Abstract
This study explores a new perspective on triboelectrification that could potentially lead to the development of a non-destructive approach for the rapid characterization of powders. Sieved yellow pea powders at various particle sizes and protein contents were used as a model system for the experimental charge measurements of the triboelectrified powders. A tribocharging model based on the prominent condenser model was combined with a Eulerian–Lagrangian computational fluid dynamics (CFD) model to simulate particle tribocharging in particle-laden flows. Further, an artificial neural network model was developed to predict particle–wall collision numbers based on a database obtained through CFD simulations. The tribocharging and CFD models were coupled with the experimental tribocharging data to estimate the contact potential difference of powders, which is a function of contact surfaces’ work functions and depends on the chemical composition of powders. The experimentally measured charge-to-mass ratios were linearly related to the calculated contact potential differences for samples with different protein contents, indicating a potential approach for the chemical characterization of powders.
Highlights
Powders are often characterized based on their chemical and physical properties, which affect their manufacturing process and the quality of the final products
The calculation of transferred charge between particles and the wall could be described based on the condenser model, which considers particle and wall surfaces as the two plates of a capacitor where charge transfer occurs due to different work functions of two materials in contact [24–30]
This research investigated the charging behavior of powders during tribocharging in particle-laden flows as a potential tool for identifying the chemical composition and concentration of powders’ constituents
Summary
Could Tribocharging Lead to the Development of a Non-Destructive Approach for Process. Hadi Mehrtash 1 , Dinara Konakbayeva 2 , Solmaz Tabtabaei 2, *, Seshasai Srinivasan 1,3, *. New Perspective to Tribocharging: Could Tribocharging Lead to the Development of a Non-Destructive. W Booth School of Engineering Practice and Technology, McMaster University, Hamilton, ON L8S 0A3, Canada
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