CFD Simulations of the Effect of Dust Diameter on the Dispersion in the 20 L Bomb

Prevention and mitigation measures for dust explosion are based on the knowledge of the thermo-kinetic parameters which characterise flammability such as Minimum Explosible Concentration, MEC, and explosion behaviour such as maximum explosion pressure, PMAX, and deflagration index, KSt. Measurements...

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Main Authors: V. Di Sarli, P. Russo, R. Sanchirico, A. Di Benedetto
Format: Article
Language:English
Published: AIDIC Servizi S.r.l. 2013-05-01
Series:Chemical Engineering Transactions
Online Access:https://www.cetjournal.it/index.php/cet/article/view/6901
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author V. Di Sarli
P. Russo
R. Sanchirico
A. Di Benedetto
author_facet V. Di Sarli
P. Russo
R. Sanchirico
A. Di Benedetto
author_sort V. Di Sarli
collection DOAJ
description Prevention and mitigation measures for dust explosion are based on the knowledge of the thermo-kinetic parameters which characterise flammability such as Minimum Explosible Concentration, MEC, and explosion behaviour such as maximum explosion pressure, PMAX, and deflagration index, KSt. Measurements of these parameters are performed in spherical vessels (20 L sphere or 1 m3 sphere). The main issues in performing such measurements are related to the dust dispersion and to the turbulence level reached inside the sphere. Also, the dispersion and then concentration of the dust/air mixture in the vessel significantly affects the flame propagation, if stratification and sedimentation occurs. In this work we use a previously validated CFD 3D model to simulate the dust dispersion inside the sphere at different dust diameters. Results show that on increasing the dust diameter the dust is mainly concentrated at the vessel walls and the dust paths are different from those of the fluid flow.
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spelling doaj.art-66e209b208a546eba67f164e0dc6c53e2022-12-21T22:44:18ZengAIDIC Servizi S.r.l.Chemical Engineering Transactions2283-92162013-05-013110.3303/CET1331122CFD Simulations of the Effect of Dust Diameter on the Dispersion in the 20 L BombV. Di SarliP. RussoR. SanchiricoA. Di BenedettoPrevention and mitigation measures for dust explosion are based on the knowledge of the thermo-kinetic parameters which characterise flammability such as Minimum Explosible Concentration, MEC, and explosion behaviour such as maximum explosion pressure, PMAX, and deflagration index, KSt. Measurements of these parameters are performed in spherical vessels (20 L sphere or 1 m3 sphere). The main issues in performing such measurements are related to the dust dispersion and to the turbulence level reached inside the sphere. Also, the dispersion and then concentration of the dust/air mixture in the vessel significantly affects the flame propagation, if stratification and sedimentation occurs. In this work we use a previously validated CFD 3D model to simulate the dust dispersion inside the sphere at different dust diameters. Results show that on increasing the dust diameter the dust is mainly concentrated at the vessel walls and the dust paths are different from those of the fluid flow.https://www.cetjournal.it/index.php/cet/article/view/6901
spellingShingle V. Di Sarli
P. Russo
R. Sanchirico
A. Di Benedetto
CFD Simulations of the Effect of Dust Diameter on the Dispersion in the 20 L Bomb
Chemical Engineering Transactions
title CFD Simulations of the Effect of Dust Diameter on the Dispersion in the 20 L Bomb
title_full CFD Simulations of the Effect of Dust Diameter on the Dispersion in the 20 L Bomb
title_fullStr CFD Simulations of the Effect of Dust Diameter on the Dispersion in the 20 L Bomb
title_full_unstemmed CFD Simulations of the Effect of Dust Diameter on the Dispersion in the 20 L Bomb
title_short CFD Simulations of the Effect of Dust Diameter on the Dispersion in the 20 L Bomb
title_sort cfd simulations of the effect of dust diameter on the dispersion in the 20 l bomb
url https://www.cetjournal.it/index.php/cet/article/view/6901
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AT adibenedetto cfdsimulationsoftheeffectofdustdiameteronthedispersioninthe20lbomb