TURBULENT PIPE-FLOW STUDIED BY TIME-AVERAGED NMR IMAGING - MEASUREMENTS OF VELOCITY PROFILE AND TURBULENT INTENSITY

被引：56

作者：

LI, TQ ^{[1
]}

SEYMOUR, JD ^{[1
]}

POWELL, RL ^{[1
]}

MCCARTHY, KL ^{[1
]}

ODBERG, L ^{[1
]}

MCCARTHY, MJ ^{[1
]}

机构：

[1] UNIV CALIF DAVIS,DEPT BIOL & AGR ENGN,DAVIS,CA 95616

来源：

MAGNETIC RESONANCE IMAGING | 1994年 / 12卷 / 06期

关键词：

TIME-AVERAGED NMR IMAGING; PHASE FLOW ENCODING; TURBULENT PIPE FLOW; MEAN VELOCITY PROFILE; TURBULENCE INTENSITY;

D O I：

10.1016/0730-725X(94)92033-8

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 time-averaged method to obtain quantitative measurements in turbulent flow by phase flow encoding NMR imaging is introduced. With this method time-averaged velocity profiles and turbulence intensities can be determined. Time-averaged velocity profiles for pipe flow of water driven by a constant pressure gradient at Reynolds numbers from 1200 to 9400 were visualized. A precise correlation between the pixel intensity of the time-averaged NMR flow image and the local turbulence intensity of the flow is derived. The measured turbulence intensities are in agreement with published data obtained using other experimental methods.

引用

页码：923 / 934

页数：12

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