A parallel sparse algorithm targeting arterial fluid mechanics computations

Murat Manguoglu*, Kenji Takizawa, Ahmed H. Sameh, Tayfun E. Tezduyar

*この研究の対応する著者

研究成果: Article査読

31 被引用数 (Scopus)

抄録

Iterative solution of large sparse nonsymmetric linear equation systems is one of the numerical challenges in arterial fluid-structure interaction computations. This is because the fluid mechanics parts of the fluid + structure block of the equation system that needs to be solved at every nonlinear iteration of each time step corresponds to incompressible flow, the computational domains include slender parts, and accurate wall shear stress calculations require boundary layer mesh refinement near the arterial walls. We propose a hybrid parallel sparse algorithm, domain-decomposing parallel solver (DDPS), to address this challenge. As the test case, we use a fluid mechanics equation system generated by starting with an arterial shape and flow field coming from an FSI computation and performing two time steps of fluid mechanics computation with a prescribed arterial shape change, also coming from the FSI computation. We show how the DDPS algorithm performs in solving the equation system and demonstrate the scalability of the algorithm.

本文言語English
ページ(範囲)377-384
ページ数8
ジャーナルComputational Mechanics
48
3
DOI
出版ステータスPublished - 2011 9月

ASJC Scopus subject areas

  • 計算力学
  • 海洋工学
  • 機械工学
  • 計算理論と計算数学
  • 計算数学
  • 応用数学

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