Cross-correlation focus method with an electrostatic sensor array for local particle velocity measurement in dilute gas–solid two-phase flow. (9th October 2015)

• Record Type: Journal Article
• Authors: Wang, Chao; Zhang, Jingyu; Gao, Wenbin; Ding, Hongbing; Wu, Weiping
• Is Part Of: Measurement science & technology. Volume 26:Number 11(2015:Nov.)
• Publication Date: 2015-10-09
• Subjects: electrostatic sensor array (ESA) -- cross-correlation focus method -- dilute gas–solid two-phase flow -- particle velocity measurement; Physical measurements -- Periodicals; Scientific apparatus and instruments -- Periodicals; Equipment and Supplies -- Periodicals; Science -- instrumentation -- Periodicals; Technology -- instrumentation -- Periodicals; Mesures physiques -- Périodiques; Physical measurements; Scientific apparatus and instruments; Periodicals; 502.87
• DOI: 10.1088/0957-0233/26/11/115301
• Languages: English
• ISSNs: 0957-0233

Abstract

Abstract: The gas–solid two-phase flow has been widely applied in the power, chemical and metallurgical industries. It is of great significance in the research of gas–solid two-phase flow to measure particle velocity at different locations in the pipeline. Thus, an electrostatic sensor array comprising eight arc-shaped electrodes was designed. The relationship between the cross-correlation (CC) velocity and the distribution of particle velocity, charge density and electrode spatial sensitivity was analysed. Then the CC sensitivity and its calculation method were proposed. According to the distribution of CC sensitivity, it was found that, between different electrode pairs, it had different focus areas. The CC focus method was proposed for particle velocity measurement at different locations and validated by a belt-style electrostatic induction experiment facility. Finally, the particle velocities at different locations with different flow conditions were measured to research the particle velocity distribution in a dilute horizontal pneumatic conveying pipeline.