun E. Tezduyar

*この研究の対応する著者

研究成果: Review article査読

1 被引用数 (Scopus)

抄録

In this second part of a two-part article, we provide an overview of the heart valve flow analyses conducted with boundary layer and contact representation, made possible with the space-time (ST) computational methods described in the first part. With these ST methods, we are able to represent the boundary layers near moving solid surfaces, including the valve leaflet surfaces, with the accuracy one gets from moving-mesh methods and without the need for leaving a mesh protection gap between the surfaces coming into contact. The challenge of representing the contact between the leaflets without giving up on high-resolution flow representation near the leaflet surfaces has been overcome. The other challenges that have been overcome include the complexities of a near-actual valve geometry, having in the computational model a left ventricle with an anatomically realistic motion and an aorta from CT scans and maintaining the flow stability at the inflow of the ventricle-valve-aorta sequence, where we have a traction boundary condition during part of the cardiac cycle.

本文言語English
ページ(範囲)185-194
ページ数10
ジャーナルJournal of Mechanics
38
DOI
出版ステータスPublished - 2022

ASJC Scopus subject areas

  • 凝縮系物理学
  • 機械工学
  • 応用数学

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