Critical state flow rules for CFD simulations of wet granular flows

R. Schwarze, A. Gladkyy, Stefan Luding

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

Abstract

First rheological investigation results of weakly wet granular media are presented. The materials have been examined experimentally and numerically in well- defined shear configurations in steady state, in the intermediate flow regime. For the experiments, a Searl-type ring shear cell with rotating inner cylinder and fixed outer cylinder is used. In the numerical particle simulation approach, a split-bottom shear cell is used. Relevant local continuum flow fields (e.g. velocity, stress, shear rates) are determined by micro-macro transition from the simulations data. After the simulations are validated by experiments, e.g. by comparison with the experimentally accessible quantities like shear-torque at the inner wheel, they can give a deeper insight into the microscopic kinematics. The granular media have considerably more “wet contacts” in the shear zone, as for example the location-plot of purely wet bridges, without mechanical contacts suggests. Finally, critical state flow rules concerning the viscosity of wet granular materials are discussed.
Original languageEnglish
Title of host publicationFundamentals and Applications PARTICLES 2013
EditorsE. Ramm E. Onate M. Bischoff, P. Wriggers
Place of PublicationSpain
PublisherCIMNE
Pages153-164
ISBN (Print)978-84-941531-8-1
Publication statusPublished - 18 Sep 2013
EventIII International Conference on Particle-Based Methods - Fundamentals and Applications, PARTICLES 2013 - Stuttgart, Germany
Duration: 18 Sep 201320 Sep 2013
Conference number: 3
http://congress.cimne.com/particles2013/frontal/default.asp

Publication series

Name
PublisherCIMNE

Conference

ConferenceIII International Conference on Particle-Based Methods - Fundamentals and Applications, PARTICLES 2013
Abbreviated titlePARTICLES
CountryGermany
CityStuttgart
Period18/09/1320/09/13
Internet address

Fingerprint

charge flow devices
shear
continuum flow
simulation
data simulation
wheels
shear stress
torque
flow distribution
plots
viscosity
rings
configurations
cells

Keywords

  • IR-89141
  • METIS-302026

Cite this

Schwarze, R., Gladkyy, A., & Luding, S. (2013). Critical state flow rules for CFD simulations of wet granular flows. In E. R. E. Onate M. Bischoff, & P. Wriggers (Eds.), Fundamentals and Applications PARTICLES 2013 (pp. 153-164). Spain: CIMNE.
Schwarze, R. ; Gladkyy, A. ; Luding, Stefan. / Critical state flow rules for CFD simulations of wet granular flows. Fundamentals and Applications PARTICLES 2013. editor / E. Ramm E. Onate M. Bischoff ; P. Wriggers. Spain : CIMNE, 2013. pp. 153-164
@inproceedings{ee3e8911a5794c508dd9a80bc1fb1531,
title = "Critical state flow rules for CFD simulations of wet granular flows",
abstract = "First rheological investigation results of weakly wet granular media are presented. The materials have been examined experimentally and numerically in well- defined shear configurations in steady state, in the intermediate flow regime. For the experiments, a Searl-type ring shear cell with rotating inner cylinder and fixed outer cylinder is used. In the numerical particle simulation approach, a split-bottom shear cell is used. Relevant local continuum flow fields (e.g. velocity, stress, shear rates) are determined by micro-macro transition from the simulations data. After the simulations are validated by experiments, e.g. by comparison with the experimentally accessible quantities like shear-torque at the inner wheel, they can give a deeper insight into the microscopic kinematics. The granular media have considerably more “wet contacts” in the shear zone, as for example the location-plot of purely wet bridges, without mechanical contacts suggests. Finally, critical state flow rules concerning the viscosity of wet granular materials are discussed.",
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Schwarze, R, Gladkyy, A & Luding, S 2013, Critical state flow rules for CFD simulations of wet granular flows. in ER E. Onate M. Bischoff & P. Wriggers (eds), Fundamentals and Applications PARTICLES 2013. CIMNE, Spain, pp. 153-164, III International Conference on Particle-Based Methods - Fundamentals and Applications, PARTICLES 2013, Stuttgart, Germany, 18/09/13.

Critical state flow rules for CFD simulations of wet granular flows. / Schwarze, R.; Gladkyy, A.; Luding, Stefan.

Fundamentals and Applications PARTICLES 2013. ed. / E. Ramm E. Onate M. Bischoff; P. Wriggers. Spain : CIMNE, 2013. p. 153-164.

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

TY - GEN

T1 - Critical state flow rules for CFD simulations of wet granular flows

AU - Schwarze, R.

AU - Gladkyy, A.

AU - Luding, Stefan

PY - 2013/9/18

Y1 - 2013/9/18

N2 - First rheological investigation results of weakly wet granular media are presented. The materials have been examined experimentally and numerically in well- defined shear configurations in steady state, in the intermediate flow regime. For the experiments, a Searl-type ring shear cell with rotating inner cylinder and fixed outer cylinder is used. In the numerical particle simulation approach, a split-bottom shear cell is used. Relevant local continuum flow fields (e.g. velocity, stress, shear rates) are determined by micro-macro transition from the simulations data. After the simulations are validated by experiments, e.g. by comparison with the experimentally accessible quantities like shear-torque at the inner wheel, they can give a deeper insight into the microscopic kinematics. The granular media have considerably more “wet contacts” in the shear zone, as for example the location-plot of purely wet bridges, without mechanical contacts suggests. Finally, critical state flow rules concerning the viscosity of wet granular materials are discussed.

AB - First rheological investigation results of weakly wet granular media are presented. The materials have been examined experimentally and numerically in well- defined shear configurations in steady state, in the intermediate flow regime. For the experiments, a Searl-type ring shear cell with rotating inner cylinder and fixed outer cylinder is used. In the numerical particle simulation approach, a split-bottom shear cell is used. Relevant local continuum flow fields (e.g. velocity, stress, shear rates) are determined by micro-macro transition from the simulations data. After the simulations are validated by experiments, e.g. by comparison with the experimentally accessible quantities like shear-torque at the inner wheel, they can give a deeper insight into the microscopic kinematics. The granular media have considerably more “wet contacts” in the shear zone, as for example the location-plot of purely wet bridges, without mechanical contacts suggests. Finally, critical state flow rules concerning the viscosity of wet granular materials are discussed.

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KW - METIS-302026

M3 - Conference contribution

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EP - 164

BT - Fundamentals and Applications PARTICLES 2013

A2 - E. Onate M. Bischoff, E. Ramm

A2 - P. Wriggers, null

PB - CIMNE

CY - Spain

ER -

Schwarze R, Gladkyy A, Luding S. Critical state flow rules for CFD simulations of wet granular flows. In E. Onate M. Bischoff ER, P. Wriggers, editors, Fundamentals and Applications PARTICLES 2013. Spain: CIMNE. 2013. p. 153-164