Effect of particle morphology on dust cloud dynamics
| Autor: | Waruna D. Kulatilaka, Christian Schweizer, Shrey Prasad, Pranav Bagaria, Chad V. Mashuga |
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| Rok vydání: | 2021 |
| Předmět: |
Work (thermodynamics)
Materials science Turbulence General Chemical Engineering 02 engineering and technology Mechanics Aerodynamics 021001 nanoscience & nanotechnology Minimum ignition energy 020401 chemical engineering Heat transfer Particle Particle size 0204 chemical engineering 0210 nano-technology Dust explosion |
| Zdroj: | Powder Technology. 379:89-95 |
| ISSN: | 0032-5910 |
| Popis: | Dust explosions threaten the solids process industry. Parameters influencing dust explosions include particle size, chemical composition, and polydispersity; however, particle morphology is often overlooked. Studies show particle morphology impacts dust cloud minimum ignition energy (MIE) via heat transfer because higher specific surface results in lower conductive heat resistance. However, heat transfer is not the only factor impacting MIE; the effect of particle morphology on cloud dynamics is another important factor. This work focuses on the influence of particle morphology on cloud aerodynamics during MIE testing. A digital in-line holography method has been developed to measure aerodynamics of particles in an MIE apparatus. Results show higher cloud concentration and turbulence for irregularly shaped particles, and the implication on MIE is discussed. The present results aid understanding of particle morphology on cloud dynamics, which is crucial in determining the effect on explosion parameters such as MIE and the resulting risk assessment. |
| Databáze: | OpenAIRE |
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