A 3D unsteady flow analysis in a doubly constricted arterial vessel

B. V. Rathish Kumar, Takami Yamaguchi, H. Liu, R. Himeno

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The aim of this study is to examine the interaction between two mild atherosclerotic proliferations spaced apart by a distance S by analyzing their influence on flow structure, pressure drop and stress field in an arterial vessel under pulsatile flow conditions. This has been achieved numerically by employing a time accurate, cell centered finite volume method in solving the Navier-Stokes equations governing the 3D unsteady flow dynamics in a conceptual model of an multiply constricted arterial vessel. In comparison to the pressure drop across a single stenosis, nearly a 50% increase in the late systolic and early diastolic pressure drops has been observed across the two mild constrictions when they are spaced within a distance of S ≤ 4. When S ≤ 4, more than a 25% reduction in the peak systolic wall shear stress (WSS) on the downstream constriction is noted.

Original languageEnglish
Pages (from-to)351-357
Number of pages7
Issue number3-4
Publication statusPublished - 2002 Sept 18

ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)


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