Dataset of the temperature rise during granular flows in a rotating drum

Rangel, Rafael L.; Kisuka, Francisco; Hare, Colin; Vivacqua, Vincenzino; Franci, Alessandro; Oñate, Eugenio; Wu, Chuanyu

doi:10.1016/j.dib.2023.109282

Cited by 3 publications

(1 citation statement)

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“…It was concluded that the heat generation comes mainly from plastic deformation, followed by sliding friction, and an insignificant contribution from rolling friction. Recently, Rangel et al 43,44 investigated heat generation in a rotating drum using a thermal camera to measure particle bed temperature. It was observed that rotating speed, higher fill ratio, and metallic materials favor heat generation.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of heat generation during the mixing of granular materials using an overhead stirrer

Kisuka,

Rangel,

Hare

et al. 2023

AIChE Journal

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Bladed mixers are commonly used for processing granular materials, requiring significant mechanical energy for optimal blending. During this process, heat is generated due to dissipated mechanical energy within the granular medium. However, our understanding of heat generation mechanisms without external thermal loads is limited. This article investigates heat generation by monitoring temperature changes in granular beds mixed using an overhead stirrer. First‐order kinetic equations are employed to extrapolate experimental data to a thermal equilibrium where heat generation and loss rates are balanced. Lead, steel, and glass particles are utilized under different operating conditions. Notably, metallic particles exhibit faster heating due to their lower heat capacity. Increasing rotation speed, fill ratio, and particle size result in greater temperature rises. Additionally, flat blades generate more heat compared to tilted blades. Through dimensional analysis, the experimental data are collapsed into linear curves that correlate system power consumption and granular bed temperature with operating conditions.

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Section: Introductionmentioning

confidence: 99%