Visualization of Taylor-Couette and spiral Poiseuille flows using a snapshot FLASH spatial tagging sequence.

Abstract:

:A new magnetic resonance imaging technique was applied to the Taylor-Couette and spiral Poiseuille (Taylor-Couette with superposed mean axial flux) flows for the first time. The experimental technique is a combination of spatial tagging methods and a snapshot FLASH imaging sequence, which allows the full-field visualization of 2-D slices of the flow field, with image acquisition times approximately half a second. By acquiring images every few seconds, direct visualization of flow patterns can be obtained in the form of cinematography. Tagged images of the Taylor-Couette flow were acquired in both the axial and transverse planes and confirmed previously reported numerical predictions of Taylor cell size. Tagged images of the spiral Poiseuille flows verified that the cells in this flow propagate at a higher velocity than the mean axial flow. In addition, intermittent cell formation was observed as the axial flow was increased.

journal_name

Magn Reson Imaging

authors

Moser KW,Raguin LG,Harris A,Morris HD,Georgiadis J,Shannon M,Philpott M

doi

10.1016/s0730-725x(99)00121-6

subject

Has Abstract

pub_date

2000-02-01 00:00:00

pages

199-207

issue

2

eissn

0730-725X

issn

1873-5894

pii

S0730-725X(99)00121-6

journal_volume

18

pub_type

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