Signal analysis of vortex flow field in mist flow using transient pressure sensor array

2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Pub Date : 2019-05-01 DOI:10.1109/I2MTC.2019.8827043

Hongjun Sun, Xiaoliang Li, Hongbing Ding, Jinxia Li

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引用次数: 4

Abstract

The vortex flowmeter can be used to measure the flowrate of wet gas mist flow. In order to analyze the characteristics of vortex flowmeter in wet gas mist flow, the transient pressure sensor array was utilized to acquire the signal of near-wall vortex flow field. The amplitude-frequency response characteristics of the probe–transducer systems were analyzed to ensure the transient pressure measurement accuracy. Then, experiments were carried out on the mist flow facility, and vortex field signals were obtained by the sensor array. The signal’s amplitudes on different pressure-sampling positions were compared and the signal qualities on different liquid mass loadings were analyzed by correlation measurement. What’s more, the convection velocity of vortex core was measured by the cross-correlation method. The results indicated that the signal quality deteriorates greatly with the increase of liquid mass loading, and the convection velocity of vortex core in mist flow is obviously lower than that of the single gas condition.

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瞬态压力传感器阵列雾流中旋涡流场的信号分析

旋涡流量计可用于测量湿气雾流的流量。为了分析湿气雾流中涡流流量计的特性，利用瞬态压力传感器阵列获取近壁涡流流场信号。分析了探头-换能器系统的幅频响应特性，保证了瞬态压力测量精度。然后，在雾流装置上进行了实验，通过传感器阵列获得了涡场信号。通过相关测量，比较了不同压力采样位置的信号幅值，分析了不同液体质量负载下的信号质量。利用互相关法测量了涡旋核的对流速度。结果表明，随着液体质量负荷的增加，信号质量明显恶化，雾流中涡芯的对流速度明显低于单一气体条件下的对流速度。

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2019 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

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