Flow speed measurement and rheometry by pulsed neutron activation

Flow speed measurement and rheometry by pulsed neutron activation
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通过脉冲中子激活进行流速测量和流变测量

DOI：
10.1115/1.3243649
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发表时间：
1989
期刊：
--
影响因子：
--
通讯作者：
C. Kampschoer
C. Kampschoer
中科院分区：
--
文献类型：
--
作者：
K. Porges;S. Cox;C. Herzenberg;C. Kampschoer

文献摘要

被引文献

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脉冲中子激活 (PNA) 是一种无创流速测量方法，其基础是用短寿命放射性标记流动介质。以前使用盐或染料标记的工作表明，当使用传统数据处理时，湍流的准确性较差，并且在层流中失败。然而，使用基于标签分散模型的数据采集和处理方案可以在各种流速和流态下以高精度产生绝对值。对于非牛顿/层流，还可以获得流变信息。 PNA 标记固有的非侵入性使得该方案可用于浆料测量。
Pulsed Neutron Activation (PNA) is a means of noninvasive flow velocity measurement based on tagging the flowing medium with a short-lived radioactivity. Previous work with salt or dye-tagging showed poor accuracy in turbulent and failed in laminar flow when conventional data processing was used. However, use of a data acquisition and processing scheme that is based on tag dispersion modelling can produce absolute values over a wide range of flow speeds and regimes with high accuracy. For non-Newtonian/laminar flow, rheological information can also be obtained. The inherently non-intrusive nature of PNA tagging makes this scheme available for slurry measurements.