A qualitative investigation of turbulence in flow through a model abdominal aortic aneurysm.

Abstract:

RATIONALE AND OBJECTIVES:As part of a general examination of the effect of blood flow patterns on the growth and risk of rupture of abdominal aortic aneurysms, the authors investigated the flow through an experimental model of a fusiform aneurysm. MATERIALS AND METHODS:Aneurysms were simulated in polyvinyl chloride tubing. A steady flow of 450 mL/minute to 2 L/minute was investigated by color Doppler flow imaging. RESULTS:Two types of flow patterns existed in the model aneurysm, depending on the overall flow rate through the model. At low velocity flow, this pattern is smooth, steady, and laminar, whereas at higher flows it is irregular and turbulent. CONCLUSION:This finding corresponds to recent clinical observations. The onset of unsteadiness and irregularity in the flow through the model is related to flow velocity.

journal_name

Invest Radiol

journal_title

Investigative radiology

authors

Schrader T,Peattie RA,Bluth EI,Comstock CE

doi

10.1097/00004424-199207000-00008

keywords:

subject

Has Abstract

pub_date

1992-07-01 00:00:00

pages

515-9

issue

7

eissn

0020-9996

issn

1536-0210

journal_volume

27

pub_type

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