CFD Simulation of Dilute Gas-Solid Flow in 90oSquare Bend
T. A. Mikhail, Walid A. Aissa, S. A. Hassanein, O. Hamdy
DOI: 10.4236/epe.2011.33031   PDF    HTML     6,722 Downloads   12,353 Views   Citations


Gas-solid two-phase flow in a 90? bend has been studied numerically. The bend geometry is squared cross section of (0.15 m × 0.15 m) and has a turning radius of 1.5 times the duct's hydraulic diameter. The solid phase consists of glass spheres having mean diameter of 77 µm and the spheres are simulated with an air flowing at bulk velocity of 10 m/s. A computational fluid dynamic code (CFX-TASCflow) has been adopted for the simulation of the flow field inside the piping and for the simulation of the particle trajectories. Simulation was performed using Lagrangian particle-tracking model, taking into account one-way coupling, combined with a particle-wall collision model. Turbulence was predicted using k-ε model, wherein additional transport equations are solved to account for the combined gas-particle interactions and turbulence kinetic energy of the particle phase turbulence. The computational results are compared with the experimental data present in the literature and they were found to yield good agreement with the measured values.

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T. Mikhail, W. Aissa, S. Hassanein and O. Hamdy, "CFD Simulation of Dilute Gas-Solid Flow in 90oSquare Bend," Energy and Power Engineering, Vol. 3 No. 3, 2011, pp. 246-252. doi: 10.4236/epe.2011.33031.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] W. Yang and B. T. Kuan, “Experimental Investigation of Dilute Turbulent Particulate Flow inside a Curved 90? Bend,” Chemical Engineering Science, Vol. 61, No. 11, 2006, pp. 3593-3601. doi:10.1016/j.ces.2006.01.013
[2] B. T. Kuan, “CFD Simulation of Dilute Gas-Solid Two-Phase Flows with Different Solid Size Distributions in a Curved 90? Duct Bend,” The Australian and New Zealand Industrial and Applied Mathematics, Vol. 46, 2005, pp. C744-C763.
[3] A. Levy and D. J. Mason, “The Effect of a Bend on the Particle Cross-Section Concentration and Segregation in Pneumatic Conveying Systems,” Powder Technology, Vol. 98, No. 2, 1998, pp. 95-103. doi:10.1016/S0032-5910(97)03385-8
[4] K. Mohanarangam, Z. F. Tian and J. Y. Tu, “Numerical Simulation of Turbulent Gas—Particle Flow in a 90? Bend: Eulerian—Eulerian Approach,” Computers and Chemical Engineering, Vol. 32, No. 3, 2008, pp. 561-571. doi:10.1016/j.compchemeng.2007.04.001
[5] K. Mohanarangam, Z. F. Tian, J. Y. Tu, “Numerical Computation of Turbulent Gas-Particle Flow in a 90 Degree Bend: Comparison of Two Particle Modeling Approaches,” The Australian and New Zealand Industrial and Applied Mathematics, Vol. 48, 2007, pp. C741-C758.
[6] Y. Kliafas and M. Holt, “LDV Measurements of a Turbulent Air-Solid Two-Phase Flow in a 90? Bend,” Experiments in Fluids, Vol. 5, No. 2, 1987, pp. 73-85. doi:10.1007/BF00776177
[7] K. A. Ibrahim, M. A. El-Kadi, M. H. Hamed and S. M. El-Behery, “Gas-Solid Two-Phase Flow in 90? Bend,” Alexandria Engineering Journal, Vol. 45, No. 4, 2006, pp. 417-433.
[8] M. S. A. Bradley, “Understanding and Controlling Attrition and Wear in Pneumatic Conveying,” SHAPA Technical Paper No. 5, April 2002.
[9] Z. Tian, “Numerical Modeling of Turbulent Gas-Particle Flow and Its Applications. PhD Thesis. School of Aerospace,” PhD Thesis, RMIT University, November 2006, Melbourne.
[10] K. W. Chu and A. B. Yu, “Numerical Simulation of Complex Particle-Fluid Flows,” Powder Technology, Vol. 179, No. 3, 2008, pp. 104-114. doi:10.1016/j.powtec.2007.06.017
[11] X. Chen, B. S. McLaury and S. A, “Shirazi, Numerical and Experimental Investigation of the Relative Erosion Severity between Plugged Tees and Elbows in Dilute Gas-Solid Two-Phase Flow,” Wear, Vol. 261, No. 7-8, 2006, pp. 715-729. doi:10.1016/j.wear.2006.01.022
[12] T. Deng, A. R. Chaudhry, M Patel, I. Hutchings and M. S. A. Bradley, “Effect of Particle Concentration on Erosion Rate of Mild Steel Bends in a Pneumatic Conveyor,” Wear, Vol. 258, No. 1-4, 2005, pp. 480-487. doi:10.1016/j.wear.2004.08.001
[13] S. Dosanjh and J. A. C. Humphrey, “The Influence of Turbulence on Erosion by a Particle Laden Fluid Jet,” Wear, Vol. 102, No. 4, 1985, pp. 309-330. doi:10.1016/0043-1648(85)90175-9
[14] G. M. Faeth, “Mixing, Transport and Combustion in Sprays,” Progress in Energy and Combustion Science, Vol. 13, No. 4, 1987, pp. 293-345. doi:10.1016/0360-1285(87)90002-5
[15] AEA Technology Engineering Software Limited, Waterloo, Canada N2L 5Z4.

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