Calculation of Geometric Flow Profile Correction Factor for Ultrasonic Flow Meter Using Semi-3D Simulation Technique,Ultrasonics

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Calculation of Geometric Flow Profile Correction Factor for Ultrasonic Flow Meter Using Semi-3D Simulation Technique
Ultrasonics ( IF 3.8 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.ultras.2020.106165
Seyed Foad Mousavi ₁ , Seyed Hassan Hashemabadi ₁ , Jalil Jamali ₂

Affiliation

Due to the operating conditions, the flow profile within the ultrasonic flowmeters is not usually uniform. In order to consider the effects of non-uniformity, the flow profile correction factor (FPCF) can be implemented in the flow rate calculation process. Considering this, the measured velocity in each acoustic path can be converted to the average velocity. Various techniques have been used so far to simulate ultrasonic flowmeters and to calculate FPCF, which have often employed only CFD simulation without considering the effect of the flow on the acoustic wave movement inside the flowmeter. However, 3D acoustic simulation requires a very high mesh, especially when the diameter of the meter is high or the distance between the ultrasonic transducers is relatively long. In this work, a semi-3D simulation technique is used, through employing which, the FPCF for a commercial DN200 ultrasonic meter is calculated with a reasonable accuracy for different inlet flow velocities. Using this technique can significantly reduce the computational space and time.

中文翻译：

用半三维仿真技术计算超声波流量计几何流廓修正系数

由于操作条件的原因，超声波流量计内的流量分布通常不均匀。为了考虑不均匀性的影响，可以在流量计算过程中实施流动剖面校正因子（FPCF）。考虑到这一点，可以将每个声路径中的测量速度转换为平均速度。迄今为止，已经使用了各种技术来模拟超声波流量计和计算 FPCF，这些技术通常只使用 CFD 模拟，而没有考虑流量对流量计内部声波运动的影响。但是，3D 声学仿真需要非常高的网格，尤其是当仪表直径较大或超声波换能器之间的距离较长时。在这项工作中，使用了半 3D 模拟技术，通过使用它，商用 DN200 超声波流量计的 FPCF 是针对不同的入口流速以合理的精度计算的。使用这种技术可以显着减少计算空间和时间。

更新日期：2020-08-01

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