From soft and hard particle simulations to continuum theory for granular flows

Stefan Luding, Nicolás Rivas Abud, Thomas Weinhart

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

One challenge of today’s research is the realistic simulation of disordered many particle systems in static and dynamic/flow situations. Examples are particulate and granular materials like sand, powders, ceramics or composites, with applications in particle-technology and geo-technical/physical systems. The inhomogeneous microstructure of such materials makes it very difficult to model them with continuum methods, which typically assume homogeneity on the microscale and scale separation between the constituents and the macroscopic fields. As an alternative, discrete particle methods can be applied, since they intrinsically take the micro-structure into account. The ultimate challenge is to bridge the gap between both approaches by using particlesimulations to obtain appropriate constitutive relations for continuum theories, and work with those on the macro-scale. Here, soft and hard particle simulation methods are introduced as well as the micro-macro transition to obtain the continuum fields from the particle data. Two application examples discussed in detail concern the flow of particle down an incline, as relevant for geo-flows, as well as a vibrated granular system as relevant for highly agitated transport or conveying processes.
LanguageEnglish
Title of host publicationALERT Doctoral School 2017
Subtitle of host publicationDiscrete Element Modeling
EditorsStefan Luding, Gaël Combe, Kianoosh Taghizadeh
Pages3-42
Number of pages39
Publication statusPublished - 5 Oct 2017
EventALERT Geomaterials Doctoral School 2017: Discrete Element Modeling - Aussois, France
Duration: 5 Oct 20177 Oct 2017
http://alertgeomaterials.eu/2017/03/alert-geomaterials-doctoral-school-2017/

Course

CourseALERT Geomaterials Doctoral School 2017
CountryFrance
CityAussois
Period5/10/177/10/17
Internet address

Fingerprint

continuums
simulation
microstructure
granular materials
microbalances
particulates
sands
homogeneity
ceramics
composite materials

Keywords

  • DEM

Cite this

Luding, S., Rivas Abud, N., & Weinhart, T. (2017). From soft and hard particle simulations to continuum theory for granular flows. In S. Luding, G. Combe, & K. Taghizadeh (Eds.), ALERT Doctoral School 2017: Discrete Element Modeling (pp. 3-42)
Luding, Stefan ; Rivas Abud, Nicolás ; Weinhart, Thomas . / From soft and hard particle simulations to continuum theory for granular flows. ALERT Doctoral School 2017: Discrete Element Modeling. editor / Stefan Luding ; Gaël Combe ; Kianoosh Taghizadeh. 2017. pp. 3-42
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title = "From soft and hard particle simulations to continuum theory for granular flows",
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Luding, S, Rivas Abud, N & Weinhart, T 2017, From soft and hard particle simulations to continuum theory for granular flows. in S Luding, G Combe & K Taghizadeh (eds), ALERT Doctoral School 2017: Discrete Element Modeling. pp. 3-42, ALERT Geomaterials Doctoral School 2017, Aussois, France, 5/10/17.

From soft and hard particle simulations to continuum theory for granular flows. / Luding, Stefan ; Rivas Abud, Nicolás; Weinhart, Thomas .

ALERT Doctoral School 2017: Discrete Element Modeling. ed. / Stefan Luding; Gaël Combe; Kianoosh Taghizadeh. 2017. p. 3-42.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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T1 - From soft and hard particle simulations to continuum theory for granular flows

AU - Luding, Stefan

AU - Rivas Abud, Nicolás

AU - Weinhart, Thomas

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N2 - One challenge of today’s research is the realistic simulation of disordered many particle systems in static and dynamic/flow situations. Examples are particulate and granular materials like sand, powders, ceramics or composites, with applications in particle-technology and geo-technical/physical systems. The inhomogeneous microstructure of such materials makes it very difficult to model them with continuum methods, which typically assume homogeneity on the microscale and scale separation between the constituents and the macroscopic fields. As an alternative, discrete particle methods can be applied, since they intrinsically take the micro-structure into account. The ultimate challenge is to bridge the gap between both approaches by using particlesimulations to obtain appropriate constitutive relations for continuum theories, and work with those on the macro-scale. Here, soft and hard particle simulation methods are introduced as well as the micro-macro transition to obtain the continuum fields from the particle data. Two application examples discussed in detail concern the flow of particle down an incline, as relevant for geo-flows, as well as a vibrated granular system as relevant for highly agitated transport or conveying processes.

AB - One challenge of today’s research is the realistic simulation of disordered many particle systems in static and dynamic/flow situations. Examples are particulate and granular materials like sand, powders, ceramics or composites, with applications in particle-technology and geo-technical/physical systems. The inhomogeneous microstructure of such materials makes it very difficult to model them with continuum methods, which typically assume homogeneity on the microscale and scale separation between the constituents and the macroscopic fields. As an alternative, discrete particle methods can be applied, since they intrinsically take the micro-structure into account. The ultimate challenge is to bridge the gap between both approaches by using particlesimulations to obtain appropriate constitutive relations for continuum theories, and work with those on the macro-scale. Here, soft and hard particle simulation methods are introduced as well as the micro-macro transition to obtain the continuum fields from the particle data. Two application examples discussed in detail concern the flow of particle down an incline, as relevant for geo-flows, as well as a vibrated granular system as relevant for highly agitated transport or conveying processes.

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Luding S, Rivas Abud N, Weinhart T. From soft and hard particle simulations to continuum theory for granular flows. In Luding S, Combe G, Taghizadeh K, editors, ALERT Doctoral School 2017: Discrete Element Modeling. 2017. p. 3-42