Vane rheology of cohesionless glass beads

R. C. Daniel, A. P. Poloski, Avelino E Saez

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The rheology of a single coarse granular powder has been studied with shear vane rotational viscometry. The torque required to maintain constant rotation of a vane tool in a loose bed of glass beads (with a mean particle size of 203 μm) is measured as a function of vane immersion depth and rotational speed. The resulting torque profiles exhibit both Coulombic behavior at low rotational rates and fluid-like, collisional behavior at high rotational rates. Analyzing vane shaft and end effects allows the flow dynamics at the cylindrical and top and bottom disk surfaces of vane rotation to be determined. Disk surfaces show a uniform torque profile consistent with Coulombic friction over most of the rotational rates studied. In contrast, cylindrical surfaces show both frictional and collisional torque contributions, with significant dynamic torque increases at deep immersion depths and fast vane rotation.

Original languageEnglish (US)
Pages (from-to)237-248
Number of pages12
JournalPowder Technology
Volume181
Issue number3
DOIs
StatePublished - Feb 12 2008

Fingerprint

vanes
Rheology
rheology
beads
Torque
torque
Glass
glass
submerging
Viscosity measurement
viscometry
Powders
profiles
Particle size
beds
Friction
friction
Fluids
shear
fluids

Keywords

  • Cohesionless powders
  • Friction
  • Granular rheology
  • Shear vane

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry

Cite this

Vane rheology of cohesionless glass beads. / Daniel, R. C.; Poloski, A. P.; Saez, Avelino E.

In: Powder Technology, Vol. 181, No. 3, 12.02.2008, p. 237-248.

Research output: Contribution to journalArticle

Daniel, R. C. ; Poloski, A. P. ; Saez, Avelino E. / Vane rheology of cohesionless glass beads. In: Powder Technology. 2008 ; Vol. 181, No. 3. pp. 237-248.
@article{f8518c0f6d5147b8a04f73d28cd9a3c6,
title = "Vane rheology of cohesionless glass beads",
abstract = "The rheology of a single coarse granular powder has been studied with shear vane rotational viscometry. The torque required to maintain constant rotation of a vane tool in a loose bed of glass beads (with a mean particle size of 203 μm) is measured as a function of vane immersion depth and rotational speed. The resulting torque profiles exhibit both Coulombic behavior at low rotational rates and fluid-like, collisional behavior at high rotational rates. Analyzing vane shaft and end effects allows the flow dynamics at the cylindrical and top and bottom disk surfaces of vane rotation to be determined. Disk surfaces show a uniform torque profile consistent with Coulombic friction over most of the rotational rates studied. In contrast, cylindrical surfaces show both frictional and collisional torque contributions, with significant dynamic torque increases at deep immersion depths and fast vane rotation.",
keywords = "Cohesionless powders, Friction, Granular rheology, Shear vane",
author = "Daniel, {R. C.} and Poloski, {A. P.} and Saez, {Avelino E}",
year = "2008",
month = "2",
day = "12",
doi = "10.1016/j.powtec.2007.05.003",
language = "English (US)",
volume = "181",
pages = "237--248",
journal = "Powder Technology",
issn = "0032-5910",
publisher = "Elsevier",
number = "3",

}

TY - JOUR

T1 - Vane rheology of cohesionless glass beads

AU - Daniel, R. C.

AU - Poloski, A. P.

AU - Saez, Avelino E

PY - 2008/2/12

Y1 - 2008/2/12

N2 - The rheology of a single coarse granular powder has been studied with shear vane rotational viscometry. The torque required to maintain constant rotation of a vane tool in a loose bed of glass beads (with a mean particle size of 203 μm) is measured as a function of vane immersion depth and rotational speed. The resulting torque profiles exhibit both Coulombic behavior at low rotational rates and fluid-like, collisional behavior at high rotational rates. Analyzing vane shaft and end effects allows the flow dynamics at the cylindrical and top and bottom disk surfaces of vane rotation to be determined. Disk surfaces show a uniform torque profile consistent with Coulombic friction over most of the rotational rates studied. In contrast, cylindrical surfaces show both frictional and collisional torque contributions, with significant dynamic torque increases at deep immersion depths and fast vane rotation.

AB - The rheology of a single coarse granular powder has been studied with shear vane rotational viscometry. The torque required to maintain constant rotation of a vane tool in a loose bed of glass beads (with a mean particle size of 203 μm) is measured as a function of vane immersion depth and rotational speed. The resulting torque profiles exhibit both Coulombic behavior at low rotational rates and fluid-like, collisional behavior at high rotational rates. Analyzing vane shaft and end effects allows the flow dynamics at the cylindrical and top and bottom disk surfaces of vane rotation to be determined. Disk surfaces show a uniform torque profile consistent with Coulombic friction over most of the rotational rates studied. In contrast, cylindrical surfaces show both frictional and collisional torque contributions, with significant dynamic torque increases at deep immersion depths and fast vane rotation.

KW - Cohesionless powders

KW - Friction

KW - Granular rheology

KW - Shear vane

UR - http://www.scopus.com/inward/record.url?scp=38649093377&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=38649093377&partnerID=8YFLogxK

U2 - 10.1016/j.powtec.2007.05.003

DO - 10.1016/j.powtec.2007.05.003

M3 - Article

AN - SCOPUS:38649093377

VL - 181

SP - 237

EP - 248

JO - Powder Technology

JF - Powder Technology

SN - 0032-5910

IS - 3

ER -