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TECHNICAL PAPERS: Power

Large Eddy Simulation of the Anti-Erosion Characteristics of the Ribbed-Bend in Gas-Solid Flows

[+] Author and Article Information
J. R. Fan, K. Luo, X. Y. Zhang, K. C. Cen

Institute for Thermal Power Engineering and CE&EE, Zhejiang University, Hangzhou 310027, P.R. China

J. Eng. Gas Turbines Power 126(3), 672-679 (Aug 11, 2004) (8 pages) doi:10.1115/1.1760523 History: Received August 12, 2001; Revised February 08, 2004; Online August 11, 2004
Copyright © 2004 by ASME
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References

Tilly,  G. P., 1979, “Erosion Caused by Impact of Solid Particles,” Treat. Mat. Sci. Tech.,13, p. 287.
Finnie,  I., 1972, “Some Observations on the Erosion of Ductile Metals,” Wear, 19, pp. 81–90.
Humphrey,  J. A. C., 1990, “Fundamentals of Fluid Motion in Erosion by Solid Particle Impact,” Int. J. Heat Fluid Flow, 11, pp. 170–195.
Fan,  J. R., Zhou,  D. D., Zeng,  K. L., and Cen,  K. F., 1992, “Numerical and Experimental Study of Finned Tube Erosion Protection Methods,” Wear, 152, pp. 1–19.
Song,  X. Q., Lin,  J. Z., Zhao,  J. F., and Shen,  T. Y., 1996, “Research on Reducing Erosion by Adding Ribs on the Wall in Particulate Two-Phase Flows,” Wear, 193, pp. 1–7.
Yao,  J., Zhang,  B. Z., and Fan,  J. R., 2000, “An Experimental Investigation of a New Method for Protecting Bends From Erosion in Gas-Solid Flows,” Wear, 240, pp. 215–222.
Smagorinsky,  J., 1963, “General Circulation Experiments With the Primitive Equations. I. The Basic Experiment,” Mon. Weather Rev., 91(3), pp. 91–164.
Squires,  K. D., and Eaton,  J. K., 1991, “Preferential Concentration of Particles by Turbulence,” Phys. Fluids A, 3, pp. 169–1178.
Sommerfeld,  M., and Zivkovic,  G., 1992, “Recent Advances in the Numerical Simulation of Pneumatic Conveying Through Tube Systems,” Comput. Meth. Appl. Sci.,21, pp. 201–212.
Fan,  J. R., Zhang,  X. Y., Chen,  L. H., and Cen,  K. F., 1997, “New Stochastic Particle Dispersion Modeling of a Turbulent Particle-Laden Round Jet,” Chem. Eng. J., 66, pp. 207–215.
Grant,  G., and Tabakoff,  W., 1975, “Erosion Prediction in Turbomachinery Resulting From Environmental Solid Particles,” J. Aircr., 12, pp. 471–487.
Tabakoff,  W., Kotwal,  R., and Hamed,  A., 1979, “Erosion Study of Different Materials Affected by Coal Ash Particles,” Wear, 52, pp. 161–173.
Mason,  J. S., and Smith,  B. V., 1972, “The Erosion of Bends by Pneumatically Conveyed Suspension of Abrasive Particles,” Powder Technol., 6, pp. 323–335.
Finnie,  I., 1960, “Erosion of Surfaces by Solid Particles,” Wear, 3, p. 87.
Cousen, A. K., and Hutchings, I. M., 1983, Proc. 6th Int. Conf. on Erosion by Liquid and Solid Impact, No. 41.

Figures

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(a) The computational domain and rib arrangement of case C. (b) The basic grid system in y=0.01 m plane of case A.
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The velocity vector of the gas flow at 45° cross section in cases A, B, C, and D. (a) Case A. (b) Case B. (c) Case C. (d) Case D.
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The velocity vector of flow field at the bend part of y=0.01 m plane for in cases A, B, C, and D. (a) Case A. (b) Case B. (c) Case C. (d) Case D.
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All the particle trajectories in the bend parts of the four bends, respectively. (a) Case A. (b) Case B. (c) Case C. (d) Case D.
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The typical single particle trajectory in the different cases. (a) Case A. (b) Case B. (c) Case C. (d) Case D.
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Comparisons of the experimental erosion rate (Yao et al. 6) with that of the cases of A, B, C, and D at the same conditions
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Comparisons of the erosion rates of the ribs, the bend walls and the sidewalls for the cases of B, C, and D. (a) Case B. (b) Case C. (c) Case D.
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Comparisons of the normalized impact velocity distribution of particle-wall impact (computational unit time) between four cases. (a) 20–30 m/s; (b) 30–40 m/s; (c) >40 m/s.
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Comparison of particle-wall impact angle distribution between differernt cases

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