Flow of a Bingham-like fluid in a finite channel of varying width: A two-scale approach

Fusi, Lorenzo; Farína, Angiolo; Rosso, Fábio

doi:10.1016/j.jnnfm.2012.04.007

Cited by 21 publications

(24 citation statements)

References 20 publications

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“…The first and the second of Eqs. (19) can then be integrated over z to obtain the following relations: Relations (20) show that the viscous stress τ m is linear with respect to the z-coordinate in a pressure-driven channel flow. The coordinate z y < w/2, where the equality of the yield stress τ y with the viscous stress τ m is satisfied, determines the plastic region |z| < z y , where the fluid moves as a solid body (e i j = 0): z y = Bn τ y /|∇p|.…”

Section: Lubrication Approximationmentioning

confidence: 99%

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Displacement of yield-stress fluids in a fracture

Боронин

Осипцов

Desroches

2015

International Journal of Multiphase Flow

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Section: Lubrication Approximationmentioning

confidence: 99%

“…In application to fracturing flows, the solution obtained in [18] describes the flow pattern in the horizontal section of a vertical fracture. In [20], the lubrication approximation was used to develop a generalized model for the 2D channel flow of a Bingham-like medium, which behaves as a linear elastic solid below the yield threshold.…”

Section: Introductionmentioning

confidence: 99%

Displacement of yield-stress fluids in a fracture

Боронин

Осипцов

Desroches

2015

International Journal of Multiphase Flow

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“…The use of tailings for cemented filling can efficiently utilize all mine tailings, and reduce environmental pollution and cost of filling the mine [1]. The tailings are not required to be graded, so the filling will have good conveying performance and high filling efficiency [2,3]. However, at low solids concentration high bleed water seepage rate will occur when the self-flowing tailings filling slurry is deposited underground [4].…”

Section: Introductionmentioning

confidence: 99%

Bleeding Characteristics and Improving Mechanism of Self-Flowing Tailings Filling Slurry with Low Concentration

Liu

et al. 2017

Minerals

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Abstract:In order to solve the bleeding problem of self-flowing tailings filling slurry with low concentration, the influences of the dosage of special additive on the bleeding rate were investigated. The improving mechanism of special additive on the bleeding of tailings filling slurry was studied by measuring the bleeding rate and compressive strength of the slurry. Also, microstruture analysis was conducted by scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), and infrared spectroscopy (IR) of the hardened body. The results show that with the slurry concentration of 60%, the binder-to-tailings ratio of 1:6 and the special additive dosage of 10%, the filling slurry is not bleeding and the compressive strength of hardened body can increase by 43.5% at three days. A large amount of needle-like ettringite is generated in the hardened body after adding the special additive, and the structure becomes denser. The special additive can effectively improve the bleeding of the filling slurry and increase the compressive strength of the filling material at early age.

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“…The use of tailings for cemented filling can efficiently utilize all mine tailings and reduce environmental pollution and the cost of mine filling (Zhai et al, 2011). As grading is not required for tailings, the filling paste will have good conveying performance and high filling efficiency (Zhang et al, 2011;Fusi et al, 2012). However, at low solids concentration, high bleed water seepage rates will occur when the self-flowing tailings filling paste is deposited underground (Yong et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Bleeding characteristics and improved mechanism of self-flowing tailings filling paste with low concentration

Liu¹,

Wu²,

Wu³

et al. 2017

Proceedings of the 20th International Seminar on Paste and Thickened Tailings

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In order to solve the bleeding problem of self-flowing tailings filling paste with low concentrations, the influences of the dosage of special additives on the bleeding rate were investigated. The improving mechanism of special additives on the bleeding of tailings filling paste was studied by measuring the bleeding rate and compressive strength of the paste and analyzing the scanning electron microscope (SEM), energy dispersive spectrometer (EDS) and infrared spectroscopy (IR) of the hardened paste. The results show that when the paste concentration is 60%, the binder-to-tailings ratio is 1:6, and the dosage of special additive is 10%, the filling paste is not bleeding and the compressive strength of the hardened paste can increase by 43.5% at 3 days. A large amount of needle-like ettringite is generated in the hardened paste after adding the special additives, and the structure becomes denser. The special additives can effectively improve the bleeding of the filling paste and increase the compressive strength of the filling material at early age.

show abstract

Flow of a Bingham-like fluid in a finite channel of varying width: A two-scale approach

Cited by 21 publications

References 20 publications

Displacement of yield-stress fluids in a fracture

Displacement of yield-stress fluids in a fracture

Bleeding Characteristics and Improving Mechanism of Self-Flowing Tailings Filling Slurry with Low Concentration

Bleeding characteristics and improved mechanism of self-flowing tailings filling paste with low concentration

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