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| 金属流体速度的阵列探针测量方法研究 |
| Experimental study on the measuring method of liquid metal flow with array electric potential probe |
| Received:March 27, 2022 Revised:April 10, 2022 |
| DOI：10.7520/1001-4888-22-072 |
| 中文关键词: 金属流体 电势探针 磁流体动力学 磁场 流场测量 |
| 英文关键词:liquid metal electric potential probe MHD(Magnetohydrodynamics) magnetic field flow field measurement |
| 基金项目:国家自然科学基金(52176089， 51776194)；国家重点研发计划项目(2017YFE0301300)资助 |
| Author Name | Affiliation | | ZHANG Xiangfei | School of Engineering Science, University of Chinese Academy of Sciences, Beijing 101408, China | | YANG Juancheng | State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China | | LV Ze | School of Engineering Science, University of Chinese Academy of Sciences, Beijing 101408, China | | ZHANG Nianmei | School of Engineering Science, University of Chinese Academy of Sciences, Beijing 101408, China |
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| 中文摘要: |
| 不透明液态金属的速度测量在电磁冶金和核能领域具有十分重要的作用，能为相关现象的解释提供直接的数据支持。以电磁学中的欧姆定律为基础，搭建了一套多探针阵列的金属流体速度测量系统。通过设计探针的排布形式、数据采集系统和数据处理方法，以磁场环境下圆柱绕流问题为实验对象，实验验证了探针插入和排布方式对测量结果的影响，结果表明探针插入流体与探针紧贴壁面所测量得到的速度误差约为5%，而探针排布方式引起的测量误差为2.5%~10%。另外，实验中还发现阵列探针伸入到流体中不影响其对金属流体非定常波动频率的测量，流场的波动频率也不会受到周围探针的影响。 |
| 英文摘要: |
| Velocity measurement of opaque liquid metal plays a very important role in electromagnetic metallurgy and nuclear energy fields, which can provide direct data support for the interpretations of related phenomena. Based on the Ohm's law in electromagnetism, a velocity measurement system with multi array electric potential probes for metal fluids is developed. The probe arrangement, data collection system and data processing method are all introduced in detail with the help of the flow around a cylinder under a magnetic field. The influences of probe insertion and arrangement on the measurement results are verified experimentally. The results show that the velocity error is about 5% when the probe is inserted into the fluid about 2mm. But the measuring error caused by the probe arrangement is 2.5%~10%, if the probe is close to the wall. In addition, the experiment also reveals that the insertion of array probes into the fluid does not affect the measurement of fluctuation frequency of the metal fluid and the frequencies of flow field are also not affected by the surrounding probes. |
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