Dual-modality UDV-PIV system for measurement of solid-liquid flow in sewage facilities. (December 2021)

• Record Type: Journal Article
• Authors: Fang, Lide; Liu, Yueyuan; Wang, Shaochong; Zhao, Jixun; Faraj, Yousef; Tian, Mengyuan; Wei, Zihui
• Is Part Of: Flow measurement and instrumentation. Volume 82(2021)
• Publication Date: 2021-12
• Subjects: Sewage -- Solid-liquid two-phase flow -- Ultrasonic Doppler velocimetry (UDV) -- Particle image velocimetry (PIV); Fluid dynamic measurements -- Periodicals; Flow meters -- Periodicals; Fluides, Dynamique des -- Mesure -- Périodiques; Débitmètres -- Périodiques; 681.2805
• DOI: 10.1016/j.flowmeasinst.2021.102063
• Languages: English
• ISSNs: 0955-5986

Abstract

Abstract: Population growth and global industrialization cause a dramatic increase in the amount of sewage sludge produced annually worldwide from Municipal and Industrial Wastewater treatment. The efficient measurement of sewage, which is a typical solid-liquid two-phase flow, has become an important issue that requires to be urgently addressed. In this study, an improved Ultrasonic Doppler Velocimetry (UDV) is proposed to optimize the probe design and hardware design, which reduces the influence of working frequency and echo reverberation on accuracy and improves the stability of the system. A Doppler peak extraction and superposition method is also put forward to correct the offset of Doppler peak frequency. In this paper, Particle Image Velocimetry (PIV) is used to calibrate the UDV system to modify the measurement model of ultrasonic Doppler liquid-solid two-phase flow, and dynamic experiments are carried out in a vertical steel pipe with inner diameter of 50 mm at different flow conditions. The results show that the accuracy and stability of UDV measurement system are greatly improved, with a maximum relative error of 1.49%. Highlights: In this study, ultrasonic Doppler velocimetry (UDV) was used to achieve high-efficiency measurement of solids velocity in sewage. The PIV flow rate measurement system has high accuracy and can realize online calibration for UDV. The dual-modality UDV-PIV system proposed in this paper has a significant sewage treatment effect, achieving a maximum relative error of 1.49%. The proposed dual modality system can have a great potential for measuring industrial solid-liquid flow with excellent precision.