Rapid MRI and velocimetry of cylindrical Couette flow

被引:37
作者
Hanlon, AD [1 ]
Gibbs, SJ [1 ]
Hall, LD [1 ]
Haycock, DE [1 ]
Frith, WJ [1 ]
Ablett, S [1 ]
机构
[1] Univ Cambridge, Herchel Smith Lab Med Chem, Sch Clin Med, Cambridge CB2 2PZ, England
基金
英国工程与自然科学研究理事会;
关键词
nuclear magnetic resonance (NMR); flow imaging; velocimetry; Couette flow;
D O I
10.1016/S0730-725X(98)00089-7
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
A narrow-gap, temperature-controlled Couette flow rheometer has been developed to study fluid velocities within the annular gap between two concentric cylinders by nuclear magnetic resonance (NMR) imaging and velocimetry, Alternative pulsed-field-gradient-based nuclear magnetic resonance imaging strategies which may be used for measurement of velocity within the Couette flow device have been evaluated. These include two-dimensional (2-D) imaging techniques with acquisition times of several minutes and a one-dimensional (1-D) projection method which exploits the symmetry of the device to reduce overall measurement time to less than 1 min. Velocity measurements made using each technique are presented for a Newtonian fluid undergoing Couette Bow at shear rates of approximately 20 and 60 s(-1). (C) 1998 Elsevier Science Inc.
引用
收藏
页码:953 / 961
页数:9
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