Relating Mason number to Bingham number in magnetorheological fluids

Sherman, Stephen G.; Becnel, Andrew C.; Wereley, Norman M.

doi:10.1016/j.jmmm.2014.11.010

Cited by 67 publications

(51 citation statements)

References 38 publications

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“…It is shown by reports that pl  would ultimately be equal to   , especially at high shear limits [51,52]. The non-dimensionalized form of the eqn.…”

Section: Magnetorheologymentioning

confidence: 98%

Elemental substitution tuned magneto-elastoviscous behavior of nanoscale ferrite MFe2O4 (M = Mn, Fe, Co, Ni) based complex fluids

Chattopadhyay

Samanta

Srivastava

et al. 2019

Journal of Magnetism and Magnetic Materials

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The present article reports the governing influence of substituting the M 2+ site in nanoscale MFe 2 O 4 spinel ferrites by different magnetic metals (Fe/Mn/Co/Ni) on magnetorheological and magneto-elastoviscous behaviors of the corresponding magnetorheological fluids (MRFs). Different doped MFe 2 O 4 nanoparticles have been synthesized using the polyol-assisted hydrothermal method. Detailed steady and oscillatory shear rheology have been performed on the MRFs to determine the magneto-viscoelastic responses The MRFs exhibit shear thinning behavior and augmented yield characteristics under influence of magnetic field. The steady state magnetoviscous behaviors are scaled against the governing Mason number and self-similar response from all the MRFs have been noted. The MRFs conform to an extended Bingham plastic model under field effect. Transient magnetoviscous responses show distinct hysteresis behaviors when the MRFs are exposed to time varying magnetic fields. Oscillatory shear studies using frequency and strain amplitude sweeps exhibit predominant solid like behaviors under field environment. However, the relaxation behaviors and strain amplitude sweep tests of the MRFs reveal that while the fluids show solid-like behaviors under field effect, they cannot be termed as typical elastic fluids. Comparisons show that the MnFe 2 O 4 MRFs have superior yield performance among all. However, in case of dynamic and oscillatory systems, CoFe 2 O 4 MRFs show the best performance. The viscoelastic responses of the MRFs are noted to correspond to a three element viscoelastic model. The study may find importance in design and development strategies of nano-MRFs for different applications. The supplementary material document contains additional information, data, tables and plots of the complex fluid characterization, rheological behavior and additional data on the magnetoelastoviscous response of the fluids.

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“…It is shown by reports that pl  would ultimately be equal to   , especially at high shear limits [51,52]. The non-dimensionalized form of the eqn.…”

Section: Magnetorheologymentioning

confidence: 98%

Elemental substitution tuned magneto-elastoviscous behavior of nanoscale ferrite MFe2O4 (M = Mn, Fe, Co, Ni) based complex fluids

Chattopadhyay

Samanta

Srivastava

et al. 2019

Journal of Magnetism and Magnetic Materials

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“…Ma=F H /F M . [10][11][12][13] The shear stress (τ) vs. shear rate plots (Fig. 2 (right)) at various applied magnetic field are as per predictions of HerschelBulkley (HB) model for non-Newtonian flow of fluids.…”

Section: Results Andmentioning

confidence: 73%

Magneto-viscosity of hydrothermal synthesized Cu-Zn ferrite ferrofluids

2017

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The paraffin based ferrofluids were synthesized using the oleic acid coated Cu-Zn ferrite (CZF) nanoparticles of compositions Cu0.6Zn0.4Fe2O4 (CZF1) and Cu0.4Zn0.6Fe2O4 (CZF2) synthesized by hydrothermal process. The transmission electron micrographs (TEM) show the cubic shape particles of 4 to 10 nm and 4 to 18 nm size for CZF1 and CZF2 respectively. The nanoparticles show superparamagnetic behaviour. The viscosity increases with increase in magnetic field due to the formation of long chains of magnetic nanoparticles in ferrofluid. At higher flow rate, the magnetic chains break into smaller units and arrange along the flow direction. The flow curves show power law behavior. The size of magnetic nanoparticles influences the magneto-viscosity of the ferrofluids.

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“…剪切模式下, 磁性液体处于平面Couette流动状态, 如图1(a)所示 [13] , 重点关注上下平板的剪应力τ → [21] . 如果磁性液体在屈服之后表现出剪切变稀或剪切增稠现象 , 可用 Herschel-Bulkley模型来描述 [22] : 提出了Bingham模型 [23,24] :…”

Section: 剪切模式下的力学模型unclassified

Recent progress on the simulation technology of magnetic fluid

Pei¹,

Gong²,

Xuan³

2019

Chin. Sci. Bull.

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Relating Mason number to Bingham number in magnetorheological fluids

Cited by 67 publications

References 38 publications

Elemental substitution tuned magneto-elastoviscous behavior of nanoscale ferrite MFe2O4 (M = Mn, Fe, Co, Ni) based complex fluids

Elemental substitution tuned magneto-elastoviscous behavior of nanoscale ferrite MFe2O4 (M = Mn, Fe, Co, Ni) based complex fluids

Magneto-viscosity of hydrothermal synthesized Cu-Zn ferrite ferrofluids

Recent progress on the simulation technology of magnetic fluid

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Relating Mason number to Bingham number in magnetorheological fluids

Cited by 67 publications

References 38 publications

Elemental substitution tuned magneto-elastoviscous behavior of nanoscale ferrite MFe2O4 (M = Mn, Fe, Co, Ni) based complex fluids

Elemental substitution tuned magneto-elastoviscous behavior of nanoscale ferrite MFe2O4 (M = Mn, Fe, Co, Ni) based complex fluids

Magneto-viscosity of hydrothermal synthesized Cu-Zn ferrite ferrofluids

Recent progress on the simulation technology of magnetic fluid

Contact Info

Product

Resources

About

Elemental substitution tuned magneto-elastoviscous behavior of nanoscale ferrite MFe2O4 (M = Mn, Fe, Co, Ni) based complex fluids

Elemental substitution tuned magneto-elastoviscous behavior of nanoscale ferrite MFe2O4 (M = Mn, Fe, Co, Ni) based complex fluids