Measurement of flow rate in solid-liquid two-phase flow in pipes at low volume concentration with venturimeter

• Published in: Measurement : journal of the International Measurement Confederation Vol. 138; pp. 409 - 415
• Main Authors: Wang, Liyan, Li, Saiwei, Yuan, Ye, Sun, Zhiqiang, Zhou, Tian
• Format: Journal Article
• Language: English
• Published: London Elsevier Ltd 01.05.2019; Elsevier Science Ltd
• Subjects: Discharge coefficient; Flow measurement; Flow velocity; Particle size; Pipe hydrotransport; Pipes; Pressure measurement; Solid-liquid two-phase flow; Two phase flow; Venturimeter; Solid-liquid two-phase flow; Discharge coefficient; Pipe hydrotransport; Venturimeter
• ISSN: 0263-2241; 1873-412X
• DOI: 10.1016/j.measurement.2019.01.084

•Venturi is proposed to measure the flow rate of solid-liquid two-phase flows.•Discharge coefficient is studied varying in particle size, velocity, concentration.•The average discharge coefficient ratio is positively related to concentration.•Venturi is suggested to be used in case of low concentration and small particles. In this paper venturimeter is proposed to measure the flow rate of homogeneous solid-liquid two-phase flows in a tube at low volume concentrations. Six mixtures varying in concentration and velocity were systemically measured in both horizontal and vertical arrangements for the variations of pressure and discharge coefficient of venturi. The results show that the average discharge coefficient ratio is positively related to concentration. However the growth rate decreases as concentration increases, and the maximum of the former is merely 1.05 times the minimum when concentration varied from 0% to 15%. Furthermore the average discharge coefficient ratio decreases as the particle size increases for the same concentration, whose maximum value increase by 3%. The results indicate that venturi is an accurate meter for homogeneous solid-liquid two-phase flow measurement.