Novel ultrasound array measurement system for flow mapping of complex liquid metal flows
Novel ultrasound array measurement system for flow mapping of complex liquid metal flows
复制标题
用于复杂液态金属流流图的新型超声阵列测量系统
DOI：
10.1140/epjst/e2013-01795-1
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
J. Czarske
中科院分区：
文献类型：
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作者：
R. Nauber;M. Burger;L. Büttner;S. Franke;D. Räbiger;S. Eckert;J. Czarske
在磁流体力学中，通常通过模型实验来研究磁场与导电流体之间的相互作用。现有的用于不透明流体的流动仪器通常缺乏一次捕获和可视化速度场的能力。我们提出了一种多维超声阵列多普勒测速仪，它使用多个换能器线阵，并允许在复杂流动中分辨小尺度结构。该系统实现了高达3 mm的横向分辨率，轴向分辨率约为3 mm。在室温下的金属熔体中，1.4 mm和高达30赫兹的帧速率。灵活的传感器布置允许各种测量配置，例如，可以用一个速度分量同时测量四个平面，用两个分量同时测量两个平面，或者用三个分量测量两条线。本文介绍了在旋转磁场驱动的方形容器中进行的实验和连铸钢水的模型实验结果。该测量系统已被证明是磁流体力学研究的有力工具。
In magnetohydrodynamics, model experiments are commonly conducted to investigate the interaction between magnetic fields and electrically conductive fluids. The available flow instrumentation for opaque fluids usually lacks the ability to capture and visualize a velocity field in one shot. We present a multidimensional ultrasound array Doppler velocimeter that employs multiple line arrays of transducers and allows the resolution of small scale structures in complex flows. The system achieves a lateral resolution up to 3 mm, an axial resolution of approx. 1.4 mm and frame rates up to 30 Hz in metal melts at room temperature. A flexible sensor arrangement allows for various measurement configurations, e.g. four planes can be measured simultaneously with one velocity component, two planes with two components or two lines with three components. We present an experiment in a square-shaped container driven by a rotating magnetic field and results of a model experiment for continuous steel casting. The measurement system has proven to be a powerful tool for research in magnetohydrodynamics.