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首页> 外文会议>2012 IEEE International Conference on Imaging Systems and Techniques >Two phase flow visualization in an annular tube by an Electrical Resistance Tomography
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Two phase flow visualization in an annular tube by an Electrical Resistance Tomography

机译：电阻层析成像显示环形管中的两相流

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摘要

Phase distribution within an annular channel is desired to know as precise as possible for industrial processes like cooling system and etc. Electrical Resistance Tomography (ERT) can be used to achieve this task since it is a non-invasive visualization technique. However, the internal structure which forms the annulus with the pipe wall makes the reconstruction of phase distribution different from the conventional application of ERT, especially when the diameter of the internal structure is big. The case of a non-conductive internal structure with the diameter ratio of 0.76 is studied on the electric field distribution and sensitivity distribution. Small bubbles within the annulus and a stratified flow occupied half of the cross section are numerically simulated and reconstructed with one-step Gauss-Newton method which provides good resolution on the bubbles location but overestimates their size.
机译：对于诸如冷却系统等的工业过程，希望尽可能精确地了解环形通道内的相分布。由于它是一种非侵入性的可视化技术，因此可以使用电阻层析成像（ERT）来完成此任务。然而，与管壁形成环形空间的内部结构使得相分布的重建与ERT的常规应用不同，特别是当内部结构的直径较大时。研究了直径比为0.76的非导电内部结构的情况，研究了电场分布和灵敏度分布。用一步式高斯-牛顿法对环形空间内的小气泡和分层流占据了横截面的一半进行了数值模拟和重构，该方法可以很好地解析气泡的位置，但高估了气泡的大小。

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