Discrete and Continuum Approaches for Modeling Solids Motion Inside a Rotating Drum at Different Regimes

In this work, the performance of discrete and continuum computational models for addressing granular flow dynamics in a rotating drum at different regimes is studied. The results are compared to the experimental observations obtained by image processing of a high-speed camera on a pilot plant rotati...

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Autores principales:	César Martín Venier, Santiago Márquez Damián, Sergio Eduardo Bertone, Gabriel Darío Puccini, José María Risso, Norberto Marcelo Nigro
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	rotating drum CFD DEM granular flow rheology Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/7c7d6f092e974f3db087cc28c44b46bd
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spelling	oai:doaj.org-article:7c7d6f092e974f3db087cc28c44b46bd2021-11-11T15:09:25ZDiscrete and Continuum Approaches for Modeling Solids Motion Inside a Rotating Drum at Different Regimes10.3390/app1121100902076-3417https://doaj.org/article/7c7d6f092e974f3db087cc28c44b46bd2021-10-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/10090https://doaj.org/toc/2076-3417In this work, the performance of discrete and continuum computational models for addressing granular flow dynamics in a rotating drum at different regimes is studied. The results are compared to the experimental observations obtained by image processing of a high-speed camera on a pilot plant rotating drum. For the discrete modeling, Discrete Elements Method (DEM) through the open-source software LIGGGHTS(R) is used, while for the continuum model, the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>μ</mi><mo>(</mo><mi>I</mi><mo>)</mo></mrow></semantics></math></inline-formula>-rheology is implemented in the general structure of a Volume-Of-Fluid (VOF) solver of the OpenFOAM(R) platform. Four test cases consisting of different sets of particles filling and rotational speed are considered and the results are analyzed in terms of solids distribution, the velocity of the particles, and mixing patterns. The solids distribution and velocities for each one of the tests considered are fairly similar between both computational techniques and the experimental observations. In general, DEM results show a higher level of agreement with the experiments, with minor differences that might be irrelevant in some cases (e.g., more splashing of particles for the fastest regimes). Among the drawbacks of the continuum model, it was unable to predict the slumping regime observed experimentally which can be attributed to the lack of a yield criterion and a slower dragging of the granular material when the drum is being accelerated, which can be attributed to the need of adding non-local effects to the rheology. On the other hand, the dynamic of the bed in the rolling and cascading regimes are accurately predicted by the continuum model in less time than DEM, even in a pilot plant scale system. These results suggest that the use of a continuum model with granular fluid rheology is more suited for simulating industrial-scale rotating drums at different regimes than DEM, but only if all the phenomenological features (i.e., yield criteria and non-local effects) are taken into account in the model.César Martín VenierSantiago Márquez DamiánSergio Eduardo BertoneGabriel Darío PucciniJosé María RissoNorberto Marcelo NigroMDPI AGarticlerotating drumCFDDEMgranular flowrheologyTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10090, p 10090 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	rotating drum CFD DEM granular flow rheology Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	rotating drum CFD DEM granular flow rheology Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 César Martín Venier Santiago Márquez Damián Sergio Eduardo Bertone Gabriel Darío Puccini José María Risso Norberto Marcelo Nigro Discrete and Continuum Approaches for Modeling Solids Motion Inside a Rotating Drum at Different Regimes
description	In this work, the performance of discrete and continuum computational models for addressing granular flow dynamics in a rotating drum at different regimes is studied. The results are compared to the experimental observations obtained by image processing of a high-speed camera on a pilot plant rotating drum. For the discrete modeling, Discrete Elements Method (DEM) through the open-source software LIGGGHTS(R) is used, while for the continuum model, the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>μ</mi><mo>(</mo><mi>I</mi><mo>)</mo></mrow></semantics></math></inline-formula>-rheology is implemented in the general structure of a Volume-Of-Fluid (VOF) solver of the OpenFOAM(R) platform. Four test cases consisting of different sets of particles filling and rotational speed are considered and the results are analyzed in terms of solids distribution, the velocity of the particles, and mixing patterns. The solids distribution and velocities for each one of the tests considered are fairly similar between both computational techniques and the experimental observations. In general, DEM results show a higher level of agreement with the experiments, with minor differences that might be irrelevant in some cases (e.g., more splashing of particles for the fastest regimes). Among the drawbacks of the continuum model, it was unable to predict the slumping regime observed experimentally which can be attributed to the lack of a yield criterion and a slower dragging of the granular material when the drum is being accelerated, which can be attributed to the need of adding non-local effects to the rheology. On the other hand, the dynamic of the bed in the rolling and cascading regimes are accurately predicted by the continuum model in less time than DEM, even in a pilot plant scale system. These results suggest that the use of a continuum model with granular fluid rheology is more suited for simulating industrial-scale rotating drums at different regimes than DEM, but only if all the phenomenological features (i.e., yield criteria and non-local effects) are taken into account in the model.
format	article
author	César Martín Venier Santiago Márquez Damián Sergio Eduardo Bertone Gabriel Darío Puccini José María Risso Norberto Marcelo Nigro
author_facet	César Martín Venier Santiago Márquez Damián Sergio Eduardo Bertone Gabriel Darío Puccini José María Risso Norberto Marcelo Nigro
author_sort	César Martín Venier
title	Discrete and Continuum Approaches for Modeling Solids Motion Inside a Rotating Drum at Different Regimes
title_short	Discrete and Continuum Approaches for Modeling Solids Motion Inside a Rotating Drum at Different Regimes
title_full	Discrete and Continuum Approaches for Modeling Solids Motion Inside a Rotating Drum at Different Regimes
title_fullStr	Discrete and Continuum Approaches for Modeling Solids Motion Inside a Rotating Drum at Different Regimes
title_full_unstemmed	Discrete and Continuum Approaches for Modeling Solids Motion Inside a Rotating Drum at Different Regimes
title_sort	discrete and continuum approaches for modeling solids motion inside a rotating drum at different regimes
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/7c7d6f092e974f3db087cc28c44b46bd
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Discrete and Continuum Approaches for Modeling Solids Motion Inside a Rotating Drum at Different Regimes

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