Multi-size particulate flow through rotating channel - Modeling and validation using three turbulence

被引：0

作者：

Raghu Engineering College, Visakhapatnam, A.P. - 531162, India ^{[1
]}

不详 ^{[2
]}

机构：

[1] Raghu Engineering College, Visakhapatnam

[2] GIW Industries Inc., Grovetown

来源：

J. Comput. Multiph. Flows | 2009年 / 2卷 / 133-160期

关键词：

Concentration-modified eddy viscosity; K - ε Turbulence model; Mixture turbulence model; Multi-size particulate flow; Rotating channel; Turbulence modification;

D O I：

10.1260/175748209789563919

中图分类号：

学科分类号：

摘要：

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 km - εm equations are solved for the mixture directly. The eddy viscosities are then computed from km and εm. 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.

引用

页码：133 / 160

页数：27

共 41 条

[1]

Barre C., Mashayek F., Taulbee D.B., Statistics in Particle Laden Plane Strain Turbulence by Direct Numerical Simulation, Int. J. Multiphase Flow, 27, pp. 347-378, (2001)

[2]

Bartosik A.S., Shook C.A., Prediction of Slurry Flow with Non-uniform Concentration Distribution - Comparison of the Performance of Four Turbulence Models, Proc. 7th Int. Conf. Numerical Methods In Laminar and Turbulent Flow, 7, pp. 277-287, (1991)

[3]

Bartosik A.S., Shook C.A., Prediction of Vertical Liquid-Solid Pipe Flow Using Measured Concentration Distribution, Part. Sci. & Tech, 13, pp. 85-104, (1995)

[4]

Chen R.C., Kadambi J.R., Experimental and Numerical Studies of Solid-Liquid Pipe Flow, Asme-fed, 189, pp. 123-135, (1994)

[5]

Davidson M.R., A Numerical Model of Liquid-Solid Flow in a Hydrocyclone with High Solids Fraction, Numerical Methods In Multiphase Flows Asme, 185, pp. 29-38, (1994)

[6]

Elghobashi S.E., Abou-Arab T.W., Two-Equation Turbulence Model for Two-Phase Flows, Phys. Fluids, 26, pp. 931-938, (1983)

[7]

Gupta P.K., Pagalthivarthi K.V., Comparison of Zero-equation and Two-equation k-ε Model in Rotating Channel Flow, Proc. 2spi_supndspii_sup Bsme-asme Int. Conf. Thermal Engineering, (2004)

[8]

Gupta P.K., Pagalthivarthi K.V., Effect of Diffusive Stress, Lift and Virtual Mass Forces on Multi-size Particulate Flow through Rotating Channel, Proc. Int. Cong. Computational Mechanics and Simulation, (2006)

[9]

Gupta P.K., Pagalthivarthi K.V., Effect of Inlet Concentration on Solid-Liquid Mixture Flow through Rotating Channel, Proc. Int. Cong. Computational Mechanics and Simulation, (2006)

[10]

Gupta P.K., Pagalthivarthi K.V., Effect of Particle Size Distribution on Multi-size Particulate Flow through Rotating Channel, Int. Conf. Fluid Mechanics and Fluid Power, (2006)

← 1 2 3 4 5 →