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| DEPOSITION MECHANISM OF PARTICLE-LIKE CORROSION PRODUCT IN TURBULENT DUCT |
| YAO Jun1, 2), Michael Fairweather2), LI Ning1) |
1) School of Energy Research, Xiamen University, Xiamen 361005
2) School of Process, Environmental and Materials Engineering, University of Leeds, Leeds LS2 9JT, UK |
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Cite this article:
YAO Jun Michael Fairweather LI Ning. DEPOSITION MECHANISM OF PARTICLE-LIKE CORROSION PRODUCT IN TURBULENT DUCT. Acta Metall Sin, 2011, 47(7): 804-808.
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Abstract The deposition of corrosion products (particles) in cooling circuits of water-cooled nuclear reactors has been investigated using large eddy simulation and Lagrangian method (Reynolds number 2.5×105). A particle equation of motion including Stokes drag, lift, buoyancy and gravitational forces is used for particle trajectory analysis. The fluid-particle effect is considered and the particle-particle interact is ignored in this work. Results obtained from the fluid field calculation showed good agreement with experimental data and the predictions of direct numerical simulations. The particle size, drag force, shear-induced lift force and gravity all affected the particle deposition process. The small sized particles tended to deposite near the duct center while large sized particles tended to deposite near the duct edge, which become more obvious with increasing particle size. Close to the bottom of the duct, the particle number density increased with particle size increasing, and a high concentration of large particles appeared in the region with flow velocities lower than the mean, while small particles distribute evenly throughout the flow.
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Received: 23 May 2011
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| Fund: Supported by Science and Technology Planning Project of Fujian Province (No.2007H2002) and EPSRC(No.EP/C549465/1) |
| [1] Comley G C W. Prog Nucl Energy, 1985; 16: 41[2] Murray A P. Nucl Technol, 1986; 74: 324[3] Hirschberg G, Baradlai P, Varga K, Myburg G, Schunk J, Tilky P, Stoddart P. J Nucl Mater, 1999; 265: 273[4] Aizawa M, Chiba Y, Hosokawa H, Ohsumi K, Uchida S,Ishizawa N. J Nucl Sci Technol, 2002; 39: 1041[5] Lin C C. Prog Nucl Energy, 2009; 51: 207[6] Germano M. J Fluid Mech, 1992; 238: 325[7] Piomelli U, Liu J. Phys Fluids, 1995; 7: 839[8] di Mare F, Jones W P. Int J Heat Fluid Flow, 2003; 24: 606[9] Rhie C M, Chow W L. AIAA J, 1983; 21: 525[10] Choi H, Moin P. J Comput Phys, 1994; 13: 1[11] Yao J, Zhao Y L, Hu G L, Fan J R, Cen K F. Aerosol Sci Technol, 2009; 43: 174[12] Saffman P G. J Fluid Mech, 1965; 22: 385[13] Saffman P G. J Fluid Mech, 1968; 31: 624[14] Mei P. Int J Multiphas Flow, 1992; 18: 145[15] Yao J, Zhang Y, Wang C H, Matsusaka S, Masuda H. Ind Eng Chem Res, 2004; 43: 7181[16] Yao J, Zhang Y, Wang C H, Liang C Y. AIChE J, 2006; 52: 3775[17] Armenio V, Fiorotto V. Phys Fluids, 2001; 13: 2437[18] Gessner F B, Emery A F. J Fluid Eng, 1981; 103: 445[19] Gessner F B, Po J K, Emery A F. In: Durst F, Launder B E, Schmidt F W, eds., Measurements of Developing Turbulent Flow in a Square Duct. Berlin: Springer Verlag, 1979: 279[20] Pan Y, Banerjee S. Phys Fluids, 1996; 8: 2733[21] Pedinotti S, Mariotti G, Banerjee S. Int J Multiphas Flow, 1992; 18: 927[22] Eaton J K, Fessler J R. Int J Multiphas Flow, 1994; 20: 169[23] Zhang H F, Ahmadi G. J Fluid Mech, 2000; 406: 55 |
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