Effect of vibration on the rheology of granular materials in the quasi-static regime

Riccardo Maione; Lyes Ait Ali Yahia; Ali Ozel; Naima Gaudel; Sebastien  Kiesgien de Richter; Raffaella Ocone

Effect of vibration on the rheology of granular materials in the quasi-static regime

Riccardo Maione, Lyes Ait Ali Yahia, Ali Ozel, Naima Gaudel, Sebastien Kiesgien de Richter, Raffaella Ocone

Research output: Contribution to conference › Abstract › peer-review

Abstract

We investigate the rheology of granular materials through Discrete Element Model (DEM) simulations of frictional and non- cohesive particles under homogeneous simple shear in the quasi-static regime with and without vibration. In agreement with previous studies, the simulation results for flow configuration without vibration reveal that apparent viscosity is a function of the shear rate with a power law and its exponent is equal -1. For vibrating system, there are two distinct regimes; for high shear rates, there is no effect of vibration on viscosity that follows the power law with an exponent -1 and for low shear rates, the dependence of viscosity on the shear rate is less pronounced and the power law exponent is -0.8.

Original language	English
Publication status	Published - 19 May 2019
Event	10th International Conference on Multiphase Flow 2019 - Rio de Janeiro, Brazil Duration: 19 May 2019 → 24 May 2019 https://www.ercoftac.org/events/10th_international_conference_on_multiphase_flow/

Conference

Conference	10th International Conference on Multiphase Flow 2019
Abbreviated title	ICMF 2019
Country/Territory	Brazil
City	Rio de Janeiro
Period	19/05/19 → 24/05/19
Internet address	https://www.ercoftac.org/events/10th_international_conference_on_multiphase_flow/

Keywords

rheology
vibration
DEM
quasi-static regime

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title = "Effect of vibration on the rheology of granular materials in the quasi-static regime",

abstract = "We investigate the rheology of granular materials through Discrete Element Model (DEM) simulations of frictional and non- cohesive particles under homogeneous simple shear in the quasi-static regime with and without vibration. In agreement with previous studies, the simulation results for flow configuration without vibration reveal that apparent viscosity is a function of the shear rate with a power law and its exponent is equal -1. For vibrating system, there are two distinct regimes; for high shear rates, there is no effect of vibration on viscosity that follows the power law with an exponent -1 and for low shear rates, the dependence of viscosity on the shear rate is less pronounced and the power law exponent is -0.8.",

keywords = "rheology, vibration, DEM, quasi-static regime",

author = "Riccardo Maione and {Ait Ali Yahia}, Lyes and Ali Ozel and Naima Gaudel and {Kiesgien de Richter}, Sebastien and Raffaella Ocone",

year = "2019",

month = may,

day = "19",

language = "English",

note = "10th International Conference on Multiphase Flow 2019, ICMF 2019 ; Conference date: 19-05-2019 Through 24-05-2019",

url = "https://www.ercoftac.org/events/10th_international_conference_on_multiphase_flow/",

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TY - CONF

T1 - Effect of vibration on the rheology of granular materials in the quasi-static regime

AU - Maione, Riccardo

AU - Ait Ali Yahia, Lyes

AU - Ozel, Ali

AU - Gaudel, Naima

AU - Kiesgien de Richter, Sebastien

AU - Ocone, Raffaella

PY - 2019/5/19

Y1 - 2019/5/19

N2 - We investigate the rheology of granular materials through Discrete Element Model (DEM) simulations of frictional and non- cohesive particles under homogeneous simple shear in the quasi-static regime with and without vibration. In agreement with previous studies, the simulation results for flow configuration without vibration reveal that apparent viscosity is a function of the shear rate with a power law and its exponent is equal -1. For vibrating system, there are two distinct regimes; for high shear rates, there is no effect of vibration on viscosity that follows the power law with an exponent -1 and for low shear rates, the dependence of viscosity on the shear rate is less pronounced and the power law exponent is -0.8.

AB - We investigate the rheology of granular materials through Discrete Element Model (DEM) simulations of frictional and non- cohesive particles under homogeneous simple shear in the quasi-static regime with and without vibration. In agreement with previous studies, the simulation results for flow configuration without vibration reveal that apparent viscosity is a function of the shear rate with a power law and its exponent is equal -1. For vibrating system, there are two distinct regimes; for high shear rates, there is no effect of vibration on viscosity that follows the power law with an exponent -1 and for low shear rates, the dependence of viscosity on the shear rate is less pronounced and the power law exponent is -0.8.

KW - rheology

KW - vibration

KW - DEM

KW - quasi-static regime

M3 - Abstract

T2 - 10th International Conference on Multiphase Flow 2019

Y2 - 19 May 2019 through 24 May 2019

ER -

Effect of vibration on the rheology of granular materials in the quasi-static regime

Abstract

Conference

Keywords

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