The role of friction in mixing and segregation of granular material

Džiugys, Algis; Navakas, Robertas

doi:10.1007/s10035-009-0145-3

Cited by 33 publications

(13 citation statements)

References 40 publications

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“…The solution of these equations yields the distribution of temperature and species, e. g. carbon-dioxide or alkali salts, inside a particle versus time. Motion of particles in a rotary kiln or on a moving grate is derived from the discrete element method and describes the trajectory of each particle by solving Newton equations of motion [70][71][72]. Treatment of a flow of reacting gases in the voids is dealt with by well-established CFD tools.…”

Section: Discrete Particle Methodsmentioning

confidence: 99%

Simulation of thermal conversion of solid fuel by the discrete particle method

Peters¹,

Džiugys²,

Navakas³

2011

Lith. J. Phys.

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We introduce the discrete particle method (DPM) that derives from the discrete element method (DEM). This is an advanced numerical simulation tool that takes into account both motion and chemical conversion of granular material, such as coal or biomass, in furnaces in conjunction with computational fluid dynamics (CFD). However, predictions of solely motion or conversion in a decoupled mode are also applicable. The DPM uses object oriented computational techniques that support objects representing three-dimensional particles of various shapes, size, and physical properties of particle material. This makes DPM a highly versatile tool in dealing with a variety of problems related to different industrial applications of granular matter. A review of literature concerning different approaches to mass and heat transfer in packed beds is presented.

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Section: Discrete Particle Methodsmentioning

confidence: 99%

Simulation of thermal conversion of solid fuel by the discrete particle method

Peters¹,

Džiugys²,

Navakas³

2011

Lith. J. Phys.

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“…The morphology of the individual grains impacts strongly the global behaviour of the entire granular media (Cleary and Sawley 2002;Pena et al 2007;Lu and McDowell 2007;Donev et al 2004). Moreover, phenomena such as convection and segregation may arise in polydisperse systems (Kudrolli 2004a;Dziugys and Navakas 2009;Metzger et al 2011;Rietz and Stannarius 2008;Miyamoto et al 2007), see Sect. 5.2.…”

Section: Monodisperse Polydisperse Spheres and Other Shapesmentioning

confidence: 99%

Small Solar System Bodies as granular media

Hestroffer

Sánchez

Staron

et al. 2019

Astron Astrophys Rev

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“…The approach to characterize mixing of particles in granular media comes from the theory of turbulence in fluid dynamics [14,15]. It is assumed that the velocity of each particle v i can be split into its mean value i V and the fluctuating part i v :…”

Section: Mixing Intensity Definitionmentioning

confidence: 99%

Applying XDEM to Analyze the Heat-up Process of Woody Biomass on a Backward Acting Grate

Mohseni¹,

Peters²,

Džiugys³

2017

JEPE

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Abstract:The objective of this study is analysis of heat-up process of wet woody particles on a backward acting grate including dynamics motion investigation by implementing XDEM (extended discrete element method) as a novel approach. In this method, the particles are resolved as the discrete phase (individual elements) coupled via heat, mass and momentum transfer to the continuous gas phase. The temperature of particulates along the backward acting grate is investigated by evaluating effects of operating parameters such as bar amplitude and period. Furthermore, the bar motion has effects largely on the heat-up process of the packed bed on the backward acting grate which is considered here as well. In other words, motion of particles caused by bar motion influences the heat transfer of particles and totally the packed bed. In fact, the particles' heat-up is performed by a radiative heat flux facing the packed bed surface so that heat transfer of particles as radiation and conduction with surrounding particles is taken into account in addition to convection heat transfer between particles and surrounding gas phase.

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The role of friction in mixing and segregation of granular material

Cited by 33 publications

References 40 publications

Simulation of thermal conversion of solid fuel by the discrete particle method

Simulation of thermal conversion of solid fuel by the discrete particle method

Small Solar System Bodies as granular media

Applying XDEM to Analyze the Heat-up Process of Woody Biomass on a Backward Acting Grate

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