Three-dimensional analysis of left ventricular ejection using computational fluid dynamics

Tad W. Taylor, Haruka Okino, Takami Yamaguchi

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

We present in this study a method for constructing computational fluid mechanical models in order to study the effects of time-varying left ventricular ejection. A spherical left ventricular model was implemented in which three dimensional flow fields were obtained. The time course of the ventricular wall changes were assumed to have a trigonometrically varying nature. The wall grid was reformed 25 times during the calculation since the left ventricular wall motion was assumed to follow the blood flow, and the ventricle wall radius was reduced by 60 percent in 0.25 seconds. Centerline and cross-sectional velocity vectors greatly increased in magnitude at the aortic outlet, and pressure dropped from l.17×104 dynes/cm2 (8.8 mmHg) to zero in the top 10 percent of the heart. The modeling framework will be used with left ventricular cast data coordinates in future studies. There is presently a lack of three-dimensional data based on a realistic model, and the computational method should make it possible to compare simulation results with important measurement techniques such as echocardiography and magnetic resonance imaging.

Original languageEnglish
Pages (from-to)127-130
Number of pages4
JournalJournal of Biomechanical Engineering
Volume116
Issue number1
DOIs
Publication statusPublished - 1994 Feb

ASJC Scopus subject areas

  • Biomedical Engineering
  • Physiology (medical)

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