Title

Simulation of turbulent pulsatile flow past a mechanical heart valve

Document Type

Article

Publication Date

12-1-1996

Department

Mechanical Engineering

Abstract

The thrombogenicity of all mechanical heart valves is primarily due to an activation of platelets. As a blood platelet passes through a mechanical heart valve it is exposed to varying degrees of shear, elongational and turbulent stresses. Numerical simulation of turbulent pulsatile flow through a 2D model of a St. Jude bileaflet valve in the aortic position was obtained, to allow the quantitative examination of the cumulative effects of elevated stresses on the blood platelets. The simulation was used to indicate the potential for stress-induced platelet activation due to anomalous flow patterns produced by the valve, a problem shared by all mechanical heart valves designs in use today.

First Page

285

Last Page

286

Publication Title

American Society of Mechanical Engineers, Bioengineering Division (Publication) BED

Comments

At the time of publication, Richard T. Schoephoerster was affiliated with Florida International University.

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