Wear and metering analysis of Coriolis mass flowmeter measuring disk based on EDEM

Under high mass-flow conditions of coal fly ash, the Coriolis mass flowmeter experiences significant wear on the measuring disk due to prolonged particle collisions and friction. This wear substantially compromises both measurement accuracy and operational longevity. This study employs EDEM-based wear simulation to investigate the effects of particle size on wear mechanisms and metering performance. The results indicate that maximum wear is localized at the junction of the deflector cone outlet, blade, and lower baffle, with tangential friction identified as the primary driver of wear. Additionally, it was observed that wear depth increases with larger particle sizes (150-250 μm), which can be attributed to enhanced kinetic energy and impact forces associated with these particles. While an increase in coal fly ash particle size correlates with greater wear on the measuring disk, it does not adversely affect the metrological accuracy of the Coriolis mass flowmeter. This study provides theoretical insights for predicting wear loss efficiency in measuring disks, and offers guidance for subsequent optimization designs aimed at enhancing wear resistance.