Experimental two-phase flow measurement using ultra fast limited-angle-type electron beam X-ray computed tomography

被引：36

作者：

Bieberle, M. ^{[1
]}

Fischer, F. ^{[1
]}

Schleicher, E. ^{[1
]}

Koch, D. ^{[2
]}

Menz, H. -J. ^{[2
]}

Mayer, H. -G. ^{[2
]}

Hampel, U. ^{[1
]}

机构：

[1] Forschungszentrum Dresden Rossendorf eV, Inst Safety Res, D-01314 Dresden, Germany

[2] Univ Stuttgart, Inst Nucl Energy Technol & Energy Syst, D-70569 Stuttgart, Germany

来源：

EXPERIMENTS IN FLUIDS | 2009年 / 47卷 / 03期

关键词：

WIRE-MESH SENSORS; SYSTEM; PIPE;

D O I：

10.1007/s00348-009-0617-6

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

An experimental evaluation of a novel limited-angle-type ultra fast electron beam X-ray computed tomography approach for the visualization and measurement of a gas-liquid two-phase flow is reported here. With this method, a simple linear electron beam scan is used to produce instantaneous radiographic views of a two-phase flow in a pipe segment of a flow loop. Electron beam scanning can be performed very rapidly, thus a frame rate of 5 kHz is achieved. Radiographic projections are recorded by a very fast detector arc made of zink-cadmium-telluride elements. This detector records the X-ray radiation passing through the object with a sampling rate of 1 MHz. The reconstruction of slice images from the recorded detector data is a limited-angle problem since in our scanning geometry the object's Radon space is only incompletely sampled. It was investigated here, whether this technology is able to produce accurate gas fraction data from bubbly two-phase flow. Experiments were performed both on a Perspex phantom with known geometry and an experimental flow loop operated under vacuum conditions in an electron beam processing box.

引用

页码：369 / 378

页数：10

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