Evaluation of a constitutive equation for magnetorheological fluids in shear and elongational flows

Constantin Ciocanel, Glenn Lipscomb, Nagi G. Naganathan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A microstructural model of the motion of particle pairs in MR fluids is proposed that accounts for both hydrodynamic and magnetic field forces. A fluid constitutive equation is derived from the model that allows prediction of velocity and particle structure fields. Results for simple shear and elongational flows are presented for cases where particle pairs remain in close contact so they are hydrodynamically equivalent to an ellipsoid of aspect ratio two. Additionally, only the magnetic force component normal to the vector connecting the centers of a particle pair affects motion. Shear flow results indicate particle pairs rotate continuously with the flow at low magnetic fields while a steady state is reached at high fields. For elongational flows, when the applied magnetic field is parallel to the elongation direction, particle pairs orient in the field/flow direction. Either orientation is possible when the field is perpendicular to the flow.

Original languageEnglish (US)
Title of host publicationAmerican Society of Mechanical Engineers, Aerospace Division (Publication) AD
Pages101-109
Number of pages9
Volume70 AD
DOIs
StatePublished - 2005
Externally publishedYes
Event2005 ASME International Mechanical Engineering Congress and Exposition, IMECE 2005 - Orlando, FL, United States
Duration: Nov 5 2005Nov 11 2005

Other

Other2005 ASME International Mechanical Engineering Congress and Exposition, IMECE 2005
CountryUnited States
CityOrlando, FL
Period11/5/0511/11/05

Fingerprint

Magnetorheological fluids
magnetorheological fluids
constitutive equation
constitutive equations
Constitutive equations
shear flow
Magnetic fields
fluid
evaluation
Fluids
Shear flow
magnetic field
Aspect ratio
Elongation
Flow fields
Hydrodynamics
magnetic fields
fluids
ellipsoids
flow field

Keywords

  • Constitutive equations
  • Magnetorheological fluids
  • Particle suspensions

ASJC Scopus subject areas

  • Mechanical Engineering
  • Space and Planetary Science

Cite this

Ciocanel, C., Lipscomb, G., & Naganathan, N. G. (2005). Evaluation of a constitutive equation for magnetorheological fluids in shear and elongational flows. In American Society of Mechanical Engineers, Aerospace Division (Publication) AD (Vol. 70 AD, pp. 101-109) https://doi.org/10.1115/IMECE2005-79974

Evaluation of a constitutive equation for magnetorheological fluids in shear and elongational flows. / Ciocanel, Constantin; Lipscomb, Glenn; Naganathan, Nagi G.

American Society of Mechanical Engineers, Aerospace Division (Publication) AD. Vol. 70 AD 2005. p. 101-109.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ciocanel, C, Lipscomb, G & Naganathan, NG 2005, Evaluation of a constitutive equation for magnetorheological fluids in shear and elongational flows. in American Society of Mechanical Engineers, Aerospace Division (Publication) AD. vol. 70 AD, pp. 101-109, 2005 ASME International Mechanical Engineering Congress and Exposition, IMECE 2005, Orlando, FL, United States, 11/5/05. https://doi.org/10.1115/IMECE2005-79974
Ciocanel C, Lipscomb G, Naganathan NG. Evaluation of a constitutive equation for magnetorheological fluids in shear and elongational flows. In American Society of Mechanical Engineers, Aerospace Division (Publication) AD. Vol. 70 AD. 2005. p. 101-109 https://doi.org/10.1115/IMECE2005-79974
Ciocanel, Constantin ; Lipscomb, Glenn ; Naganathan, Nagi G. / Evaluation of a constitutive equation for magnetorheological fluids in shear and elongational flows. American Society of Mechanical Engineers, Aerospace Division (Publication) AD. Vol. 70 AD 2005. pp. 101-109
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