A new electrode-mesh tomograph for gas-liquid flows

被引：470
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.
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页码：111 / 119
页数：9
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