A new electrode-mesh tomograph for gas-liquid flows

被引：478

作者：

Prasser, HM ^{[1
]}

Bottger, A ^{[1
]}

Zschau, J ^{[1
]}

机构：

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

来源：

FLOW MEASUREMENT AND INSTRUMENTATION | 1998年 / 9卷 / 02期

关键词：

transient gas-liquid flow; gas fraction measurement; fast visualisation; phase distribution; conductivity sensor;

D O I：

10.1016/S0955-5986(98)00015-6

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The paper presents an electrode-mesh tomograph for the high-speed visualisation of transient gas fraction distributions in two-phase flows in pipes. It is based on the measurement of the local instantaneous conductivity of the two-phase mixture. The time resolution of the device is 1024 frames per second. The sensor consists of two electrode grids with 16 electrodes each. This results in 16 x 16 sensitive points, which are equally distributed over the cross-section. The sensor is available in two designs: (1) wire-mesh sensor for lab applications and (2) sensor with enforced electrode rods for high mechanical loads. The device was recently tested in a vertical and a horizontal air-water flow in a pipe of 51.2 mm diameter. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：111 / 119

页数：9

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