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Received October 20, 2004
Accepted January 15, 2005
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Taylor Dispersion Coefficients for Longitudinal Laminar Flow in Shell-and-tube Exchangers
LG Chem Research Park, Daejeon 305-380, Korea 1Dept. of Chemical and Biological Engineering, Korea University, Seoul 136-713, Korea
khsong@korea.ac.kr
Korean Journal of Chemical Engineering, March 2005, 22(2), 184-189(6), 10.1007/BF02701482
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Abstract
The problem of determining the shell-side Taylor dispersion coefficient for a shell-and-tube configuration is examined in detail for square and hexagonal arrays of tubes for the case when the shell side flow is laminar and parallel to the tubes. A multipole expansion method is employed to determine fluid velocity and concentration field for the fluid on the shell side. The numerical results for the shell side Taylor dispersion coefficient are compared with those by a cell theory. The cell theory agrees well with the numerical results at small area fractions and gives better estimates for hexagonal arrays. Finally, we present formulas for determining Taylor dispersion coefficient for the periodic arrays._x000D_
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References
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Dill LH, Brenner H, J. Colloid Interface Sci., 85, 101 (1982)
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Koch DL, Brady JF, J. Fluid Mech., 154, 399 (1985)
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Sangani AS, Yao C, Phys. Fluids, 31, 2435 (1988)
Shapiro M, Brenner H, Chem. Eng. Sci., 41, 1417 (1986)
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Taylor GI, Proc. R. Soc. Lond. A, 219, 186 (1953)
