Numerical prediction of turbulent bubbly two-phase flow in a rotating complicated duct

Wu, Jingchun; Minemura, Kiyoshi

doi:10.1002/(sici)1097-0363(19990415)29:7<811::aid-fld818>3.0.co;2-j

Cited by 2 publications

(1 citation statement)

References 27 publications

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“…A recent finite volume-based study by Wu and Minemura (1999) employed rotation-modified k -ε model for the turbulent bubbly flow inside a rotating duct. The recent work by Gupta and Pagalthivarthi (2007a) also uses the rotation-modified k -ε model for the multi-size dense slurry flow predictions in a rotating channel.…”

Section: Introductionmentioning

confidence: 99%

Multi-Size Particulate Flow through Rotating Channel — Modeling and Validation Using Three Turbulence Models

Gupta¹,

Pagalthivarthi

2009

The Journal of Computational Multiphase Flows

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A comparison of three turbulence models in modeling and validating dense multi-size particulate flow through rotating channel is presented. All the three turbulence models incoporate a rotation modification to the production term in the turbulent kinetic energy equation. In the first model, rotation-modified k-ε equations are used to compute the eddy viscosity of pure carrier which is then modified for the presence of particles. In the other two models, rotation-modified k m-ε m equations are solved for the mixture directly. The eddy viscosities are then computed from k m and ε m. The predicted results of all three models show excellent mesh independence. The coarsest mesh satisfied the mass conservation to within 0.1%. The code based on pure carrier-phase eddy viscosity (modified for concentration) is computationally 2-3 times more efficient than the other two (mixture-based) models. The predicted results using all three turbulence models are compared against applicable experimental results in the open literature. Regression between the computed and experimental results shows excellent agreement between the two.

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Section: Introductionmentioning

confidence: 99%

Multi-Size Particulate Flow through Rotating Channel — Modeling and Validation Using Three Turbulence Models

Gupta¹,

Pagalthivarthi

2009

The Journal of Computational Multiphase Flows

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Numerical aspects of an algorithm for the Eulerian simulation of two‐phase flows

Oliveira

Issa

2003

Numerical Methods in Fluids

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SUMMARYIt is often the case that the numerical simulation of two phase ows leads to a number of di culties associated with the solution algorithms utilized. Those di culties manifest themselves as an impossibility to converge the iterative solution process, typical of the ÿnite-volume pressure-correction methods, and are particularly persistent in cases with phase segregation (complete, or almost complete, separation of one phase from the other) and with ÿne meshes. A number of e ective measures to overcome such problems are here proposed and tested, encompassing: (1) modiÿcation of the momentum equations formulation in a way that avoids singularity as volume fractions ( ) tend to zero; (2) bounding of the volume fractions during the iterative algorithm in a way that enforces the physical limits, ¿0 and 61; (3) symmetric treatment of some terms in the equations, and consistent formulation of cell-face uxes in order to prevent numerical-induced oscillations.

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Numerical prediction of turbulent bubbly two-phase flow in a rotating complicated duct

Cited by 2 publications

References 27 publications

Multi-Size Particulate Flow through Rotating Channel — Modeling and Validation Using Three Turbulence Models

Multi-Size Particulate Flow through Rotating Channel — Modeling and Validation Using Three Turbulence Models

Numerical aspects of an algorithm for the Eulerian simulation of two‐phase flows

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