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Measurement of Oil Fraction in Oil-Water Dispersed Flow with Swept-frequency Ultrasound Attenuation Method
International Journal of Multiphase Flow ( IF 3.6 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.ijmultiphaseflow.2020.103444
Han Yu , Chao Tan , Feng Dong

Abstract It is very meaningful to measure the oil fraction of oil-water dispersed flow in pipelines. Traditional single-frequency ultrasonic methods measure the oil fraction by treating the dispersed flow with an average droplet size, which ignores the influence of the droplet size distribution and limits the measurement accuracy. Therefore, a swept-frequency ultrasound attenuation method based on droplet size distribution is proposed for the measurement of oil fraction. According to the characteristics of similar physical parameters and large droplet size of oil-water two phases, the Bouguer-Lambert-Beer's Law and McClements model are combined to predict ultrasonic attenuation in the oil-water dispersed flow, considering the attenuation effects of absorption and scattering. Due to the time-varying characteristic of the oil-water two-phase flow state, the chirp-based detection method is proposed to quickly measure the ultrasonic attenuation of multiple frequencies. For the nonlinear problem of ultrasonic attenuation response, trust region algorithm combined with Gaussian quantum particle swarm optimization is proposed for inversion calculation of oil fraction. Finally, the effectiveness of the ultrasonic attenuation mechanism model and inversion algorithm is verified by simulation and numerical calculation, and the experiments are carried out in the test device for liquid-liquid two-phase flow. The experimental results show that the proposed method can measure the oil fraction of oil-water dispersed flow with an average error less than 1.67% and a maximum error less than 3.57%.

中文翻译:

用扫频超声衰减法测量油水分散流中的油分数

摘要 测量管道内油水分散流的含油率具有重要意义。传统的单频超声方法通过处理具有平均液滴尺寸的分散流来测量油分,这忽略了液滴尺寸分布的影响并限制了测量精度。因此,提出了一种基于液滴尺寸分布的扫频超声衰减方法来测量油分。根据油水两相物理参数相似、液滴尺寸大的特点,结合布格-兰伯特-比尔定律和麦克克莱门茨模型预测油水分散流中的超声衰减,同时考虑吸收和吸收的衰减效应。散射。针对油水两相流状态的时变特性,提出了基于chirp的检测方法来快速测量多频率的超声衰减。针对超声衰减响应非线性问题,提出了结合高斯量子粒子群优化的置信域算法进行含油率反演计算。最后通过仿真和数值计算验证了超声衰减机理模型和反演算法的有效性,并在液液两相流试验装置上进行了实验。实验结果表明,该方法可以测量油水分散流的含油率,平均误差小于1.67%,最大误差小于3.57%。提出了基于chirp的检测方法来快速测量多个频率的超声衰减。针对超声衰减响应非线性问题,提出了结合高斯量子粒子群优化的置信域算法进行含油率反演计算。最后通过仿真和数值计算验证了超声衰减机理模型和反演算法的有效性,并在液液两相流试验装置上进行了实验。实验结果表明,该方法可以测量油水分散流的含油率,平均误差小于1.67%,最大误差小于3.57%。提出了基于chirp的检测方法来快速测量多个频率的超声衰减。针对超声衰减响应非线性问题,提出了结合高斯量子粒子群优化的置信域算法进行含油率反演计算。最后通过仿真和数值计算验证了超声衰减机理模型和反演算法的有效性,并在液液两相流试验装置上进行了实验。实验结果表明,该方法可以测量油水分散流的含油率,平均误差小于1.67%,最大误差小于3.57%。针对超声衰减响应非线性问题,提出了结合高斯量子粒子群优化的置信域算法进行含油率反演计算。最后通过仿真和数值计算验证了超声衰减机理模型和反演算法的有效性,并在液液两相流试验装置上进行了实验。实验结果表明,该方法可以测量油水分散流的含油率,平均误差小于1.67%,最大误差小于3.57%。针对超声衰减响应非线性问题,提出了结合高斯量子粒子群优化的置信域算法进行含油率反演计算。最后通过仿真和数值计算验证了超声衰减机理模型和反演算法的有效性,并在液液两相流试验装置上进行了实验。实验结果表明,该方法可以测量油水分散流的含油率,平均误差小于1.67%,最大误差小于3.57%。通过仿真和数值计算验证了超声衰减机理模型和反演算法的有效性,并在液液两相流试验装置上进行了实验。实验结果表明,该方法可以测量油水分散流的含油率,平均误差小于1.67%,最大误差小于3.57%。通过仿真和数值计算验证了超声衰减机理模型和反演算法的有效性,并在液液两相流试验装置上进行了实验。实验结果表明,该方法可以测量油水分散流的含油率,平均误差小于1.67%,最大误差小于3.57%。
更新日期:2020-12-01
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