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Shear Rate Dependence of Thermal Conductivity and Its Effect on Heat Transfer in a Non-Newtonian Flow System
Korean Journal of Chemical Engineering, May 1998, 15(3), 252-261(10), 10.1007/BF02707080
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Abstract
The purpose of this research was to investigate the extent to which the thermal conductivity of non-Newtonian fluids is affected by fluid motion, and then the effect of this shear-rate-dependent thermal conductivity, measured in Lee [1995], on the heat transfer for a typical convective system. Such information would have important implications in the design and analysis of non-Newtonian thermal systems such as are found in food processing operations, polymer processing, paint manufacturing, biological systems and many others. A simple parallel plate flow model with temperature-independent properties gave increases in heat transfer on the order of 30-80% compared to the heat transfer with shear-rate-independent thermal conductivity in Newtonian fluid flow over the entire temperature range (20-50℃) of CMC solutions depending on the inlet average velocity due to the effect of the shear-rate-dependent thermal conductivity.
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References
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Chitrangad B, Picot JJC, Polym. Eng. Sci., 21, 782 (1981)
Cocci AA, Picot JJC, Polym. Eng. Sci., 13, 337 (1973)
Eckert ERG, Drake R, "Analysis of Heat and Mass Transfer," McGraw-Hill, New York, p. 541 (1972)
Haar L, Gallagher JS, Kell GS, "NBS/NRC Steam Tables: Thermodynamic and Transport Properties and Computer Programs for Vapor and Liquid States of Water in SI Units," McGraw-Hill, New York (1984)
Irvine TF, Karni J, "Handbook of Single Phase Convection Heat Transfer, in S. Kakac, R.K. Shah and W. Aung (ed.), Non-Newtonian Fluid Flow and Heat Transfer," Chap. 20, Wiley, New York (1987)
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Lee DL, "Thermal Conductivity Measurements of Non-Newtonian Fluids in a Shear Field," Ph.D. Thesis (Dissertation Adviser: Thomas F. Irvine, Jr.), Mech. Eng. Dept., State Univ. of New York at Stony Brook (1995)
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Park NA, "Measurement of Rheological Properties of Non-Newtonian Fluids with Falling Needle Viscometer," Ph.D. Thesis, Mech. Eng. Dept., State Univ. of New York, Stony Brook (1984)
Park NA, Cho YI, Irvine TF, J. Non-Newton. Fluid Mech., 34, 351 (1990)
Park NA, Irvine TF, Rev. Sci. Insts., 59, 9 (1988)
Sinevic V, Kuboi R, Nienow AW, Chem. Eng. Sci., 41, 2915 (1986)
Taylor GI, Phil. Trans., A223, 289 (1923)
Wallace DJ, Moreland C, Picot JJC, Polym. Eng. Sci., 25, 70 (1985)
