The determination of apparent viscosity using a wide gap, double concentric cylinder

James, P.W.; Jones, T. E. R.; Hughes, Jason

doi:10.1016/j.jnnfm.2004.07.010

Cited by 4 publications

(4 citation statements)

References 12 publications

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“…Typically in DCC the effect of the bottom and end surface of rotor geometry on the total measured torque could be ignored [18,20]. The velocity gradient on the free surface in the annular region was assumed to be zero [21]. Under these assumptions, the viscosity for the DCC geometry is given by Eq.…”

Section: Shear Stressmentioning

confidence: 99%

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Rotational rheometry of liquid metal systems: Measurement geometry selection and flow curve analysis

Malik

Jeyakumar

Hamed

et al. 2010

Journal of Non-Newtonian Fluid Mechanics

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Section: Shear Stressmentioning

confidence: 99%

“…(21) for which relates the transient structure of the liquid to the applied shear rate, characteristic time Â and material parameters˛.…”

Section: Flow Curves Of Liquid Metal Systemsmentioning

confidence: 99%

Rotational rheometry of liquid metal systems: Measurement geometry selection and flow curve analysis

Malik

Jeyakumar

Hamed

et al. 2010

Journal of Non-Newtonian Fluid Mechanics

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“…This phenomenon has been studied by a number of researchers; see Refs. [1][2][3][4][5] for some central contributions, and there is an ongoing discussion whether a true yield stress exists. Regarding the yield stress, two main hypotheses have been proposed "true" yield stress and "apparent" yield stress.…”

Section: Introductionmentioning

confidence: 99%

On the Interaction of Side-By-Side Circular Cylinders in Viscoplastic Fluids

Hamedi

Westerberg

2019

Fluids

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In this paper, the static interaction of a train of three cylinders in a Bingham fluid is studied numerically using Computational Fluid Dynamics. The variation of drag forces for the cylinders in several configurations is investigated. Positions of the particles in relation to the reference particle are recognized by the separation distance between the cylinders. A steady state field is considered, with Bingham numbers between 5 and 150. Several separation distances (d) were considered, such that 2.0D ≤ d ≤ 6.0D where D is the cylinder diameter. The Reynolds number was chosen in the range of 5 ≤ Re ≤ 40. In particular, the effect of the separation distance, Reynolds number and Bingham number on the shape and size of the unyielded regions was investigated. The functional dependence of this region and the drag coefficient is explored. The present results reveal the significant influence of the gap between the cylinders on the drag force and the shape of the unyielded regions surrounding the cylinders. It was found that there are several configurations in which the drag forces over the first and the third cylinders are almost equal depending on variation of the Bi, Re and the separation distance.

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“…Non-Darcy flow is also widespread in the fiber media and packed bed of the field of engineering, in this way, the flow of experimental observation often present a disordered state. To convert chaotic observations into definite quantitative relation, the appropriate mathematical physical model need to be established [1][2][3][4] .…”

Section: Introductionmentioning

confidence: 99%

Numerical Computation of Flow in Porous Media of Non-Newtonian Power Law Fluids

Liu¹,

Zhou²,

Hao³

et al. 2015

Proceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering

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In this article, the volume average method of fluid flow in porous media is introduced and the unit volume resistance is analysed, then the Brinkman-Forchheimer extended Darcy model is obtained. Numerical results of fluid flow in porous media are solved, numerical results show that fluid flow in porous media within the tube has obvious structural flow characteristics.Boundary layer viscous effect is limited to the vicinity of the wall surface, the results reflect the comprehensive effect of Darcy resistance, Forchheimer inertial resistance and Brinkman added resistance.Blocking effect of porous media has the velocity distribution of the tube flattened, dilatant fluid is more sensitive effect to this.

show abstract

The determination of apparent viscosity using a wide gap, double concentric cylinder

Cited by 4 publications

References 12 publications

Rotational rheometry of liquid metal systems: Measurement geometry selection and flow curve analysis

Rotational rheometry of liquid metal systems: Measurement geometry selection and flow curve analysis

On the Interaction of Side-By-Side Circular Cylinders in Viscoplastic Fluids

Numerical Computation of Flow in Porous Media of Non-Newtonian Power Law Fluids

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