Hopper flows of mixtures of spherical and rod‐like particles via the multisphere method

Lattanzi, Aaron M.; Stickel, Jonathan J.

doi:10.1002/aic.16882

Title: Hopper flows of mixtures of spherical and rod‐like particles via the multisphere method

Abstract

Abstract The discharge of granular media from hoppers plays a vital role in many solids handling operations. The dynamic flow of poly‐disperse nonspherical particles differs markedly from mono‐disperse spheres and highlights the need to rigorously account for particle shape effects. The multisphere discrete element method (MS‐DEM) was utilized here to examine the bulk packing fraction, discharge rate, collisional stress tensor, and order parameter of a bi‐disperse sphere‐rod mixture evacuating a hopper. A modified form of the Myers and Sellers correlation with variable shape factor is capable of replicating the MS‐DEM discharge data. The collisional stress tensor is observed to be highly symmetric for mono‐disperse spheres but becomes asymmetric when rod‐like particles are introduced. The order parameter within the hopper increases significantly during discharge and the rod‐like particles undergo shear induced alignment with their long dimensions orthogonal to the outflow plane.

Authors:

^[1]; Stickel, Jonathan J. ^[1]

National Renewable Energy Laboratory Golden Colorado

Publication Date:: Fri Dec 13 00:00:00 EST 2019

Sponsoring Org.:: USDOE

OSTI Identifier:: 1579438

Resource Type:: Publisher's Accepted Manuscript

Journal Name:: AIChE Journal

Additional Journal Information:: Journal Name: AIChE Journal Journal Volume: 66 Journal Issue: 4; Journal ID: ISSN 0001-1541

Publisher:: Wiley Blackwell (John Wiley & Sons)

Country of Publication:: United States

Language:: English

Citation Formats


                    Lattanzi, Aaron M., and Stickel, Jonathan J. Hopper flows of mixtures of spherical and rod‐like particles via the multisphere method.  United States: N. p., 2019. 
Web.  doi:10.1002/aic.16882.

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                    Lattanzi, Aaron M., & Stickel, Jonathan J. Hopper flows of mixtures of spherical and rod‐like particles via the multisphere method.  United States.  https://doi.org/10.1002/aic.16882

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                    Lattanzi, Aaron M., and Stickel, Jonathan J. Fri .  
"Hopper flows of mixtures of spherical and rod‐like particles via the multisphere method".  United States.  https://doi.org/10.1002/aic.16882.

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@article{osti_1579438,

  title        = {Hopper flows of mixtures of spherical and rod‐like particles via the multisphere method},

  author       = {Lattanzi, Aaron M. and Stickel, Jonathan J.},

  abstractNote = {Abstract The discharge of granular media from hoppers plays a vital role in many solids handling operations. The dynamic flow of poly‐disperse nonspherical particles differs markedly from mono‐disperse spheres and highlights the need to rigorously account for particle shape effects. The multisphere discrete element method (MS‐DEM) was utilized here to examine the bulk packing fraction, discharge rate, collisional stress tensor, and order parameter of a bi‐disperse sphere‐rod mixture evacuating a hopper. A modified form of the Myers and Sellers correlation with variable shape factor is capable of replicating the MS‐DEM discharge data. The collisional stress tensor is observed to be highly symmetric for mono‐disperse spheres but becomes asymmetric when rod‐like particles are introduced. The order parameter within the hopper increases significantly during discharge and the rod‐like particles undergo shear induced alignment with their long dimensions orthogonal to the outflow plane.},

  doi          = {10.1002/aic.16882},

  journal      = {AIChE Journal},

  number       = 4,

  volume       = 66,

  place        = {United States},

  year         = {Fri Dec 13 00:00:00 EST 2019},

  month        = {Fri Dec 13 00:00:00 EST 2019}

}

Copy to clipboard

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Title: Hopper flows of mixtures of spherical and rod‐like particles via the multisphere method

Abstract

Citation Formats

Open-source MFIX-DEM software for gas–solids flows: Part I—Verification studies journal, April 2012

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Orientational Order and Alignment of Elongated Particles Induced by Shear journal, May 2012

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Objective decomposition of the stress tensor in granular flows journal, February 2005

Packing of cylindrical particles: DEM simulations and experimental measurements journal, July 2017

On the computation of steady hopper flows III: Model comparisons journal, November 2006

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Modeling granular segregation in flow from quasi-three-dimensional, wedge-shaped hoppers journal, January 2008

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Outflow and clogging of shape-anisotropic grains in hoppers with small apertures journal, January 2017

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Signatures of incipient jamming in collisional hopper flows journal, January 2013

Simulation of Filling and Emptying in a Hexagonal-Shape Solar Grain silo journal, October 2000

Shear-induced alignment and dynamics of elongated granular particles journal, November 2012

DEM modelling of industrial granular flows: 3D case studies and the effect of particle shape on hopper discharge journal, February 2002

Prediction of hopper discharge rates of binary granular mixtures journal, February 1998

Predicting discharge dynamics from a rectangular hopper using the discrete element method (DEM) journal, December 2008

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Discrete Element Method Simulations for Complex Granular Flows journal, January 2015

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A constitutive model with microstructure evolution for flow of rate-independent granular materials journal, July 2011

Experimental and numerical investigation on the influence of particle shape and shape approximation on hopper discharge using the discrete element method journal, February 2013

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A study on the influence of particle shape on the mechanical interactions of granular media in a hopper using the Discrete Element Method journal, July 2015

Flow characteristics and discharge rate of ellipsoidal particles in a flat bottom hopper journal, February 2014

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Force Schemes in Simulations of Granular Materials journal, January 1996

Force model considerations for glued-sphere discrete element method simulations journal, August 2009

Discrete element simulation of granular flow in 2D and 3D hoppers: Dependence of discharge rate and wall stress on particle interactions journal, March 1995

Open-source MFIX-DEM software for gas–solids flows: Part I—Verification studies
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Predicting the flow mode from hoppers using the discrete element method
journal, October 2009

The stress tensor for simple shear flows of a granular material
journal, June 1989

Orientational Order and Alignment of Elongated Particles Induced by Shear
journal, May 2012

Distinct element modelling of non-spherical frictionless particle flow
journal, January 2004

Objective decomposition of the stress tensor in granular flows
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Packing of cylindrical particles: DEM simulations and experimental measurements
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On the computation of steady hopper flows III: Model comparisons
journal, November 2006

A new collision model for ellipsoidal particles in shear flow
journal, January 2019

Modeling granular segregation in flow from quasi-three-dimensional, wedge-shaped hoppers
journal, January 2008

The discharge of fine sands from conical hoppers
journal, October 1995

The flow of granular solids through orifices
journal, September 1961

Outflow and clogging of shape-anisotropic grains in hoppers with small apertures
journal, January 2017

A study on the validity of the multi-sphere Discrete Element Method
journal, December 2008

Signatures of incipient jamming in collisional hopper flows
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Simulation of Filling and Emptying in a Hexagonal-Shape Solar Grain silo
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Shear-induced alignment and dynamics of elongated granular particles
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DEM modelling of industrial granular flows: 3D case studies and the effect of particle shape on hopper discharge
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The stress tensor in a two-dimensional granular shear flow
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On the computation of steady Hopper flows
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Experimental validation of polyhedral discrete element model
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journal, February 2002

Turbulent Flows
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A constitutive model with microstructure evolution for flow of rate-independent granular materials
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Experimental and numerical investigation on the influence of particle shape and shape approximation on hopper discharge using the discrete element method
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