Moving‐bed solids flow in an inclined pipe leading into a fluidized bed: Part II. The solids flow properties

Chen, Te-Yu; Walawender, Walter P.; Fan, L.T.

doi:10.1002/aic.690260106

Cited by 6 publications

(2 citation statements)

References 6 publications

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“…The investigation of the rheological properties of a solid-gas suspension in a cocurrent flow made by Chen, Walavender and Fan [10] was based on the analysis of pseudo-shear diagrams. The authors found that the systems under consideration had pseudoplastic properties and that the deviation from Newtonian behaviour depended on the slip velocity of solid particles and the geometrical arrangement of the distributor of solid particles at the entrance to the equipment.…”

Section: Introductionmentioning

confidence: 99%

Rheological behaviour of two-phase flow of solid particles in a gas

1985

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The present investigation was concerned with the rheological behaviour of dilute suspensions of solid particles in a gas in a vertical cocurrent flow moving upwards. Starting from the experimentally determined dependence of the pressure drop on the concentration of solid particles and the Reynolds number of the carrier medium in the steady flow region, the rheological parameters were estimated using pseudo-shear diagrams. Air was the carrier medium and the dispersed phase was one of six fractions of polypropylene powder and five fractions of glass ballotini. The results show that the investigated two-phase systems have pseudoplastic character which becomes more pronounced with increases in concentration, equivalent diameter and density of solid particles in the flowing suspension.

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Section: Introductionmentioning

confidence: 99%

Rheological behaviour of two-phase flow of solid particles in a gas

1985

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“…The first assumption is important for calculating the turbulent characteristics #t and L, because apart from theoretical considerations, experimental work by Chen et al [12] and Lodes et al [13] have confirmed the pseudoplastic character of the flow of a suspension of solid particles in a gas.…”

Section: Theorymentioning

confidence: 94%

Distribution of eddy viscosity and mixing length in a non-Newtonian flow of a solid particle-gas suspension

Lodes

Mierka

1986

Rheol Acta

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The present work concerns the study of the radial distribution of eddy viscosity and mixing length and their dependence upon the Reynolds number and the concentration of the solid phase in a non-Newtonian flow of a suspension of solid particles in a gas. The investigated systems have a pseudoplastic character and the deviation from Newtonian behaviour increases with an increase in the concentration of the dispersed phase. Relations are presented for the eddy viscosity and mixing length in the flow of pseudoplastic fluids. From the analysis of results it follows that the mixing length and eddy viscosity increases with an increase in the Reynolds number. In contrast, an increase in the concentration of the solid phase and consequently of the pseudoplasticity causes a decrease in the investigated quantities. The radial distribution of the mixing length and the eddy viscosity is characterized by a maximum, after which the investigated quantities vary only slightly. This enables the area of the core of the turbulent flow to be defined.

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Flow of Gas-Solid Mixtures through Standpipes and Valves

Leung

Jones

1986

Multiphase Science and Technology

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Moving‐bed solids flow in an inclined pipe leading into a fluidized bed: Part II. The solids flow properties

Cited by 6 publications

References 6 publications

Rheological behaviour of two-phase flow of solid particles in a gas

Rheological behaviour of two-phase flow of solid particles in a gas

Distribution of eddy viscosity and mixing length in a non-Newtonian flow of a solid particle-gas suspension

Flow of Gas-Solid Mixtures through Standpipes and Valves

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