Scaling laws for wall shear stress through stenoses under steady and pulsatile flow conditions

L.P. Chua, Ching Man Yu, Q. Xue

Research output: Journal article publicationConference articleAcademic researchpeer-review

3 Citations (Scopus)

Abstract

Most patients with atherosclerosis exhibit isolated stenoses of one or more epicardial coronary arteries. The wall shear stresses produced in high-grade stenosis are important in the understanding of atheromatous plaque rupture and thrombosis. This study is designed to establish a method which can be used to scale the different wall shear stresses obtained under different flow conditions to be normalized and subsequently collapsed on to a single general curve. The simulations include both steady and pulsatile flow. The reduced area percentages of the stenoses studied are 50, 75 and 90 per cent. Scaling laws for steady and pulsatile flow conditions are proposed and presented. It can be found from the results that the scaling analysis for pulsatile flow conditions is more complicated than for steady flow conditions and is restricted to, and only valid at, certain time intervals.
Original languageEnglish
Pages (from-to)503-514
Number of pages12
JournalProceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine
Volume215
Issue number5
DOIs
Publication statusPublished - 1 Dec 2001
Externally publishedYes

Keywords

  • Newtonian fluid
  • Pulsatile flow
  • Scaling law
  • Steady flow
  • Stenosis
  • Wall shear stress (WSS)

ASJC Scopus subject areas

  • Medicine(all)
  • Mechanical Engineering

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