The effect of size on the severity of explosions involving flocculent materials has been simulated by means of a model previously developed for spherical particles and here extended to the cylindrical geometry of flock. The model consists of the identification of the regime (internal and external heating, pyrolysis/devolatilization reaction, and volatiles combustion) controlling the explosion by the evaluation of dimensionless numbers (Bi, Da, Th and Pc) and then of the estimation of the deflagration index as a function of flocculent size. The model has been validated by means of explosion data of polyamide 6.6 (nylon) at varying diameter and length. The comparison between model and experimental data show a fairly good agreement.

Item Type:	Refereed Article
Keywords:	deflagration index, dust explosion, flocculent, modelling, nylon fibre, combustion, computer simulation, cylinders (shapes), models, cylindrical geometry, deflagration index, dimensionless number, dust explosion, flocculent, nylon fibre, explosions
Research Division:	Engineering
Research Group:	Interdisciplinary Engineering
Research Field:	Risk Engineering (excl. Earthquake Engineering)
Objective Division:	Manufacturing
Objective Group:	Leather Products, Fibre Processing and Textiles
Objective Field:	Synthetic Fibres, Yarns and Fabrics
Author:	Khan, FI (Professor Faisal Khan)
ID Code:	120784
Year Published:	2013
Web of Science® Times Cited:	5
Deposited By:	NC Maritime Engineering and Hydrodynamics
Deposited On:	2017-08-30
Last Modified:	2017-11-06
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